Changes between Version 5 and Version 6 of doc/tec/gpu

Timestamp:

Mar 10, 2013 3:18:25 AM (12 years ago)

Author:

raasch

Comment:

--

doc/tec/gpu

@@ -5 +5 @@
 * cyclic lateral boundary conditions
 * no humidity / cloud physics
-* no topography
+* no canopy model
 * no Lagrangian particle model
 
@@ -23 +23 @@
 /home/raasch/current_version/JOBS/gputest/INPUT/gputest_p3d
 }}}
-Please note that {{{loop_optimization = 'acc'}}} and {{{fft_method = 'system-specific'}}} have to be set. Results of tests are stored in the respective {{{MONITORING}}} directory.
+Please note that {{{loop_optimization = 'acc'}}}, {{{psolver = 'poisfft'}}}, and {{{fft_method = 'system-specific'}}} have to be set. Results of tests are stored in the respective {{{MONITORING}}} directory.
 
 '''Report on current activities:'''
@@ -37 +37 @@
 Pressure solver (including the tridiagonal solver) has been almost completely ported. Still missing are calculations in pres. \\
 CUDA fft has been implemented. \\
-GPU can also been used in the single-core (non-MPI-parallel) version. 
+GPU can also been used in the single-core (non-MPI-parallel) version.
+
+r1113 \\
+In single-core mode, lateral boundary conditions completely run on device. Most loops in {{{pres}}} ported. Vertical boundary conditions ({{{boundary_conds}}}) ported.
 
 '''Results for 512x512x64 grid (time in micro-s per gridpoint and timestep):''' \\
@@ -47 +50 @@
 '''Next steps:'''
 
-* testing the newest PGI 13.2 compiler version, porting of reduction operations (especially in flow_statistics), check the capability of parallel regions
-* update ghost boundaries only, overlapping of update/MPI and computation
-* remove host/device data transfer for the single-core version, still required for the cyclic boundary conditions, in order to run the code completely on one GPU
+* testing the newest PGI 13.2 compiler version, porting of reduction operations ({{{timestep}}}, {{{flow_statistics}}}, divergence in {{{pres}}}), check the capability of parallel regions (can IF-constructs be removed from inner loops?)
+* for MPI mode update ghost boundaries only, overlapping of update/MPI-transfer and computation
 * overlapping communication in pressure solver (alltoall operations)
 * porting of remaining things (averaging, I/O, etc.)