The CUDA driver API starting version 6.5 offers a set of runtime functions to calculate several occupancy-related measures, as a replacement for the occupancy calculator spreadsheet. This patch adds a heuristic for default runtime launch geometry, based on the new runtime function cuOccupancyMaxPotentialBlockSize. Build on x86_64 with nvptx accelerator and ran libgomp testsuite. 2018-08-13 Cesar Philippidis <cesar@codesourcery.com> Tom de Vries <tdevries@suse.de> PR target/85590 * plugin/cuda/cuda.h (CUoccupancyB2DSize): New typedef. (cuOccupancyMaxPotentialBlockSize): Declare. * plugin/cuda-lib.def (cuOccupancyMaxPotentialBlockSize): New CUDA_ONE_CALL_MAYBE_NULL. * plugin/plugin-nvptx.c (CUDA_VERSION < 6050): Define CUoccupancyB2DSize and declare cuOccupancyMaxPotentialBlockSize. (nvptx_exec): Use cuOccupancyMaxPotentialBlockSize to set the default num_gangs and num_workers when the driver supports it. Co-Authored-By: Tom de Vries <tdevries@suse.de> From-SVN: r263505 |
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config | ||
plugin | ||
testsuite | ||
ChangeLog | ||
ChangeLog.graphite | ||
Makefile.am | ||
Makefile.in | ||
acinclude.m4 | ||
aclocal.m4 | ||
affinity.c | ||
alloc.c | ||
atomic.c | ||
barrier.c | ||
config.h.in | ||
configure | ||
configure.ac | ||
configure.tgt | ||
critical.c | ||
env.c | ||
error.c | ||
fortran.c | ||
hashtab.h | ||
icv-device.c | ||
icv.c | ||
iter.c | ||
iter_ull.c | ||
libgomp-plugin.c | ||
libgomp-plugin.h | ||
libgomp.h | ||
libgomp.map | ||
libgomp.spec.in | ||
libgomp.texi | ||
libgomp_f.h.in | ||
libgomp_g.h | ||
lock.c | ||
loop.c | ||
loop_ull.c | ||
oacc-async.c | ||
oacc-cuda.c | ||
oacc-host.c | ||
oacc-init.c | ||
oacc-int.h | ||
oacc-mem.c | ||
oacc-parallel.c | ||
oacc-plugin.c | ||
oacc-plugin.h | ||
omp.h.in | ||
omp_lib.f90.in | ||
omp_lib.h.in | ||
openacc.f90 | ||
openacc.h | ||
openacc_lib.h | ||
ordered.c | ||
parallel.c | ||
priority_queue.c | ||
priority_queue.h | ||
sections.c | ||
secure_getenv.h | ||
single.c | ||
splay-tree.c | ||
splay-tree.h | ||
target.c | ||
task.c | ||
taskloop.c | ||
team.c | ||
work.c |