[1] | 1 | SUBROUTINE init_pegrid |
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| 2 | |
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| 3 | !------------------------------------------------------------------------------! |
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[254] | 4 | ! Current revisions: |
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[1] | 5 | ! ----------------- |
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[760] | 6 | ! |
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[667] | 7 | ! |
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[668] | 8 | ! Former revisions: |
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| 9 | ! ----------------- |
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| 10 | ! $Id: init_pegrid.f90 979 2012-08-09 08:50:11Z heinze $ |
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| 11 | ! |
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[979] | 12 | ! 978 2012-08-09 08:28:32Z fricke |
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| 13 | ! dirichlet/neumann and neumann/dirichlet added |
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| 14 | ! nxlu and nysv are also calculated for inflow boundary |
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| 15 | ! |
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[810] | 16 | ! 809 2012-01-30 13:32:58Z maronga |
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| 17 | ! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives |
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| 18 | ! |
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[808] | 19 | ! 807 2012-01-25 11:53:51Z maronga |
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| 20 | ! New cpp directive "__check" implemented which is used by check_namelist_files |
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| 21 | ! |
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[781] | 22 | ! 780 2011-11-10 07:16:47Z raasch |
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| 23 | ! Bugfix for rev 778: Misplaced error message moved to the rigth place |
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| 24 | ! |
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[779] | 25 | ! 778 2011-11-07 14:18:25Z fricke |
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| 26 | ! Calculation of subdomain_size now considers the number of ghost points. |
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| 27 | ! Further coarsening on PE0 is now possible for multigrid solver if the |
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| 28 | ! collected field has more grid points than the subdomain of an PE. |
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| 29 | ! |
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[760] | 30 | ! 759 2011-09-15 13:58:31Z raasch |
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| 31 | ! calculation of number of io_blocks and the io_group to which the respective |
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| 32 | ! PE belongs |
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| 33 | ! |
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[756] | 34 | ! 755 2011-08-29 09:55:16Z witha |
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| 35 | ! 2d-decomposition is default for lcflow (ForWind cluster in Oldenburg) |
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| 36 | ! |
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[723] | 37 | ! 722 2011-04-11 06:21:09Z raasch |
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| 38 | ! Bugfix: bc_lr/ns_cyc/dirrad/raddir replaced by bc_lr/ns, because variables |
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| 39 | ! are not yet set here; grid_level set to 0 |
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| 40 | ! |
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[710] | 41 | ! 709 2011-03-30 09:31:40Z raasch |
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| 42 | ! formatting adjustments |
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| 43 | ! |
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[708] | 44 | ! 707 2011-03-29 11:39:40Z raasch |
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| 45 | ! bc_lr/ns replaced by bc_lr/ns_cyc/dirrad/raddir |
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| 46 | ! |
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[668] | 47 | ! 667 2010-12-23 12:06:00Z suehring/gryschka |
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[667] | 48 | ! Moved determination of target_id's from init_coupling |
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[669] | 49 | ! Determination of parameters needed for coupling (coupling_topology, ngp_a, |
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| 50 | ! ngp_o) with different grid/processor-topology in ocean and atmosphere |
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[667] | 51 | ! Adaption of ngp_xy, ngp_y to a dynamic number of ghost points. |
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| 52 | ! The maximum_grid_level changed from 1 to 0. 0 is the normal grid, 1 to |
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| 53 | ! maximum_grid_level the grids for multigrid, in which 0 and 1 are normal grids. |
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| 54 | ! This distinction is due to reasons of data exchange and performance for the |
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| 55 | ! normal grid and grids in poismg. |
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| 56 | ! The definition of MPI-Vectors adapted to a dynamic numer of ghost points. |
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| 57 | ! New MPI-Vectors for data exchange between left and right boundaries added. |
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| 58 | ! This is due to reasons of performance (10% faster). |
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[77] | 59 | ! |
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[647] | 60 | ! 646 2010-12-15 13:03:52Z raasch |
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| 61 | ! lctit is now using a 2d decomposition by default |
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| 62 | ! |
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[623] | 63 | ! 622 2010-12-10 08:08:13Z raasch |
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| 64 | ! optional barriers included in order to speed up collective operations |
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| 65 | ! |
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[482] | 66 | ! 438 2010-02-01 04:32:43Z raasch |
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| 67 | ! 2d-decomposition is default for Cray-XT machines |
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[77] | 68 | ! |
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[392] | 69 | ! 274 2009-03-26 15:11:21Z heinze |
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| 70 | ! Output of messages replaced by message handling routine. |
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| 71 | ! |
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[226] | 72 | ! 206 2008-10-13 14:59:11Z raasch |
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| 73 | ! Implementation of a MPI-1 coupling: added __parallel within the __mpi2 part |
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| 74 | ! 2d-decomposition is default on SGI-ICE systems |
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| 75 | ! |
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[198] | 76 | ! 197 2008-09-16 15:29:03Z raasch |
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| 77 | ! multigrid levels are limited by subdomains if mg_switch_to_pe0_level = -1, |
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| 78 | ! nz is used instead nnz for calculating mg-levels |
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| 79 | ! Collect on PE0 horizontal index bounds from all other PEs, |
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| 80 | ! broadcast the id of the inflow PE (using the respective communicator) |
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| 81 | ! |
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[139] | 82 | ! 114 2007-10-10 00:03:15Z raasch |
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| 83 | ! Allocation of wall flag arrays for multigrid solver |
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| 84 | ! |
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[110] | 85 | ! 108 2007-08-24 15:10:38Z letzel |
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| 86 | ! Intercommunicator (comm_inter) and derived data type (type_xy) for |
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| 87 | ! coupled model runs created, assign coupling_mode_remote, |
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| 88 | ! indices nxlu and nysv are calculated (needed for non-cyclic boundary |
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| 89 | ! conditions) |
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| 90 | ! |
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[83] | 91 | ! 82 2007-04-16 15:40:52Z raasch |
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| 92 | ! Cpp-directive lcmuk changed to intel_openmp_bug, setting of host on lcmuk by |
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| 93 | ! cpp-directive removed |
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| 94 | ! |
