From: Julian Brown <julian@codesourcery.com>
To: <gcc-patches@gcc.gnu.org>
Cc: Thomas Schwinge <thomas_schwinge@mentor.com>,
Jakub Jelinek <jakub@redhat.com>,
Chung-Lin Tang <cltang@codesourcery.com>
Subject: [PATCH 0/4] openacc: Async fixes
Date: Tue, 29 Jun 2021 16:42:00 -0700 [thread overview]
Message-ID: <cover.1624987598.git.julian@codesourcery.com> (raw)
This patch series contains fixes for various problems with async support
for OpenACC at present:
- Asynchonous host-to-device copies invoked from within libgomp
(target.c) could copy bad data to the target -- and the workaround
for that currently used in the AMD GCN target plugin could lead to
a different problem (a race condition).
- The OpenACC profiling-interface implementation did not measure
asynchronous operations properly.
- Several test cases misuse OpenACC asynchronous support (more race
conditions).
Further comments on individual patches. Tested with offloading to AMD
GCN. OK for mainline?
Thanks,
Julian
Julian Brown (4):
openacc: Async fix for lib-94 testcase
openacc: Fix async bugs in several OpenACC test cases
openacc: Fix asynchronous host-to-device copies in libgomp runtime
openacc: Profiling-interface fixes for asynchronous operations
libgomp/libgomp.h | 2 +-
libgomp/oacc-host.c | 5 +-
libgomp/oacc-mem.c | 36 +++-
libgomp/oacc-parallel.c | 190 ++++++++++++++----
libgomp/plugin/plugin-gcn.c | 20 +-
libgomp/target.c | 111 ++++++----
.../acc_prof-init-1.c | 5 +-
.../acc_prof-parallel-1.c | 64 ++----
.../libgomp.oacc-c-c++-common/deep-copy-10.c | 14 +-
.../libgomp.oacc-c-c++-common/lib-94.c | 4 +-
.../libgomp.oacc-fortran/lib-16-2.f90 | 5 +
.../testsuite/libgomp.oacc-fortran/lib-16.f90 | 5 +
12 files changed, 289 insertions(+), 172 deletions(-)
--
2.29.2
next reply other threads:[~2021-06-29 23:42 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-29 23:42 Julian Brown [this message]
2021-06-29 23:42 ` [PATCH 1/4] openacc: Async fix for lib-94 testcase Julian Brown
2021-06-29 23:42 ` [PATCH 2/4] openacc: Fix async bugs in several OpenACC test cases Julian Brown
2021-06-29 23:52 ` Julian Brown
2021-06-29 23:42 ` [PATCH 3/4] openacc: Fix asynchronous host-to-device copies in libgomp runtime Julian Brown
2021-07-27 10:01 ` Thomas Schwinge
2023-03-10 15:22 ` Allow libgomp 'cbuf' buffering with OpenACC 'async' for 'ephemeral' data (was: [PATCH 3/4] openacc: Fix asynchronous host-to-device copies in libgomp runtime) Thomas Schwinge
2021-06-29 23:42 ` [PATCH 4/4] openacc: Profiling-interface fixes for asynchronous operations Julian Brown
2021-06-30 8:28 ` [PATCH 0/4] openacc: Async fixes Thomas Schwinge
2021-06-30 10:40 ` Julian Brown
2021-07-02 13:51 ` Julian Brown
2023-03-10 11:38 ` Thomas Schwinge
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