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* [Bug libgomp/42828] New: OpenMP executes unreliably when used in pthread.
@ 2010-01-21 15:35 jos dot de_laender at telenet dot be
2010-01-21 15:35 ` [Bug libgomp/42828] " jos dot de_laender at telenet dot be
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: jos dot de_laender at telenet dot be @ 2010-01-21 15:35 UTC (permalink / raw)
To: gcc-bugs
Background :
-OpenMP started from a pthread doesn't work for regular mingw. This has been
reported in http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616 and is confirmed.
For that reason I switched to http://sourceforge.net/projects/mingw-w64/ which
has the advantage of working TLS.
My test case runs much better and further now. But it crashes 1 out of 5 times
on my machine while cleaning up threads (gomp_free_thread).
Some elementary analysis points very much in some weakness in the gomp_barrier
for mingw. I'm tending to conclude that because :
- adding some short Sleep() before the end of free_gomp_pool_helper makes it
rocksolid.
- It is rocksolid as well on Linux. I noticed that the barrier is implemented
differentl there.
--
Summary: OpenMP executes unreliably when used in pthread.
Product: gcc
Version: 4.4.2
Status: UNCONFIRMED
Severity: blocker
Priority: P3
Component: libgomp
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jos dot de_laender at telenet dot be
GCC host triplet: i686-pc-mingw32
GCC target triplet: mingw64 - see description.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42828
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libgomp/42828] OpenMP executes unreliably when used in pthread.
2010-01-21 15:35 [Bug libgomp/42828] New: OpenMP executes unreliably when used in pthread jos dot de_laender at telenet dot be
@ 2010-01-21 15:35 ` jos dot de_laender at telenet dot be
2010-01-21 15:37 ` paolo dot carlini at oracle dot com
2010-06-11 8:36 ` iains at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: jos dot de_laender at telenet dot be @ 2010-01-21 15:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from jos dot de_laender at telenet dot be 2010-01-21 15:35 -------
Created an attachment (id=19680)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19680&action=view)
The test case.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42828
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libgomp/42828] OpenMP executes unreliably when used in pthread.
2010-01-21 15:35 [Bug libgomp/42828] New: OpenMP executes unreliably when used in pthread jos dot de_laender at telenet dot be
2010-01-21 15:35 ` [Bug libgomp/42828] " jos dot de_laender at telenet dot be
@ 2010-01-21 15:37 ` paolo dot carlini at oracle dot com
2010-06-11 8:36 ` iains at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: paolo dot carlini at oracle dot com @ 2010-01-21 15:37 UTC (permalink / raw)
To: gcc-bugs
--
paolo dot carlini at oracle dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|blocker |normal
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42828
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libgomp/42828] OpenMP executes unreliably when used in pthread.
2010-01-21 15:35 [Bug libgomp/42828] New: OpenMP executes unreliably when used in pthread jos dot de_laender at telenet dot be
2010-01-21 15:35 ` [Bug libgomp/42828] " jos dot de_laender at telenet dot be
2010-01-21 15:37 ` paolo dot carlini at oracle dot com
@ 2010-06-11 8:36 ` iains at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: iains at gcc dot gnu dot org @ 2010-06-11 8:36 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from iains at gcc dot gnu dot org 2010-06-11 08:36 -------
is this now fixed?
in 4.5 after r160526,
and trunk after r160457
which should have made the detection of emulated TLS more reliable.
--
iains at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |iains at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42828
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-06-11 8:36 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2010-01-21 15:35 [Bug libgomp/42828] New: OpenMP executes unreliably when used in pthread jos dot de_laender at telenet dot be
2010-01-21 15:35 ` [Bug libgomp/42828] " jos dot de_laender at telenet dot be
2010-01-21 15:37 ` paolo dot carlini at oracle dot com
2010-06-11 8:36 ` iains at gcc dot gnu dot org
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