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[77] | 95 | ! 75 2007-03-22 09:54:05Z raasch |
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[73] | 96 | ! uxrp, vynp eliminated, |
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[75] | 97 | ! dirichlet/neumann changed to dirichlet/radiation, etc., |
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| 98 | ! poisfft_init is only called if fft-solver is switched on |
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[1] | 99 | ! |
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[3] | 100 | ! RCS Log replace by Id keyword, revision history cleaned up |
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| 101 | ! |
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[1] | 102 | ! Revision 1.28 2006/04/26 13:23:32 raasch |
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| 103 | ! lcmuk does not understand the !$ comment so a cpp-directive is required |
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| 104 | ! |
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| 105 | ! Revision 1.1 1997/07/24 11:15:09 raasch |
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| 106 | ! Initial revision |
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| 107 | ! |
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| 108 | ! |
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| 109 | ! Description: |
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| 110 | ! ------------ |
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| 111 | ! Determination of the virtual processor topology (if not prescribed by the |
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| 112 | ! user)and computation of the grid point number and array bounds of the local |
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| 113 | ! domains. |
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| 114 | !------------------------------------------------------------------------------! |
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| 115 | |
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| 116 | USE control_parameters |
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| 117 | USE fft_xy |
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[163] | 118 | USE grid_variables |
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[1] | 119 | USE indices |
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| 120 | USE pegrid |
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| 121 | USE poisfft_mod |
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| 122 | USE poisfft_hybrid_mod |
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| 123 | USE statistics |
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| 124 | USE transpose_indices |
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| 125 | |
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| 126 | |
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[667] | 127 | |
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[1] | 128 | IMPLICIT NONE |
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| 129 | |
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[778] | 130 | INTEGER :: i, id_inflow_l, id_recycling_l, ind(5), j, k, & |
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[151] | 131 | maximum_grid_level_l, mg_switch_to_pe0_level_l, mg_levels_x, & |
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| 132 | mg_levels_y, mg_levels_z, nnx_y, nnx_z, nny_x, nny_z, nnz_x, & |
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| 133 | nnz_y, numproc_sqr, nx_total, nxl_l, nxr_l, nyn_l, nys_l, & |
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[778] | 134 | nzb_l, nzt_l, omp_get_num_threads |
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[1] | 135 | |
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| 136 | INTEGER, DIMENSION(:), ALLOCATABLE :: ind_all, nxlf, nxrf, nynf, nysf |
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| 137 | |
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[667] | 138 | INTEGER, DIMENSION(2) :: pdims_remote |
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| 139 | |
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[1] | 140 | LOGICAL :: found |
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| 141 | |
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| 142 | ! |
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| 143 | !-- Get the number of OpenMP threads |
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| 144 | !$OMP PARALLEL |
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[82] | 145 | #if defined( __intel_openmp_bug ) |
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[1] | 146 | threads_per_task = omp_get_num_threads() |
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| 147 | #else |
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| 148 | !$ threads_per_task = omp_get_num_threads() |
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| 149 | #endif |
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| 150 | !$OMP END PARALLEL |
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| 151 | |
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| 152 | |
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| 153 | #if defined( __parallel ) |
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[667] | 154 | |
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[1] | 155 | ! |
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| 156 | !-- Determine the processor topology or check it, if prescribed by the user |
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| 157 | IF ( npex == -1 .AND. npey == -1 ) THEN |
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| 158 | |
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| 159 | ! |
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| 160 | !-- Automatic determination of the topology |
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| 161 | !-- The default on SMP- and cluster-hosts is a 1d-decomposition along x |
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[206] | 162 | IF ( host(1:3) == 'ibm' .OR. host(1:3) == 'nec' .OR. & |
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[438] | 163 | ( host(1:2) == 'lc' .AND. host(3:5) /= 'sgi' .AND. & |
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[755] | 164 | host(3:4) /= 'xt' .AND. host(3:5) /= 'tit' .AND. & |
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| 165 | host(3:6) /= 'flow' ) .OR. host(1:3) == 'dec' ) THEN |
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[1] | 166 | |
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| 167 | pdims(1) = numprocs |
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| 168 | pdims(2) = 1 |
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| 169 | |
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| 170 | ELSE |
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| 171 | |
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| 172 | numproc_sqr = SQRT( REAL( numprocs ) ) |
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| 173 | pdims(1) = MAX( numproc_sqr , 1 ) |
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| 174 | DO WHILE ( MOD( numprocs , pdims(1) ) /= 0 ) |
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| 175 | pdims(1) = pdims(1) - 1 |
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| 176 | ENDDO |
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| 177 | pdims(2) = numprocs / pdims(1) |
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| 178 | |
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| 179 | ENDIF |
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| 180 | |
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| 181 | ELSEIF ( npex /= -1 .AND. npey /= -1 ) THEN |
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| 182 | |
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| 183 | ! |
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| 184 | !-- Prescribed by user. Number of processors on the prescribed topology |
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| 185 | !-- must be equal to the number of PEs available to the job |
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| 186 | IF ( ( npex * npey ) /= numprocs ) THEN |
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[274] | 187 | WRITE( message_string, * ) 'number of PEs of the prescribed ', & |
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| 188 | 'topology (', npex*npey,') does not match & the number of ', & |
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| 189 | 'PEs available to the job (', numprocs, ')' |
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[254] | 190 | CALL message( 'init_pegrid', 'PA0221', 1, 2, 0, 6, 0 ) |
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[1] | 191 | ENDIF |
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| 192 | pdims(1) = npex |
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| 193 | pdims(2) = npey |
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| 194 | |
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| 195 | ELSE |
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| 196 | ! |
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| 197 | !-- If the processor topology is prescribed by the user, the number of |
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| 198 | !-- PEs must be given in both directions |
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[274] | 199 | message_string = 'if the processor topology is prescribed by the, ' // & |
