https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109620
Bug ID: 109620
Summary: [OpenMP][Offloading] OMP_CANCELLATION ICV not mapped
to device
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgomp
Assignee: unassigned at gcc dot gnu.org
Reporter: frederik at gcc dot gnu.org
CC: jakub at gcc dot gnu.org
Target Milestone: ---
The value of the OMP_CANCELLATION ICV does not get copied to offloading
devices.
I have tested it by running the following test code both with nvptx and amgdcn
offloading as a part of the libgomp testsuite:
/* { dg-set-target-env-var OMP_CANCELLATION "true" } */
#include <omp.h>
int
main ()
{
__builtin_printf("OMP_CANCELLATION on host: %d\n",
omp_get_cancellation ());
#pragma omp target
{
__builtin_printf("OMP_CANCELLATION on device: %d\n",
omp_get_cancellation ());
}
return 0;
}
In both cases, the output was:
OMP_CANCELLATION on host: 1
OMP_CANCELLATION on device: 0
Does libgomp copy global ICVs to the device environment at all?
I did not find any tests that use cancellation in "target" regions. I think
there is no way for a user to enable it if the ICV is not forwarded.
But would it be supported in principle?
