On 05/01/2022 13:04, Tom de Vries wrote:
On 1/5/22 12:08, Tom de Vries wrote:
The allocators-1.c test-case doesn't compile because:
...
FAIL: libgomp.c/allocators-1.c (test for excess errors)
Excess errors:
/home/vries/oacc/trunk/source-gcc/libgomp/testsuite/libgomp.c/allocators-1.c:7:22:
sorry, unimplemented: ' ' clause on 'requires' directive not
supported yet
UNRESOLVED: libgomp.c/allocators-1.c compilation failed to produce
executable
...
So, I suppose I need "[PATCH] OpenMP front-end: allow requires
dynamic_allocators" as well, I'll try again with that applied.
After applying that, I get:
...
WARNING: program timed out.
FAIL: libgomp.c/allocators-2.c execution test
WARNING: program timed out.
FAIL: libgomp.c/allocators-3.c execution test
...
It works for me.....
Those tests are doing some large number of allocations repeatedly and in
parallel to stress the atomics. They're also slightly longer running
than the other tests.
- allocators-2 calls omp_alloc 8080 times, over 16 kernel launches,
some of which will fall back to PTX malloc.
- allocators-3 calls omp_alloc and omp_free 8 million times each,
over 8 kernel launches, and takes about a minute to run on my device
(whether that falls back depends entirely on how the free calls interleave).
Either there is a flaw in the concurrency causing some kind of deadlock,
or else your timeout is set too short for your device. I hope it's the
latter. We may need to tweak this.
Andrew