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| 200 | ' user& both values of "npex" and "npey" must be given ' // & |
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| 201 | 'in the &NAMELIST-parameter file' |
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[254] | 202 | CALL message( 'init_pegrid', 'PA0222', 1, 2, 0, 6, 0 ) |
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[1] | 203 | |
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| 204 | ENDIF |
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| 205 | |
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| 206 | ! |
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| 207 | !-- The hybrid solver can only be used in case of a 1d-decomposition along x |
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| 208 | IF ( pdims(2) /= 1 .AND. psolver == 'poisfft_hybrid' ) THEN |
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[254] | 209 | message_string = 'psolver = "poisfft_hybrid" can only be' // & |
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| 210 | '& used in case of a 1d-decomposition along x' |
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| 211 | CALL message( 'init_pegrid', 'PA0223', 1, 2, 0, 6, 0 ) |
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[1] | 212 | ENDIF |
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| 213 | |
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| 214 | ! |
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[622] | 215 | !-- For communication speedup, set barriers in front of collective |
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| 216 | !-- communications by default on SGI-type systems |
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| 217 | IF ( host(3:5) == 'sgi' ) collective_wait = .TRUE. |
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| 218 | |
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| 219 | ! |
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[1] | 220 | !-- If necessary, set horizontal boundary conditions to non-cyclic |
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[722] | 221 | IF ( bc_lr /= 'cyclic' ) cyclic(1) = .FALSE. |
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| 222 | IF ( bc_ns /= 'cyclic' ) cyclic(2) = .FALSE. |
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[1] | 223 | |
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[807] | 224 | |
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[809] | 225 | #if ! defined( __check) |
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[1] | 226 | ! |
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| 227 | !-- Create the virtual processor grid |
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| 228 | CALL MPI_CART_CREATE( comm_palm, ndim, pdims, cyclic, reorder, & |
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| 229 | comm2d, ierr ) |
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| 230 | CALL MPI_COMM_RANK( comm2d, myid, ierr ) |
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| 231 | WRITE (myid_char,'(''_'',I4.4)') myid |
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| 232 | |
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| 233 | CALL MPI_CART_COORDS( comm2d, myid, ndim, pcoord, ierr ) |
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| 234 | CALL MPI_CART_SHIFT( comm2d, 0, 1, pleft, pright, ierr ) |
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| 235 | CALL MPI_CART_SHIFT( comm2d, 1, 1, psouth, pnorth, ierr ) |
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| 236 | |
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| 237 | ! |
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| 238 | !-- Determine sub-topologies for transpositions |
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| 239 | !-- Transposition from z to x: |
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| 240 | remain_dims(1) = .TRUE. |
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| 241 | remain_dims(2) = .FALSE. |
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| 242 | CALL MPI_CART_SUB( comm2d, remain_dims, comm1dx, ierr ) |
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| 243 | CALL MPI_COMM_RANK( comm1dx, myidx, ierr ) |
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| 244 | ! |
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| 245 | !-- Transposition from x to y |
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| 246 | remain_dims(1) = .FALSE. |
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| 247 | remain_dims(2) = .TRUE. |
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| 248 | CALL MPI_CART_SUB( comm2d, remain_dims, comm1dy, ierr ) |
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| 249 | CALL MPI_COMM_RANK( comm1dy, myidy, ierr ) |
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| 250 | |
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[807] | 251 | #endif |
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[1] | 252 | |
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| 253 | ! |
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| 254 | !-- Find a grid (used for array d) which will match the transposition demands |
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| 255 | IF ( grid_matching == 'strict' ) THEN |
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| 256 | |
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| 257 | nxa = nx; nya = ny; nza = nz |
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| 258 | |
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| 259 | ELSE |
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| 260 | |
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| 261 | found = .FALSE. |
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| 262 | xn: DO nxa = nx, 2*nx |
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| 263 | ! |
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| 264 | !-- Meet conditions for nx |
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| 265 | IF ( MOD( nxa+1, pdims(1) ) /= 0 .OR. & |
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| 266 | MOD( nxa+1, pdims(2) ) /= 0 ) CYCLE xn |
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| 267 | |
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| 268 | yn: DO nya = ny, 2*ny |
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| 269 | ! |
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| 270 | !-- Meet conditions for ny |
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| 271 | IF ( MOD( nya+1, pdims(2) ) /= 0 .OR. & |
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| 272 | MOD( nya+1, pdims(1) ) /= 0 ) CYCLE yn |
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| 273 | |
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| 274 | |
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| 275 | zn: DO nza = nz, 2*nz |
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| 276 | ! |
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| 277 | !-- Meet conditions for nz |
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| 278 | IF ( ( MOD( nza, pdims(1) ) /= 0 .AND. pdims(1) /= 1 .AND. & |
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| 279 | pdims(2) /= 1 ) .OR. & |
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| 280 | ( MOD( nza, pdims(2) ) /= 0 .AND. dt_dosp /= 9999999.9 & |
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| 281 | ) ) THEN |
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| 282 | CYCLE zn |
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| 283 | ELSE |
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| 284 | found = .TRUE. |
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| 285 | EXIT xn |
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| 286 | ENDIF |
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| 287 | |
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| 288 | ENDDO zn |
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| 289 | |
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| 290 | ENDDO yn |
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| 291 | |
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| 292 | ENDDO xn |
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| 293 | |
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| 294 | IF ( .NOT. found ) THEN |
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[254] | 295 | message_string = 'no matching grid for transpositions found' |
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| 296 | CALL message( 'init_pegrid', 'PA0224', 1, 2, 0, 6, 0 ) |
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[1] | 297 | ENDIF |
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| 298 | |
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| 299 | ENDIF |
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| 300 | |
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| 301 | ! |
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| 302 | !-- Calculate array bounds in x-direction for every PE. |
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| 303 | !-- The last PE along x may get less grid points than the others |
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| 304 | ALLOCATE( nxlf(0:pdims(1)-1), nxrf(0:pdims(1)-1), nynf(0:pdims(2)-1), & |
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| 305 | nysf(0:pdims(2)-1), nnx_pe(0:pdims(1)-1), nny_pe(0:pdims(2)-1) ) |
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| 306 | |
