Ignore:
Timestamp:
Dec 10, 2010 8:08:13 AM (11 years ago)
Author:
raasch
Message:

New:
---

Optional barriers included in order to speed up collective operations
MPI_ALLTOALL and MPI_ALLREDUCE. This feature is controlled with new initial
parameter collective_wait. Default is .FALSE, but .TRUE. on SGI-type
systems. (advec_particles, advec_s_bc, buoyancy, check_for_restart,
cpu_statistics, data_output_2d, data_output_ptseries, flow_statistics,
global_min_max, inflow_turbulence, init_3d_model, init_particles, init_pegrid,
init_slope, parin, pres, poismg, set_particle_attributes, timestep,
read_var_list, user_statistics, write_compressed, write_var_list)

Adjustments for Kyushu Univ. (lcrte, ibmku). Concerning hybrid
(MPI/openMP) runs, the number of openMP threads per MPI tasks can now
be given as an argument to mrun-option -O. (mbuild, mrun, subjob)

Changed:


Initialization of the module command changed for SGI-ICE/lcsgi (mbuild, subjob)

Errors:


File:
1 edited

Legend:

Unmodified
Added
Removed
  • palm/trunk/SOURCE/global_min_max.f90

    r484 r622  
    55! Current revisions:
    66! -----------------
    7 !
     7! optional barriers included in order to speed up collective operations
    88!
    99! Former revisions:
     
    6161#if defined( __parallel )
    6262       fmin_l(2)  = myid
     63       IF ( collective_wait )  CALL MPI_BARRIER( comm2d, ierr )
    6364       CALL MPI_ALLREDUCE( fmin_l, fmin, 1, MPI_2REAL, MPI_MINLOC, comm2d, ierr )
    6465
     
    100101#if defined( __parallel )
    101102       fmax_l(2)  = myid
     103       IF ( collective_wait )  CALL MPI_BARRIER( comm2d, ierr )
    102104       CALL MPI_ALLREDUCE( fmax_l, fmax, 1, MPI_2REAL, MPI_MAXLOC, comm2d, ierr )
    103105
     
    158160#if defined( __parallel )
    159161       fmax_l(2)  = myid
     162       IF ( collective_wait )  CALL MPI_BARRIER( comm2d, ierr )
    160163       CALL MPI_ALLREDUCE( fmax_l, fmax, 1, MPI_2REAL, MPI_MAXLOC, comm2d, &
    161164                           ierr )
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