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| author | Cesar Philippidis <cesar@codesourcery.com> | 2018-08-13 05:04:24 -0700 |
|---|---|---|
| committer | Tom de Vries <vries@gcc.gnu.org> | 2018-08-13 12:04:24 +0000 |
| commit | bd9b3d3d1a8d33e460ae137da0cb0d5a919e8f8f (patch) | |
| tree | 0729abf2a8dd6b64d2d8313c3c16b16b428c15ab /libgomp/plugin/cuda-lib.def | |
| parent | cdf899781c7321987a9948e5ca0847e8b38da798 (diff) | |
| download | gcc-bd9b3d3d1a8d33e460ae137da0cb0d5a919e8f8f.zip gcc-bd9b3d3d1a8d33e460ae137da0cb0d5a919e8f8f.tar.gz gcc-bd9b3d3d1a8d33e460ae137da0cb0d5a919e8f8f.tar.bz2 | |
[nvptx] Use CUDA driver API to select default runtime launch geometry
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
Diffstat (limited to 'libgomp/plugin/cuda-lib.def')
| -rw-r--r-- | libgomp/plugin/cuda-lib.def | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libgomp/plugin/cuda-lib.def b/libgomp/plugin/cuda-lib.def index 29028b5..b2a4c21 100644 --- a/libgomp/plugin/cuda-lib.def +++ b/libgomp/plugin/cuda-lib.def @@ -41,6 +41,7 @@ CUDA_ONE_CALL (cuModuleGetGlobal) CUDA_ONE_CALL (cuModuleLoad) CUDA_ONE_CALL (cuModuleLoadData) CUDA_ONE_CALL (cuModuleUnload) +CUDA_ONE_CALL_MAYBE_NULL (cuOccupancyMaxPotentialBlockSize) CUDA_ONE_CALL (cuStreamCreate) CUDA_ONE_CALL (cuStreamDestroy) CUDA_ONE_CALL (cuStreamQuery) |