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| 307 | IF ( MOD( nxa+1 , pdims(1) ) /= 0 ) THEN |
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[274] | 308 | WRITE( message_string, * ) 'x-direction: gridpoint number (',nx+1,') ',& |
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| 309 | 'is not an& integral divisor of the number ', & |
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| 310 | 'processors (', pdims(1),')' |
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[254] | 311 | CALL message( 'init_pegrid', 'PA0225', 1, 2, 0, 6, 0 ) |
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[1] | 312 | ELSE |
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| 313 | nnx = ( nxa + 1 ) / pdims(1) |
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| 314 | IF ( nnx*pdims(1) - ( nx + 1) > nnx ) THEN |
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[274] | 315 | WRITE( message_string, * ) 'x-direction: nx does not match the', & |
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| 316 | 'requirements given by the number of PEs &used', & |
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| 317 | '& please use nx = ', nx - ( pdims(1) - ( nnx*pdims(1) & |
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| 318 | - ( nx + 1 ) ) ), ' instead of nx =', nx |
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[254] | 319 | CALL message( 'init_pegrid', 'PA0226', 1, 2, 0, 6, 0 ) |
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[1] | 320 | ENDIF |
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| 321 | ENDIF |
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| 322 | |
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| 323 | ! |
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| 324 | !-- Left and right array bounds, number of gridpoints |
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| 325 | DO i = 0, pdims(1)-1 |
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| 326 | nxlf(i) = i * nnx |
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| 327 | nxrf(i) = ( i + 1 ) * nnx - 1 |
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| 328 | nnx_pe(i) = MIN( nx, nxrf(i) ) - nxlf(i) + 1 |
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| 329 | ENDDO |
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| 330 | |
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| 331 | ! |
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| 332 | !-- Calculate array bounds in y-direction for every PE. |
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| 333 | IF ( MOD( nya+1 , pdims(2) ) /= 0 ) THEN |
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[274] | 334 | WRITE( message_string, * ) 'y-direction: gridpoint number (',ny+1,') ', & |
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| 335 | 'is not an& integral divisor of the number of', & |
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| 336 | 'processors (', pdims(2),')' |
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[254] | 337 | CALL message( 'init_pegrid', 'PA0227', 1, 2, 0, 6, 0 ) |
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[1] | 338 | ELSE |
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| 339 | nny = ( nya + 1 ) / pdims(2) |
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| 340 | IF ( nny*pdims(2) - ( ny + 1) > nny ) THEN |
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[274] | 341 | WRITE( message_string, * ) 'y-direction: ny does not match the', & |
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| 342 | 'requirements given by the number of PEs &used ', & |
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| 343 | '& please use ny = ', ny - ( pdims(2) - ( nnx*pdims(2) & |
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[254] | 344 | - ( ny + 1 ) ) ), ' instead of ny =', ny |
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| 345 | CALL message( 'init_pegrid', 'PA0228', 1, 2, 0, 6, 0 ) |
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[1] | 346 | ENDIF |
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| 347 | ENDIF |
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| 348 | |
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| 349 | ! |
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| 350 | !-- South and north array bounds |
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| 351 | DO j = 0, pdims(2)-1 |
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| 352 | nysf(j) = j * nny |
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| 353 | nynf(j) = ( j + 1 ) * nny - 1 |
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| 354 | nny_pe(j) = MIN( ny, nynf(j) ) - nysf(j) + 1 |
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| 355 | ENDDO |
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| 356 | |
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| 357 | ! |
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| 358 | !-- Local array bounds of the respective PEs |
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| 359 | nxl = nxlf(pcoord(1)) |
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| 360 | nxra = nxrf(pcoord(1)) |
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| 361 | nxr = MIN( nx, nxra ) |
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| 362 | nys = nysf(pcoord(2)) |
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| 363 | nyna = nynf(pcoord(2)) |
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| 364 | nyn = MIN( ny, nyna ) |
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| 365 | nzb = 0 |
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| 366 | nzta = nza |
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| 367 | nzt = MIN( nz, nzta ) |
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| 368 | nnz = nza |
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| 369 | |
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| 370 | ! |
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[707] | 371 | !-- Set switches to define if the PE is situated at the border of the virtual |
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| 372 | !-- processor grid |
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| 373 | IF ( nxl == 0 ) left_border_pe = .TRUE. |
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| 374 | IF ( nxr == nx ) right_border_pe = .TRUE. |
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| 375 | IF ( nys == 0 ) south_border_pe = .TRUE. |
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| 376 | IF ( nyn == ny ) north_border_pe = .TRUE. |
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| 377 | |
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| 378 | ! |
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[1] | 379 | !-- Calculate array bounds and gridpoint numbers for the transposed arrays |
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| 380 | !-- (needed in the pressure solver) |
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| 381 | !-- For the transposed arrays, cyclic boundaries as well as top and bottom |
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| 382 | !-- boundaries are omitted, because they are obstructive to the transposition |
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| 383 | |
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| 384 | ! |
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| 385 | !-- 1. transposition z --> x |
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| 386 | !-- This transposition is not neccessary in case of a 1d-decomposition along x, |
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| 387 | !-- except that the uptream-spline method is switched on |
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| 388 | IF ( pdims(2) /= 1 .OR. momentum_advec == 'ups-scheme' .OR. & |
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| 389 | scalar_advec == 'ups-scheme' ) THEN |
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| 390 | |
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| 391 | IF ( pdims(2) == 1 .AND. ( momentum_advec == 'ups-scheme' .OR. & |
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| 392 | scalar_advec == 'ups-scheme' ) ) THEN |
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[254] | 393 | message_string = '1d-decomposition along x ' // & |
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| 394 | 'chosen but nz restrictions may occur' // & |
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| 395 | '& since ups-scheme is activated' |
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| 396 | CALL message( 'init_pegrid', 'PA0229', 0, 1, 0, 6, 0 ) |
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[1] | 397 | ENDIF |
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| 398 | nys_x = nys |
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| 399 | nyn_xa = nyna |
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| 400 | nyn_x = nyn |
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| 401 | nny_x = nny |
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| 402 | IF ( MOD( nza , pdims(1) ) /= 0 ) THEN |
---|
[274] | 403 | WRITE( message_string, * ) 'transposition z --> x:', & |
---|
| 404 | '&nz=',nz,' is not an integral divisior of pdims(1)=', & |
---|
| 405 | pdims(1) |
---|
[254] | 406 | CALL message( 'init_pegrid', 'PA0230', 1, 2, 0, 6, 0 ) |
---|
[1] | 407 | ENDIF |
---|
| 408 | nnz_x = nza / pdims(1) |
---|
| 409 | nzb_x = 1 + myidx * nnz_x |
---|
| 410 | nzt_xa = ( myidx + 1 ) * nnz_x |
---|
