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* [Bug libgomp/97331] New: [nvptx] Provide GCN_NUM_TEAMS/GCN_NUM_THREADS equivalent
@ 2020-10-08  8:40 vries at gcc dot gnu.org
  2020-10-08  8:50 ` [Bug libgomp/97331] " jakub at gcc dot gnu.org
  0 siblings, 1 reply; 2+ messages in thread
From: vries at gcc dot gnu.org @ 2020-10-08  8:40 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97331

            Bug ID: 97331
           Summary: [nvptx] Provide GCN_NUM_TEAMS/GCN_NUM_THREADS
                    equivalent
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: libgomp
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org
                CC: jakub at gcc dot gnu.org
  Target Milestone: ---

When looking at the gcn plugin, there are a number of environment variables
that set/limit launch dimensions:
...
$ grep getenv libgomp/plugin/plugin-gcn.c | grep NUM
  const char *x = secure_getenv ("GCN_NUM_TEAMS");
    x = secure_getenv ("GCN_NUM_GANGS");
  const char *z = secure_getenv ("GCN_NUM_THREADS");
    z = secure_getenv ("GCN_NUM_WORKERS");
...

It would be nice to have similar ones for nvptx.

^ permalink raw reply	[flat|nested] 2+ messages in thread
* [Bug libgomp/97331] [nvptx] Provide GCN_NUM_TEAMS/GCN_NUM_THREADS equivalent
  2020-10-08  8:40 [Bug libgomp/97331] New: [nvptx] Provide GCN_NUM_TEAMS/GCN_NUM_THREADS equivalent vries at gcc dot gnu.org
@ 2020-10-08  8:50 ` jakub at gcc dot gnu.org
  0 siblings, 0 replies; 2+ messages in thread
From: jakub at gcc dot gnu.org @ 2020-10-08  8:50 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97331

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The OpenMP 5.1 way is OMP_{NUM_THREADS,...}_DEV_{0,1,2,...} etc., but we aren't
there yet.

^ permalink raw reply	[flat|nested] 2+ messages in thread
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2020-10-08  8:40 [Bug libgomp/97331] New: [nvptx] Provide GCN_NUM_TEAMS/GCN_NUM_THREADS equivalent vries at gcc dot gnu.org
2020-10-08  8:50 ` [Bug libgomp/97331] " jakub at gcc dot gnu.org

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