| 411 | nzt_x = MIN( nzt, nzt_xa ) |
---|
| 412 | |
---|
| 413 | sendrecvcount_zx = nnx * nny * nnz_x |
---|
| 414 | |
---|
[181] | 415 | ELSE |
---|
| 416 | ! |
---|
| 417 | !--- Setting of dummy values because otherwise variables are undefined in |
---|
| 418 | !--- the next step x --> y |
---|
| 419 | !--- WARNING: This case has still to be clarified!!!!!!!!!!!! |
---|
| 420 | nnz_x = 1 |
---|
| 421 | nzb_x = 1 |
---|
| 422 | nzt_xa = 1 |
---|
| 423 | nzt_x = 1 |
---|
| 424 | nny_x = nny |
---|
| 425 | |
---|
[1] | 426 | ENDIF |
---|
| 427 | |
---|
| 428 | ! |
---|
| 429 | !-- 2. transposition x --> y |
---|
| 430 | nnz_y = nnz_x |
---|
| 431 | nzb_y = nzb_x |
---|
| 432 | nzt_ya = nzt_xa |
---|
| 433 | nzt_y = nzt_x |
---|
| 434 | IF ( MOD( nxa+1 , pdims(2) ) /= 0 ) THEN |
---|
[274] | 435 | WRITE( message_string, * ) 'transposition x --> y:', & |
---|
| 436 | '&nx+1=',nx+1,' is not an integral divisor of ',& |
---|
| 437 | 'pdims(2)=',pdims(2) |
---|
[254] | 438 | CALL message( 'init_pegrid', 'PA0231', 1, 2, 0, 6, 0 ) |
---|
[1] | 439 | ENDIF |
---|
| 440 | nnx_y = (nxa+1) / pdims(2) |
---|
| 441 | nxl_y = myidy * nnx_y |
---|
| 442 | nxr_ya = ( myidy + 1 ) * nnx_y - 1 |
---|
| 443 | nxr_y = MIN( nx, nxr_ya ) |
---|
| 444 | |
---|
| 445 | sendrecvcount_xy = nnx_y * nny_x * nnz_y |
---|
| 446 | |
---|
| 447 | ! |
---|
| 448 | !-- 3. transposition y --> z (ELSE: x --> y in case of 1D-decomposition |
---|
| 449 | !-- along x) |
---|
| 450 | IF ( pdims(2) /= 1 .OR. momentum_advec == 'ups-scheme' .OR. & |
---|
| 451 | scalar_advec == 'ups-scheme' ) THEN |
---|
| 452 | ! |
---|
| 453 | !-- y --> z |
---|
| 454 | !-- This transposition is not neccessary in case of a 1d-decomposition |
---|
| 455 | !-- along x, except that the uptream-spline method is switched on |
---|
| 456 | nnx_z = nnx_y |
---|
| 457 | nxl_z = nxl_y |
---|
| 458 | nxr_za = nxr_ya |
---|
| 459 | nxr_z = nxr_y |
---|
| 460 | IF ( MOD( nya+1 , pdims(1) ) /= 0 ) THEN |
---|
[274] | 461 | WRITE( message_string, * ) 'transposition y --> z:', & |
---|
| 462 | '& ny+1=',ny+1,' is not an integral divisor of ',& |
---|
| 463 | 'pdims(1)=',pdims(1) |
---|
[254] | 464 | CALL message( 'init_pegrid', 'PA0232', 1, 2, 0, 6, 0 ) |
---|
[1] | 465 | ENDIF |
---|
| 466 | nny_z = (nya+1) / pdims(1) |
---|
| 467 | nys_z = myidx * nny_z |
---|
| 468 | nyn_za = ( myidx + 1 ) * nny_z - 1 |
---|
| 469 | nyn_z = MIN( ny, nyn_za ) |
---|
| 470 | |
---|
| 471 | sendrecvcount_yz = nnx_y * nny_z * nnz_y |
---|
| 472 | |
---|
| 473 | ELSE |
---|
| 474 | ! |
---|
| 475 | !-- x --> y. This condition must be fulfilled for a 1D-decomposition along x |
---|
| 476 | IF ( MOD( nya+1 , pdims(1) ) /= 0 ) THEN |
---|
[274] | 477 | WRITE( message_string, * ) 'transposition x --> y:', & |
---|
| 478 | '& ny+1=',ny+1,' is not an integral divisor of ',& |
---|
| 479 | 'pdims(1)=',pdims(1) |
---|
[254] | 480 | CALL message( 'init_pegrid', 'PA0233', 1, 2, 0, 6, 0 ) |
---|
[1] | 481 | ENDIF |
---|
| 482 | |
---|
| 483 | ENDIF |
---|
| 484 | |
---|
| 485 | ! |
---|
| 486 | !-- Indices for direct transpositions z --> y (used for calculating spectra) |
---|
| 487 | IF ( dt_dosp /= 9999999.9 ) THEN |
---|
| 488 | IF ( MOD( nza, pdims(2) ) /= 0 ) THEN |
---|
[274] | 489 | WRITE( message_string, * ) 'direct transposition z --> y (needed ', & |
---|
| 490 | 'for spectra):& nz=',nz,' is not an integral divisor of ',& |
---|
| 491 | 'pdims(2)=',pdims(2) |
---|
[254] | 492 | CALL message( 'init_pegrid', 'PA0234', 1, 2, 0, 6, 0 ) |
---|
[1] | 493 | ELSE |
---|
| 494 | nxl_yd = nxl |
---|
| 495 | nxr_yda = nxra |
---|
| 496 | nxr_yd = nxr |
---|
| 497 | nzb_yd = 1 + myidy * ( nza / pdims(2) ) |
---|
| 498 | nzt_yda = ( myidy + 1 ) * ( nza / pdims(2) ) |
---|
| 499 | nzt_yd = MIN( nzt, nzt_yda ) |
---|
| 500 | |
---|
| 501 | sendrecvcount_zyd = nnx * nny * ( nza / pdims(2) ) |
---|
| 502 | ENDIF |
---|
| 503 | ENDIF |
---|
| 504 | |
---|
| 505 | ! |
---|
| 506 | !-- Indices for direct transpositions y --> x (they are only possible in case |
---|
| 507 | !-- of a 1d-decomposition along x) |
---|
| 508 | IF ( pdims(2) == 1 ) THEN |
---|
| 509 | nny_x = nny / pdims(1) |
---|
| 510 | nys_x = myid * nny_x |
---|
| 511 | nyn_xa = ( myid + 1 ) * nny_x - 1 |
---|
| 512 | nyn_x = MIN( ny, nyn_xa ) |
---|
| 513 | nzb_x = 1 |
---|
| 514 | nzt_xa = nza |
---|
| 515 | nzt_x = nz |
---|
| 516 | sendrecvcount_xy = nnx * nny_x * nza |
---|
| 517 | ENDIF |
---|
| 518 | |
---|
| 519 | ! |
---|
| 520 | !-- Indices for direct transpositions x --> y (they are only possible in case |
---|
| 521 | !-- of a 1d-decomposition along y) |
---|
| 522 | IF ( pdims(1) == 1 ) THEN |
---|
| 523 | nnx_y = nnx / pdims(2) |
---|
| 524 | nxl_y = myid * nnx_y |
---|
| 525 | nxr_ya = ( myid + 1 ) * nnx_y - 1 |
---|
| 526 | nxr_y = MIN( nx, nxr_ya ) |
---|
| 527 | nzb_y = 1 |
---|
| 528 | nzt_ya = nza |
---|
| 529 | nzt_y = nz |
---|
| 530 | sendrecvcount_xy = nnx_y * nny * nza |
---|
| 531 | ENDIF |
---|
| 532 | |
---|
| 533 | ! |
---|
| 534 | !-- Arrays for storing the array bounds are needed any more |
---|
| 535 | DEALLOCATE( nxlf , nxrf , nynf , nysf ) |
---|
| 536 | |
---|
[807] | 537 | |
---|
[809] | 538 | #if ! defined( __check) |
---|
[145] | 539 | ! |
---|
| 540 | !-- Collect index bounds from other PEs (to be written to restart file later) |
---|
| 541 | ALLOCATE( hor_index_bounds(4,0:numprocs-1) ) |
---|
| 542 | |
---|
| 543 | IF ( myid == 0 ) THEN |
---|
| 544 | |
---|
| 545 | hor_index_bounds(1,0) = nxl |
---|
| 546 | hor_index_bounds(2,0) = nxr |
---|
| 547 | hor_index_bounds(3,0) = nys |
---|
| 548 | hor_index_bounds(4,0) = nyn |
---|
| 549 | |
---|
| 550 | ! |
---|
| 551 | !-- Receive data from all other PEs |
---|
| 552 | DO i = 1, numprocs-1 |
---|
| 553 | CALL MPI_RECV( ibuf, 4, MPI_INTEGER, i, MPI_ANY_TAG, comm2d, status, & |
---|
| 554 | ierr ) |
---|
| 555 | hor_index_bounds(:,i) = ibuf(1:4) |
---|
| 556 | ENDDO |
---|
| 557 | |
---|
| 558 | ELSE |
---|
| 559 | ! |
---|
| 560 | !-- Send index bounds to PE0 |
---|
| 561 | ibuf(1) = nxl |
---|
| 562 | ibuf(2) = nxr |
---|
| 563 | ibuf(3) = nys |
---|
| 564 | ibuf(4) = nyn |
---|
| 565 | CALL MPI_SEND( ibuf, 4, MPI_INTEGER, 0, myid, comm2d, ierr ) |
---|
| 566 | |
---|
| 567 | ENDIF |
---|
| 568 | |
---|
[807] | 569 | #endif |
---|
| 570 | |
---|
[1] | 571 | #if defined( __print ) |
---|
| 572 | ! |
---|
| 573 | !-- Control output |
---|
| 574 | IF ( myid == 0 ) THEN |
---|
| 575 | PRINT*, '*** processor topology ***' |
---|
| 576 | PRINT*, ' ' |
---|
| 577 | PRINT*, 'myid pcoord left right south north idx idy nxl: nxr',& |
---|
| 578 | &' nys: nyn' |
---|
| 579 | PRINT*, '------------------------------------------------------------',& |
---|
| 580 | &'-----------' |
---|
| 581 | WRITE (*,1000) 0, pcoord(1), pcoord(2), pleft, pright, psouth, pnorth, & |
---|
| 582 | myidx, myidy, nxl, nxr, nys, nyn |
---|
| 583 | 1000 FORMAT (I4,2X,'(',I3,',',I3,')',3X,I4,2X,I4,3X,I4,2X,I4,2X,I3,1X,I3, & |
---|
| 584 | 2(2X,I4,':',I4)) |
---|
| 585 | |
---|
| 586 | ! |
---|
[108] | 587 | !-- Receive data from the other PEs |
---|
[1] | 588 | DO i = 1,numprocs-1 |
---|
| 589 | CALL MPI_RECV( ibuf, 12, MPI_INTEGER, i, MPI_ANY_TAG, comm2d, status, & |
---|
| 590 | ierr ) |
---|
| 591 | WRITE (*,1000) i, ( ibuf(j) , j = 1,12 ) |
---|
| 592 | ENDDO |
---|
| 593 | ELSE |
---|
| 594 | |
---|
| 595 | ! |
---|
| 596 | !-- Send data to PE0 |
---|
| 597 | ibuf(1) = pcoord(1); ibuf(2) = pcoord(2); ibuf(3) = pleft |
---|
| 598 | ibuf(4) = pright; ibuf(5) = psouth; ibuf(6) = pnorth; ibuf(7) = myidx |
---|
| 599 | ibuf(8) = myidy; ibuf(9) = nxl; ibuf(10) = nxr; ibuf(11) = nys |
---|
| 600 | ibuf(12) = nyn |
---|
| 601 | CALL MPI_SEND( ibuf, 12, MPI_INTEGER, 0, myid, comm2d, ierr ) |
---|
| 602 | ENDIF |
---|
| 603 | #endif |
---|
| 604 | |
---|
[809] | 605 | #if defined( __parallel ) && ! defined( __check) |
---|
[102] | 606 | #if defined( __mpi2 ) |
---|
| 607 | ! |
---|
| 608 | !-- In case of coupled runs, get the port name on PE0 of the atmosphere model |
---|
| 609 | !-- and pass it to PE0 of the ocean model |
---|
| 610 | IF ( myid == 0 ) THEN |
---|
| 611 | |
---|
| 612 | IF ( coupling_mode == 'atmosphere_to_ocean' ) THEN |
---|
| 613 | |
---|
| 614 | CALL MPI_OPEN_PORT( MPI_INFO_NULL, port_name, ierr ) |
---|
[108] | 615 | |
---|
[102] | 616 | CALL MPI_PUBLISH_NAME( 'palm_coupler', MPI_INFO_NULL, port_name, & |
---|
| 617 | ierr ) |
---|
[108] | 618 | |
---|
| 619 | ! |
---|
[104] | 620 | !-- Write a flag file for the ocean model and the other atmosphere |
---|
| 621 | !-- processes. |
---|
| 622 | !-- There seems to be a bug in MPICH2 which causes hanging processes |
---|
| 623 | !-- in case that execution of LOOKUP_NAME is continued too early |
---|
| 624 | !-- (i.e. before the port has been created) |
---|
| 625 | OPEN( 90, FILE='COUPLING_PORT_OPENED', FORM='FORMATTED' ) |
---|
| 626 | WRITE ( 90, '(''TRUE'')' ) |
---|
| 627 | CLOSE ( 90 ) |
---|
[102] | 628 | |
---|
| 629 | ELSEIF ( coupling_mode == 'ocean_to_atmosphere' ) THEN |
---|
| 630 | |
---|
[104] | 631 | ! |
---|
| 632 | !-- Continue only if the atmosphere model has created the port. |
---|
| 633 | !-- There seems to be a bug in MPICH2 which causes hanging processes |
---|
| 634 | !-- in case that execution of LOOKUP_NAME is continued too early |
---|
| 635 | !-- (i.e. before the port has been created) |
---|
| 636 | INQUIRE( FILE='COUPLING_PORT_OPENED', EXIST=found ) |
---|
| 637 | DO WHILE ( .NOT. found ) |
---|
| 638 | INQUIRE( FILE='COUPLING_PORT_OPENED', EXIST=found ) |
---|
| 639 | ENDDO |
---|
| 640 | |
---|
[102] | 641 | CALL MPI_LOOKUP_NAME( 'palm_coupler', MPI_INFO_NULL, port_name, ierr ) |
---|
| 642 | |
---|
| 643 | ENDIF |
---|
| 644 | |
---|
| 645 | ENDIF |
---|
| 646 | |
---|
| 647 | ! |
---|
| 648 | !-- In case of coupled runs, establish the connection between the atmosphere |
---|
| 649 | !-- and the ocean model and define the intercommunicator (comm_inter) |
---|
| 650 | CALL MPI_BARRIER( comm2d, ierr ) |
---|
| 651 | IF ( coupling_mode == 'atmosphere_to_ocean' ) THEN |
---|
| 652 | |
---|
| 653 | CALL MPI_COMM_ACCEPT( port_name, MPI_INFO_NULL, 0, MPI_COMM_WORLD, & |
---|
| 654 | comm_inter, ierr ) |
---|
[108] | 655 | coupling_mode_remote = 'ocean_to_atmosphere' |
---|
| 656 | |
---|
[102] | 657 | ELSEIF ( coupling_mode == 'ocean_to_atmosphere' ) THEN |
---|
| 658 | |
---|
| 659 | CALL MPI_COMM_CONNECT( port_name, MPI_INFO_NULL, 0, MPI_COMM_WORLD, & |
---|
| 660 | comm_inter, ierr ) |
---|
[108] | 661 | coupling_mode_remote = 'atmosphere_to_ocean' |
---|
| 662 | |
---|
[102] | 663 | ENDIF |
---|
[206] | 664 | #endif |
---|
[102] | 665 | |
---|
[667] | 666 | ! |
---|
[709] | 667 | !-- Determine the number of ghost point layers |
---|
| 668 | IF ( scalar_advec == 'ws-scheme' .OR. momentum_advec == 'ws-scheme' ) THEN |
---|
[667] | 669 | nbgp = 3 |
---|
| 670 | ELSE |
---|
| 671 | nbgp = 1 |
---|
[709] | 672 | ENDIF |
---|
[667] | 673 | |
---|
[102] | 674 | ! |
---|
[709] | 675 | !-- Create a new MPI derived datatype for the exchange of surface (xy) data, |
---|
| 676 | !-- which is needed for coupled atmosphere-ocean runs. |
---|
| 677 | !-- First, calculate number of grid points of an xy-plane. |
---|
[667] | 678 | ngp_xy = ( nxr - nxl + 1 + 2 * nbgp ) * ( nyn - nys + 1 + 2 * nbgp ) |
---|
[102] | 679 | CALL MPI_TYPE_VECTOR( ngp_xy, 1, nzt-nzb+2, MPI_REAL, type_xy, ierr ) |
---|
| 680 | CALL MPI_TYPE_COMMIT( type_xy, ierr ) |
---|
[667] | 681 | |
---|
[709] | 682 | IF ( TRIM( coupling_mode ) /= 'uncoupled' ) THEN |
---|
[667] | 683 | |
---|
| 684 | ! |
---|
| 685 | !-- Pass the number of grid points of the atmosphere model to |
---|
| 686 | !-- the ocean model and vice versa |
---|
| 687 | IF ( coupling_mode == 'atmosphere_to_ocean' ) THEN |
---|
| 688 | |
---|
| 689 | nx_a = nx |
---|
| 690 | ny_a = ny |
---|
| 691 | |
---|
[709] | 692 | IF ( myid == 0 ) THEN |
---|
| 693 | |
---|
| 694 | CALL MPI_SEND( nx_a, 1, MPI_INTEGER, numprocs, 1, comm_inter, & |
---|
| 695 | ierr ) |
---|
| 696 | CALL MPI_SEND( ny_a, 1, MPI_INTEGER, numprocs, 2, comm_inter, & |
---|
| 697 | ierr ) |
---|
| 698 | CALL MPI_SEND( pdims, 2, MPI_INTEGER, numprocs, 3, comm_inter, & |
---|
| 699 | ierr ) |
---|
| 700 | CALL MPI_RECV( nx_o, 1, MPI_INTEGER, numprocs, 4, comm_inter, & |
---|
| 701 | status, ierr ) |
---|
| 702 | CALL MPI_RECV( ny_o, 1, MPI_INTEGER, numprocs, 5, comm_inter, & |
---|
| 703 | status, ierr ) |
---|
| 704 | CALL MPI_RECV( pdims_remote, 2, MPI_INTEGER, numprocs, 6, & |
---|
[667] | 705 | comm_inter, status, ierr ) |
---|
| 706 | ENDIF |
---|
| 707 | |
---|
[709] | 708 | CALL MPI_BCAST( nx_o, 1, MPI_INTEGER, 0, comm2d, ierr ) |
---|
| 709 | CALL MPI_BCAST( ny_o, 1, MPI_INTEGER, 0, comm2d, ierr ) |
---|
| 710 | CALL MPI_BCAST( pdims_remote, 2, MPI_INTEGER, 0, comm2d, ierr ) |
---|
[667] | 711 | |
---|
| 712 | ELSEIF ( coupling_mode == 'ocean_to_atmosphere' ) THEN |
---|
| 713 | |
---|
| 714 | nx_o = nx |
---|
| 715 | ny_o = ny |
---|
| 716 | |
---|
| 717 | IF ( myid == 0 ) THEN |
---|
[709] | 718 | |
---|
| 719 | CALL MPI_RECV( nx_a, 1, MPI_INTEGER, 0, 1, comm_inter, status, & |
---|
| 720 | ierr ) |
---|
| 721 | CALL MPI_RECV( ny_a, 1, MPI_INTEGER, 0, 2, comm_inter, status, & |
---|
| 722 | ierr ) |
---|
| 723 | CALL MPI_RECV( pdims_remote, 2, MPI_INTEGER, 0, 3, comm_inter, & |
---|
| 724 | status, ierr ) |
---|
| 725 | CALL MPI_SEND( nx_o, 1, MPI_INTEGER, 0, 4, comm_inter, ierr ) |
---|
| 726 | CALL MPI_SEND( ny_o, 1, MPI_INTEGER, 0, 5, comm_inter, ierr ) |
---|
| 727 | CALL MPI_SEND( pdims, 2, MPI_INTEGER, 0, 6, comm_inter, ierr ) |
---|
[667] | 728 | ENDIF |
---|
| 729 | |
---|
| 730 | CALL MPI_BCAST( nx_a, 1, MPI_INTEGER, 0, comm2d, ierr) |
---|
| 731 | CALL MPI_BCAST( ny_a, 1, MPI_INTEGER, 0, comm2d, ierr) |
---|
| 732 | CALL MPI_BCAST( pdims_remote, 2, MPI_INTEGER, 0, comm2d, ierr) |
---|
| 733 | |
---|
| 734 | ENDIF |
---|
| 735 | |
---|
[709] | 736 | ngp_a = ( nx_a+1 + 2 * nbgp ) * ( ny_a+1 + 2 * nbgp ) |
---|
| 737 | ngp_o = ( nx_o+1 + 2 * nbgp ) * ( ny_o+1 + 2 * nbgp ) |
---|
[667] | 738 | |
---|
| 739 | ! |
---|
[709] | 740 | !-- Determine if the horizontal grid and the number of PEs in ocean and |
---|
| 741 | !-- atmosphere is same or not |
---|
| 742 | IF ( nx_o == nx_a .AND. ny_o == ny_a .AND. & |
---|
[667] | 743 | pdims(1) == pdims_remote(1) .AND. pdims(2) == pdims_remote(2) ) & |
---|
| 744 | THEN |
---|
| 745 | coupling_topology = 0 |
---|
| 746 | ELSE |
---|
| 747 | coupling_topology = 1 |
---|
| 748 | ENDIF |
---|
| 749 | |
---|
| 750 | ! |
---|
| 751 | !-- Determine the target PEs for the exchange between ocean and |
---|
| 752 | !-- atmosphere (comm2d) |
---|
[709] | 753 | IF ( coupling_topology == 0 ) THEN |
---|
| 754 | ! |
---|
| 755 | !-- In case of identical topologies, every atmosphere PE has exactly one |
---|
| 756 | !-- ocean PE counterpart and vice versa |
---|
| 757 | IF ( TRIM( coupling_mode ) == 'atmosphere_to_ocean' ) THEN |
---|
[667] | 758 | target_id = myid + numprocs |
---|
| 759 | ELSE |
---|
| 760 | target_id = myid |
---|
| 761 | ENDIF |
---|
| 762 | |
---|
| 763 | ELSE |
---|
| 764 | ! |
---|
| 765 | !-- In case of nonequivalent topology in ocean and atmosphere only for |
---|
| 766 | !-- PE0 in ocean and PE0 in atmosphere a target_id is needed, since |
---|
[709] | 767 | !-- data echxchange between ocean and atmosphere will be done only |
---|
| 768 | !-- between these PEs. |
---|
| 769 | IF ( myid == 0 ) THEN |
---|
| 770 | |
---|
| 771 | IF ( TRIM( coupling_mode ) == 'atmosphere_to_ocean' ) THEN |
---|
[667] | 772 | target_id = numprocs |
---|
| 773 | ELSE |
---|
| 774 | target_id = 0 |
---|
| 775 | ENDIF |
---|
[709] | 776 | |
---|
[667] | 777 | ENDIF |
---|
[709] | 778 | |
---|
[667] | 779 | ENDIF |
---|
| 780 | |
---|
| 781 | ENDIF |
---|
| 782 | |
---|
| 783 | |
---|
[102] | 784 | #endif |
---|
| 785 | |
---|
[1] | 786 | #else |
---|
| 787 | |
---|
| 788 | ! |
---|
| 789 | !-- Array bounds when running on a single PE (respectively a non-parallel |
---|
| 790 | !-- machine) |
---|
| 791 | nxl = 0 |
---|
| 792 | nxr = nx |
---|
| 793 | nxra = nx |
---|
| 794 | nnx = nxr - nxl + 1 |
---|
| 795 | nys = 0 |
---|
| 796 | nyn = ny |
---|
| 797 | nyna = ny |
---|
| 798 | nny = nyn - nys + 1 |
---|
| 799 | nzb = 0 |
---|
| 800 | nzt = nz |
---|
| 801 | nzta = nz |
---|
| 802 | nnz = nz |
---|
| 803 | |
---|
[145] | 804 | ALLOCATE( hor_index_bounds(4,0:0) ) |
---|
| 805 | hor_index_bounds(1,0) = nxl |
---|
| 806 | hor_index_bounds(2,0) = nxr |
---|
| 807 | hor_index_bounds(3,0) = nys |
---|
| 808 | hor_index_bounds(4,0) = nyn |
---|
| 809 | |
---|
[1] | 810 | ! |
---|
| 811 | !-- Array bounds for the pressure solver (in the parallel code, these bounds |
---|
| 812 | !-- are the ones for the transposed arrays) |
---|
| 813 | nys_x = nys |
---|
| 814 | nyn_x = nyn |
---|
| 815 | nyn_xa = nyn |
---|
| 816 | nzb_x = nzb + 1 |
---|
| 817 | nzt_x = nzt |
---|
| 818 | nzt_xa = nzt |
---|
| 819 | |
---|
| 820 | nxl_y = nxl |
---|
| 821 | nxr_y = nxr |
---|
| 822 | nxr_ya = nxr |
---|
| 823 | nzb_y = nzb + 1 |
---|
| 824 | nzt_y = nzt |
---|
| 825 | nzt_ya = nzt |
---|
| 826 | |
---|
| 827 | nxl_z = nxl |
---|
| 828 | nxr_z = nxr |
---|
| 829 | nxr_za = nxr |
---|
| 830 | nys_z = nys |
---|
| 831 | nyn_z = nyn |
---|
| 832 | nyn_za = nyn |
---|
| 833 | |
---|
| 834 | #endif |
---|
| 835 | |
---|
| 836 | ! |
---|
| 837 | !-- Calculate number of grid levels necessary for the multigrid poisson solver |
---|
| 838 | !-- as well as the gridpoint indices on each level |
---|
| 839 | IF ( psolver == 'multigrid' ) THEN |
---|
| 840 | |
---|
| 841 | ! |
---|
| 842 | !-- First calculate number of possible grid levels for the subdomains |
---|
| 843 | mg_levels_x = 1 |
---|
| 844 | mg_levels_y = 1 |
---|
| 845 | mg_levels_z = 1 |
---|
| 846 | |
---|
| 847 | i = nnx |
---|
| 848 | DO WHILE ( MOD( i, 2 ) == 0 .AND. i /= 2 ) |
---|
| 849 | i = i / 2 |
---|
| 850 | mg_levels_x = mg_levels_x + 1 |
---|
| 851 | ENDDO |
---|
| 852 | |
---|
| 853 | j = nny |
---|
| 854 | DO WHILE ( MOD( j, 2 ) == 0 .AND. j /= 2 ) |
---|
| 855 | j = j / 2 |
---|
| 856 | mg_levels_y = mg_levels_y + 1 |
---|
| 857 | ENDDO |
---|
| 858 | |
---|
[181] | 859 | k = nz ! do not use nnz because it might be > nz due to transposition |
---|
| 860 | ! requirements |
---|
[1] | 861 | DO WHILE ( MOD( k, 2 ) == 0 .AND. k /= 2 ) |
---|
| 862 | k = k / 2 |
---|
| 863 | mg_levels_z = mg_levels_z + 1 |
---|
| 864 | ENDDO |
---|
| 865 | |
---|
| 866 | maximum_grid_level = MIN( mg_levels_x, mg_levels_y, mg_levels_z ) |
---|
| 867 | |
---|
| 868 | ! |
---|
| 869 | !-- Find out, if the total domain allows more levels. These additional |
---|
[709] | 870 | !-- levels are identically processed on all PEs. |
---|
[197] | 871 | IF ( numprocs > 1 .AND. mg_switch_to_pe0_level /= -1 ) THEN |
---|
[709] | 872 | |
---|
[1] | 873 | IF ( mg_levels_z > MIN( mg_levels_x, mg_levels_y ) ) THEN |
---|
[709] | 874 | |
---|
[1] | 875 | mg_switch_to_pe0_level_l = maximum_grid_level |
---|
| 876 | |
---|
| 877 | mg_levels_x = 1 |
---|
| 878 | mg_levels_y = 1 |
---|
| 879 | |
---|
| 880 | i = nx+1 |
---|
| 881 | DO WHILE ( MOD( i, 2 ) == 0 .AND. i /= 2 ) |
---|
| 882 | i = i / 2 |
---|
| 883 | mg_levels_x = mg_levels_x + 1 |
---|
| 884 | ENDDO |
---|
| 885 | |
---|
| 886 | j = ny+1 |
---|
| 887 | DO WHILE ( MOD( j, 2 ) == 0 .AND. j /= 2 ) |
---|
| 888 | j = j / 2 |
---|
| 889 | mg_levels_y = mg_levels_y + 1 |
---|
| 890 | ENDDO |
---|
| 891 | |
---|
| 892 | maximum_grid_level_l = MIN( mg_levels_x, mg_levels_y, mg_levels_z ) |
---|
| 893 | |
---|
| 894 | IF ( maximum_grid_level_l > mg_switch_to_pe0_level_l ) THEN |
---|
| 895 | mg_switch_to_pe0_level_l = maximum_grid_level_l - & |
---|
| 896 | mg_switch_to_pe0_level_l + 1 |
---|
| 897 | ELSE |
---|
| 898 | mg_switch_to_pe0_level_l = 0 |
---|
| 899 | ENDIF |
---|
[709] | 900 | |
---|
[1] | 901 | ELSE |
---|
| 902 | mg_switch_to_pe0_level_l = 0 |
---|
| 903 | maximum_grid_level_l = maximum_grid_level |
---|
[709] | 904 | |
---|
[1] | 905 | ENDIF |
---|
| 906 | |
---|
| 907 | ! |
---|
| 908 | !-- Use switch level calculated above only if it is not pre-defined |
---|
| 909 | !-- by user |
---|
| 910 | IF ( mg_switch_to_pe0_level == 0 ) THEN |
---|
| 911 | IF ( mg_switch_to_pe0_level_l /= 0 ) THEN |
---|
| 912 | mg_switch_to_pe0_level = mg_switch_to_pe0_level_l |
---|
| 913 | maximum_grid_level = maximum_grid_level_l |
---|
| 914 | ENDIF |
---|
| 915 | |
---|
| 916 | ELSE |
---|
| 917 | ! |
---|
| 918 | !-- Check pre-defined value and reset to default, if neccessary |
---|
| 919 | IF ( mg_switch_to_pe0_level < mg_switch_to_pe0_level_l .OR. & |
---|
| 920 | mg_switch_to_pe0_level >= maximum_grid_level_l ) THEN |
---|
[254] | 921 | message_string = 'mg_switch_to_pe0_level ' // & |
---|
| 922 | 'out of range and reset to default (=0)' |
---|
| 923 | CALL message( 'init_pegrid', 'PA0235', 0, 1, 0, 6, 0 ) |
---|
[1] | 924 | mg_switch_to_pe0_level = 0 |
---|
| 925 | ELSE |
---|
| 926 | ! |
---|
| 927 | !-- Use the largest number of possible levels anyway and recalculate |
---|
| 928 | !-- the switch level to this largest number of possible values |
---|
| 929 | maximum_grid_level = maximum_grid_level_l |
---|
| 930 | |
---|
| 931 | ENDIF |
---|
[709] | 932 | |
---|
[1] | 933 | ENDIF |
---|
| 934 | |
---|
| 935 | ENDIF |
---|
| 936 | |
---|
| 937 | ALLOCATE( grid_level_count(maximum_grid_level), & |
---|
| 938 | nxl_mg(maximum_grid_level), nxr_mg(maximum_grid_level), & |
---|
| 939 | nyn_mg(maximum_grid_level), nys_mg(maximum_grid_level), & |
---|
| 940 | nzt_mg(maximum_grid_level) ) |
---|
| 941 | |
---|
| 942 | grid_level_count = 0 |
---|
[778] | 943 | |
---|
[1] | 944 | nxl_l = nxl; nxr_l = nxr; nys_l = nys; nyn_l = nyn; nzt_l = nzt |
---|
| 945 | |
---|
| 946 | DO i = maximum_grid_level, 1 , -1 |
---|
| 947 | |
---|
| 948 | IF ( i == mg_switch_to_pe0_level ) THEN |
---|
[809] | 949 | #if defined( __parallel ) && ! defined( __check ) |
---|
[1] | 950 | ! |
---|
| 951 | !-- Save the grid size of the subdomain at the switch level, because |
---|
| 952 | !-- it is needed in poismg. |
---|
| 953 | ind(1) = nxl_l; ind(2) = nxr_l |
---|
| 954 | ind(3) = nys_l; ind(4) = nyn_l |
---|
| 955 | ind(5) = nzt_l |
---|
| 956 | ALLOCATE( ind_all(5*numprocs), mg_loc_ind(5,0:numprocs-1) ) |
---|
| 957 | CALL MPI_ALLGATHER( ind, 5, MPI_INTEGER, ind_all, 5, & |
---|
| 958 | MPI_INTEGER, comm2d, ierr ) |
---|
| 959 | DO j = 0, numprocs-1 |
---|
| 960 | DO k = 1, 5 |
---|
| 961 | mg_loc_ind(k,j) = ind_all(k+j*5) |
---|
| 962 | ENDDO |
---|
| 963 | ENDDO |
---|
| 964 | DEALLOCATE( ind_all ) |
---|
| 965 | ! |
---|
[709] | 966 | !-- Calculate the grid size of the total domain |
---|
[1] | 967 | nxr_l = ( nxr_l-nxl_l+1 ) * pdims(1) - 1 |
---|
| 968 | nxl_l = 0 |
---|
| 969 | nyn_l = ( nyn_l-nys_l+1 ) * pdims(2) - 1 |
---|
| 970 | nys_l = 0 |
---|
| 971 | ! |
---|
| 972 | !-- The size of this gathered array must not be larger than the |
---|
| 973 | !-- array tend, which is used in the multigrid scheme as a temporary |
---|
[778] | 974 | !-- array. Therefore the subdomain size of an PE is calculated and |
---|
| 975 | !-- the size of the gathered grid. These values are used in |
---|
| 976 | !-- routines pres and poismg |
---|
| 977 | subdomain_size = ( nxr - nxl + 2 * nbgp + 1 ) * & |
---|
| 978 | ( nyn - nys + 2 * nbgp + 1 ) * ( nzt - nzb + 2 ) |
---|
[1] | 979 | gathered_size = ( nxr_l - nxl_l + 3 ) * ( nyn_l - nys_l + 3 ) * & |
---|
| 980 | ( nzt_l - nzb + 2 ) |
---|
| 981 | |
---|
[809] | 982 | #elif ! defined ( __parallel ) |
---|
[254] | 983 | message_string = 'multigrid gather/scatter impossible ' // & |
---|
[1] | 984 | 'in non parallel mode' |
---|
[254] | 985 | CALL message( 'init_pegrid', 'PA0237', 1, 2, 0, 6, 0 ) |
---|
[1] | 986 | #endif |
---|
| 987 | ENDIF |
---|
| 988 | |
---|
| 989 | nxl_mg(i) = nxl_l |
---|
| 990 | nxr_mg(i) = nxr_l |
---|
| 991 | nys_mg(i) = nys_l |
---|
| 992 | nyn_mg(i) = nyn_l |
---|
| 993 | nzt_mg(i) = nzt_l |
---|
| 994 | |
---|
| 995 | nxl_l = nxl_l / 2 |
---|
| 996 | nxr_l = nxr_l / 2 |
---|
| 997 | nys_l = nys_l / 2 |
---|
| 998 | nyn_l = nyn_l / 2 |
---|
| 999 | nzt_l = nzt_l / 2 |
---|
[778] | 1000 | |
---|
[1] | 1001 | ENDDO |
---|
| 1002 | |
---|
[780] | 1003 | ! |
---|
| 1004 | !-- Temporary problem: Currently calculation of maxerror iin routine poismg crashes |
---|
| 1005 | !-- if grid data are collected on PE0 already on the finest grid level. |
---|
| 1006 | !-- To be solved later. |
---|
| 1007 | IF ( maximum_grid_level == mg_switch_to_pe0_level ) THEN |
---|
| 1008 | message_string = 'grid coarsening on subdomain level cannot be performed' |
---|
| 1009 | CALL message( 'poismg', 'PA0236', 1, 2, 0, 6, 0 ) |
---|
| 1010 | ENDIF |
---|
| 1011 | |
---|
[1] | 1012 | ELSE |
---|
| 1013 | |
---|
[667] | 1014 | maximum_grid_level = 0 |
---|
[1] | 1015 | |
---|
| 1016 | ENDIF |
---|
| 1017 | |
---|
[722] | 1018 | ! |
---|
| 1019 | !-- Default level 0 tells exchange_horiz that all ghost planes have to be |
---|
| 1020 | !-- exchanged. grid_level is adjusted in poismg, where only one ghost plane |
---|
| 1021 | !-- is required. |
---|
| 1022 | grid_level = 0 |
---|
[1] | 1023 | |
---|
[809] | 1024 | #if defined( __parallel ) && ! defined ( __check ) |
---|
[1] | 1025 | ! |
---|
| 1026 | !-- Gridpoint number for the exchange of ghost points (y-line for 2D-arrays) |
---|
[667] | 1027 | ngp_y = nyn - nys + 1 + 2 * nbgp |
---|
[1] | 1028 | |
---|
| 1029 | ! |
---|
[709] | 1030 | !-- Define new MPI derived datatypes for the exchange of ghost points in |
---|
| 1031 | !-- x- and y-direction for 2D-arrays (line) |
---|
| 1032 | CALL MPI_TYPE_VECTOR( nxr-nxl+1+2*nbgp, nbgp, ngp_y, MPI_REAL, type_x, & |
---|
| 1033 | ierr ) |
---|
[1] | 1034 | CALL MPI_TYPE_COMMIT( type_x, ierr ) |
---|
[709] | 1035 | CALL MPI_TYPE_VECTOR( nxr-nxl+1+2*nbgp, nbgp, ngp_y, MPI_INTEGER, & |
---|
| 1036 | type_x_int, ierr ) |
---|
[1] | 1037 | CALL MPI_TYPE_COMMIT( type_x_int, ierr ) |
---|
| 1038 | |
---|
[667] | 1039 | CALL MPI_TYPE_VECTOR( nbgp, ngp_y, ngp_y, MPI_REAL, type_y, ierr ) |
---|
| 1040 | CALL MPI_TYPE_COMMIT( type_y, ierr ) |
---|
| 1041 | CALL MPI_TYPE_VECTOR( nbgp, ngp_y, ngp_y, MPI_INTEGER, type_y_int, ierr ) |
---|
| 1042 | CALL MPI_TYPE_COMMIT( type_y_int, ierr ) |
---|
| 1043 | |
---|
| 1044 | |
---|
[1] | 1045 | ! |
---|
| 1046 | !-- Calculate gridpoint numbers for the exchange of ghost points along x |
---|
| 1047 | !-- (yz-plane for 3D-arrays) and define MPI derived data type(s) for the |
---|
| 1048 | !-- exchange of ghost points in y-direction (xz-plane). |
---|
| 1049 | !-- Do these calculations for the model grid and (if necessary) also |
---|
| 1050 | !-- for the coarser grid levels used in the multigrid method |
---|
[667] | 1051 | ALLOCATE ( ngp_yz(0:maximum_grid_level), type_xz(0:maximum_grid_level),& |
---|
| 1052 | type_yz(0:maximum_grid_level) ) |
---|
[1] | 1053 | |
---|
| 1054 | nxl_l = nxl; nxr_l = nxr; nys_l = nys; nyn_l = nyn; nzb_l = nzb; nzt_l = nzt |
---|
[709] | 1055 | |
---|
[667] | 1056 | ! |
---|
| 1057 | !-- Discern between the model grid, which needs nbgp ghost points and |
---|
| 1058 | !-- grid levels for the multigrid scheme. In the latter case only one |
---|
| 1059 | !-- ghost point is necessary. |
---|
[709] | 1060 | !-- First definition of MPI-datatypes for exchange of ghost layers on normal |
---|
[667] | 1061 | !-- grid. The following loop is needed for data exchange in poismg.f90. |
---|
| 1062 | ! |
---|
| 1063 | !-- Determine number of grid points of yz-layer for exchange |
---|
| 1064 | ngp_yz(0) = (nzt - nzb + 2) * (nyn - nys + 1 + 2 * nbgp) |
---|
[709] | 1065 | |
---|
[667] | 1066 | ! |
---|
[709] | 1067 | !-- Define an MPI-datatype for the exchange of left/right boundaries. |
---|
| 1068 | !-- Although data are contiguous in physical memory (which does not |
---|
| 1069 | !-- necessarily require an MPI-derived datatype), the data exchange between |
---|
| 1070 | !-- left and right PE's using the MPI-derived type is 10% faster than without. |
---|
[667] | 1071 | CALL MPI_TYPE_VECTOR( nxr-nxl+1+2*nbgp, nbgp*(nzt-nzb+2), ngp_yz(0), & |
---|
[709] | 1072 | MPI_REAL, type_xz(0), ierr ) |
---|
[667] | 1073 | CALL MPI_TYPE_COMMIT( type_xz(0), ierr ) |
---|
[1] | 1074 | |
---|
[709] | 1075 | CALL MPI_TYPE_VECTOR( nbgp, ngp_yz(0), ngp_yz(0), MPI_REAL, type_yz(0), & |
---|
| 1076 | ierr ) |
---|
[667] | 1077 | CALL MPI_TYPE_COMMIT( type_yz(0), ierr ) |
---|
[709] | 1078 | |
---|
[667] | 1079 | ! |
---|
[709] | 1080 | !-- Definition of MPI-datatypes for multigrid method (coarser level grids) |
---|
[667] | 1081 | IF ( psolver == 'multigrid' ) THEN |
---|
| 1082 | ! |
---|
[709] | 1083 | !-- Definition of MPI-datatyoe as above, but only 1 ghost level is used |
---|
| 1084 | DO i = maximum_grid_level, 1 , -1 |
---|
| 1085 | |
---|
[667] | 1086 | ngp_yz(i) = (nzt_l - nzb_l + 2) * (nyn_l - nys_l + 3) |
---|
| 1087 | |
---|
| 1088 | CALL MPI_TYPE_VECTOR( nxr_l-nxl_l+3, nzt_l-nzb_l+2, ngp_yz(i), & |
---|
[709] | 1089 | MPI_REAL, type_xz(i), ierr ) |
---|
[667] | 1090 | CALL MPI_TYPE_COMMIT( type_xz(i), ierr ) |
---|
[1] | 1091 | |
---|
[709] | 1092 | CALL MPI_TYPE_VECTOR( 1, ngp_yz(i), ngp_yz(i), MPI_REAL, type_yz(i), & |
---|
| 1093 | ierr ) |
---|
[667] | 1094 | CALL MPI_TYPE_COMMIT( type_yz(i), ierr ) |
---|
| 1095 | |
---|
| 1096 | nxl_l = nxl_l / 2 |
---|
| 1097 | nxr_l = nxr_l / 2 |
---|
| 1098 | nys_l = nys_l / 2 |
---|
| 1099 | nyn_l = nyn_l / 2 |
---|
| 1100 | nzt_l = nzt_l / 2 |
---|
[709] | 1101 | |
---|
[667] | 1102 | ENDDO |
---|
[709] | 1103 | |
---|
| 1104 | ENDIF |
---|
[1] | 1105 | #endif |
---|
| 1106 | |
---|
[809] | 1107 | #if defined( __parallel ) && ! defined ( __check ) |
---|
[1] | 1108 | ! |
---|
| 1109 | !-- Setting of flags for inflow/outflow conditions in case of non-cyclic |
---|
[106] | 1110 | !-- horizontal boundary conditions. |
---|
[1] | 1111 | IF ( pleft == MPI_PROC_NULL ) THEN |
---|
[978] | 1112 | IF ( bc_lr == 'dirichlet/radiation' .OR. bc_lr == 'dirichlet/neumann' ) THEN |
---|
[1] | 1113 | inflow_l = .TRUE. |
---|
[978] | 1114 | ELSEIF ( bc_lr == 'radiation/dirichlet' .OR. bc_lr == 'neumann/dirichlet' ) THEN |
---|
[1] | 1115 | outflow_l = .TRUE. |
---|
| 1116 | ENDIF |
---|
| 1117 | ENDIF |
---|
| 1118 | |
---|
| 1119 | IF ( pright == MPI_PROC_NULL ) THEN |
---|
[978] | 1120 | IF ( bc_lr == 'dirichlet/radiation' .OR. bc_lr == 'dirichlet/neumann' ) THEN |
---|
[1] | 1121 | outflow_r = .TRUE. |
---|
[978] | 1122 | ELSEIF ( bc_lr == 'radiation/dirichlet' .OR. bc_lr == 'neumann/dirichlet' ) THEN |
---|
[1] | 1123 | inflow_r = .TRUE. |
---|
| 1124 | ENDIF |
---|
| 1125 | ENDIF |
---|
| 1126 | |
---|
| 1127 | IF ( psouth == MPI_PROC_NULL ) THEN |
---|
[978] | 1128 | IF ( bc_ns == 'dirichlet/radiation' .OR. bc_ns == 'dirichlet/neumann' ) THEN |
---|
[1] | 1129 | outflow_s = .TRUE. |
---|
[978] | 1130 | ELSEIF ( bc_ns == 'radiation/dirichlet' .OR. bc_ns == 'neumann/dirichlet' ) THEN |
---|
[1] | 1131 | inflow_s = .TRUE. |
---|
| 1132 | ENDIF |
---|
| 1133 | ENDIF |
---|
| 1134 | |
---|
| 1135 | IF ( pnorth == MPI_PROC_NULL ) THEN |
---|
[978] | 1136 | IF ( bc_ns == 'dirichlet/radiation' .OR. bc_ns == 'dirichlet/neumann' ) THEN |
---|
[1] | 1137 | inflow_n = .TRUE. |
---|
[978] | 1138 | ELSEIF ( bc_ns == 'radiation/dirichlet' .OR. bc_ns == 'neumann/dirichlet' ) THEN |
---|
[1] | 1139 | outflow_n = .TRUE. |
---|
| 1140 | ENDIF |
---|
| 1141 | ENDIF |
---|
| 1142 | |
---|
[151] | 1143 | ! |
---|
| 1144 | !-- Broadcast the id of the inflow PE |
---|
| 1145 | IF ( inflow_l ) THEN |
---|
[163] | 1146 | id_inflow_l = myidx |
---|
[151] | 1147 | ELSE |
---|
| 1148 | id_inflow_l = 0 |
---|
| 1149 | ENDIF |
---|
[622] | 1150 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
---|
[151] | 1151 | CALL MPI_ALLREDUCE( id_inflow_l, id_inflow, 1, MPI_INTEGER, MPI_SUM, & |
---|
| 1152 | comm1dx, ierr ) |
---|
| 1153 | |
---|
[163] | 1154 | ! |
---|
| 1155 | !-- Broadcast the id of the recycling plane |
---|
| 1156 | !-- WARNING: needs to be adjusted in case of inflows other than from left side! |
---|
[622] | 1157 | IF ( ( recycling_width / dx ) >= nxl .AND. & |
---|
| 1158 | ( recycling_width / dx ) <= nxr ) THEN |
---|
[163] | 1159 | id_recycling_l = myidx |
---|
| 1160 | ELSE |
---|
| 1161 | id_recycling_l = 0 |
---|
| 1162 | ENDIF |
---|
[622] | 1163 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
---|
[163] | 1164 | CALL MPI_ALLREDUCE( id_recycling_l, id_recycling, 1, MPI_INTEGER, MPI_SUM, & |
---|
| 1165 | comm1dx, ierr ) |
---|
| 1166 | |
---|
[809] | 1167 | #elif ! defined ( __parallel ) |
---|
[978] | 1168 | IF ( bc_lr == 'dirichlet/radiation' .OR. bc_lr == 'dirichlet/neumann' ) THEN |
---|
[1] | 1169 | inflow_l = .TRUE. |
---|
| 1170 | outflow_r = .TRUE. |
---|
[978] | 1171 | ELSEIF ( bc_lr == 'radiation/dirichlet' .OR. bc_lr == 'neumann/dirichlet' ) THEN |
---|
[1] | 1172 | outflow_l = .TRUE. |
---|
| 1173 | inflow_r = .TRUE. |
---|
| 1174 | ENDIF |
---|
| 1175 | |
---|
[978] | 1176 | IF ( bc_ns == 'dirichlet/radiation' .OR. bc_ns == 'dirichlet/neumann' ) THEN |
---|
[1] | 1177 | inflow_n = .TRUE. |
---|
| 1178 | outflow_s = .TRUE. |
---|
[978] | 1179 | ELSEIF ( bc_ns == 'radiation/dirichlet' .OR. bc_ns == 'neumann/dirichlet' ) THEN |
---|
[1] | 1180 | outflow_n = .TRUE. |
---|
| 1181 | inflow_s = .TRUE. |
---|
| 1182 | ENDIF |
---|
| 1183 | #endif |
---|
[807] | 1184 | |
---|
[106] | 1185 | ! |
---|
[978] | 1186 | !-- At the inflow or outflow, u or v, respectively, have to be calculated for |
---|
| 1187 | !-- one more grid point. |
---|
| 1188 | IF ( inflow_l .OR. outflow_l ) THEN |
---|
[106] | 1189 | nxlu = nxl + 1 |
---|
| 1190 | ELSE |
---|
| 1191 | nxlu = nxl |
---|
| 1192 | ENDIF |
---|
[978] | 1193 | IF ( inflow_s .OR. outflow_s ) THEN |
---|
[106] | 1194 | nysv = nys + 1 |
---|
| 1195 | ELSE |
---|
| 1196 | nysv = nys |
---|
| 1197 | ENDIF |
---|
[1] | 1198 | |
---|
| 1199 | IF ( psolver == 'poisfft_hybrid' ) THEN |
---|
| 1200 | CALL poisfft_hybrid_ini |
---|
[75] | 1201 | ELSEIF ( psolver == 'poisfft' ) THEN |
---|
[1] | 1202 | CALL poisfft_init |
---|
| 1203 | ENDIF |
---|
| 1204 | |
---|
[114] | 1205 | ! |
---|
| 1206 | !-- Allocate wall flag arrays used in the multigrid solver |
---|
| 1207 | IF ( psolver == 'multigrid' ) THEN |
---|
| 1208 | |
---|
| 1209 | DO i = maximum_grid_level, 1, -1 |
---|
| 1210 | |
---|
| 1211 | SELECT CASE ( i ) |
---|
| 1212 | |
---|
| 1213 | CASE ( 1 ) |
---|
| 1214 | ALLOCATE( wall_flags_1(nzb:nzt_mg(i)+1, & |
---|
| 1215 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
| 1216 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
| 1217 | |
---|
| 1218 | CASE ( 2 ) |
---|
| 1219 | ALLOCATE( wall_flags_2(nzb:nzt_mg(i)+1, & |
---|
| 1220 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
| 1221 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
| 1222 | |
---|
| 1223 | CASE ( 3 ) |
---|
| 1224 | ALLOCATE( wall_flags_3(nzb:nzt_mg(i)+1, & |
---|
| 1225 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
| 1226 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
| 1227 | |
---|
| 1228 | CASE ( 4 ) |
---|
| 1229 | ALLOCATE( wall_flags_4(nzb:nzt_mg(i)+1, & |
---|
| 1230 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
| 1231 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
| 1232 | |
---|
| 1233 | CASE ( 5 ) |
---|
| 1234 | ALLOCATE( wall_flags_5(nzb:nzt_mg(i)+1, & |
---|
| 1235 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
| 1236 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
| 1237 | |
---|
| 1238 | CASE ( 6 ) |
---|
| 1239 | ALLOCATE( wall_flags_6(nzb:nzt_mg(i)+1, & |
---|
| 1240 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
| 1241 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
| 1242 | |
---|
| 1243 | CASE ( 7 ) |
---|
| 1244 | ALLOCATE( wall_flags_7(nzb:nzt_mg(i)+1, & |
---|
| 1245 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
| 1246 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
| 1247 | |
---|
| 1248 | CASE ( 8 ) |
---|
| 1249 | ALLOCATE( wall_flags_8(nzb:nzt_mg(i)+1, & |
---|
| 1250 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
| 1251 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
| 1252 | |
---|
| 1253 | CASE ( 9 ) |
---|
| 1254 | ALLOCATE( wall_flags_9(nzb:nzt_mg(i)+1, & |
---|
| 1255 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
| 1256 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
| 1257 | |
---|
| 1258 | CASE ( 10 ) |
---|
| 1259 | ALLOCATE( wall_flags_10(nzb:nzt_mg(i)+1, & |
---|
| 1260 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
| 1261 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
| 1262 | |
---|
| 1263 | CASE DEFAULT |
---|
[254] | 1264 | message_string = 'more than 10 multigrid levels' |
---|
| 1265 | CALL message( 'init_pegrid', 'PA0238', 1, 2, 0, 6, 0 ) |
---|
[114] | 1266 | |
---|
| 1267 | END SELECT |
---|
| 1268 | |
---|
| 1269 | ENDDO |
---|
| 1270 | |
---|
| 1271 | ENDIF |
---|
| 1272 | |
---|
[759] | 1273 | ! |
---|
| 1274 | !-- Calculate the number of groups into which parallel I/O is split. |
---|
| 1275 | !-- The default for files which are opened by all PEs (or where each |
---|
| 1276 | !-- PE opens his own independent file) is, that all PEs are doing input/output |
---|
| 1277 | !-- in parallel at the same time. This might cause performance or even more |
---|
| 1278 | !-- severe problems depending on the configuration of the underlying file |
---|
| 1279 | !-- system. |
---|
| 1280 | !-- First, set the default: |
---|
| 1281 | IF ( maximum_parallel_io_streams == -1 .OR. & |
---|
| 1282 | maximum_parallel_io_streams > numprocs ) THEN |
---|
| 1283 | maximum_parallel_io_streams = numprocs |
---|
| 1284 | ENDIF |
---|
| 1285 | |
---|
| 1286 | ! |
---|
| 1287 | !-- Now calculate the number of io_blocks and the io_group to which the |
---|
| 1288 | !-- respective PE belongs. I/O of the groups is done in serial, but in parallel |
---|
| 1289 | !-- for all PEs belonging to the same group. A preliminary setting with myid |
---|
| 1290 | !-- based on MPI_COMM_WORLD has been done in parin. |
---|
| 1291 | io_blocks = numprocs / maximum_parallel_io_streams |
---|
| 1292 | io_group = MOD( myid+1, io_blocks ) |
---|
| 1293 | |
---|
| 1294 | |
---|
[1] | 1295 | END SUBROUTINE init_pegrid |
---|