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* [Bug c/26456] New: OpenMP program deadlocks when executed
@ 2006-02-24 14:23 eloranta at jyu dot fi
2006-02-24 14:58 ` [Bug libgomp/26456] " eloranta at jyu dot fi
2006-02-24 15:09 ` pinskia at gcc dot gnu dot org
0 siblings, 2 replies; 3+ messages in thread
From: eloranta at jyu dot fi @ 2006-02-24 14:23 UTC (permalink / raw)
To: gcc-bugs
OpenMP C programs deadlock immediately after starting when OMP_NUM_THREADS is >
1.
For example, the following simple code just hangs:
#include <stdio.h>
main() {
int i;
#pragma omp parallel for private(i)
for (i = 0; i < 100; i++)
printf("Thread = %d.\n", omp_get_thread_num());
}
This occurs on MacOS X 10.4.5 with gcc version:
Using built-in specs.
Target: powerpc-apple-darwin8.4.0
Configured with:
/opt/local/var/db/dports/build/_opt_local_var_db_dports_sources_rsync.rsync.darwinports.org_dpupdate_dports_lang_gcc42/work/gcc-4.2-20060204/configure
--prefix=/opt/local --enable-languages=c,c++,java,objc,fortran
--libdir=/opt/local/lib/gcc42 --includedir=/opt/local/include/gcc42
--infodir=/opt/local/share/info --mandir=/opt/local/share/man
--with-local-prefix=/opt/local --with-system-zlib --disable-nls
--program-suffix=-dp-4.2 --with-gxx-include-dir=/opt/local/include/gcc42/c++/
--with-gmp=/opt/local --with-mpfr=/opt/local --disable-multilib
Thread model: posix
gcc version 4.2.0 20060204 (experimental)
Also it appears that when -fopenmp switch is used, gcc does not automatically
include -lgomp but
this has to be done by hand.
--
Summary: OpenMP program deadlocks when executed
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: eloranta at jyu dot fi
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26456
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug libgomp/26456] OpenMP program deadlocks when executed
2006-02-24 14:23 [Bug c/26456] New: OpenMP program deadlocks when executed eloranta at jyu dot fi
@ 2006-02-24 14:58 ` eloranta at jyu dot fi
2006-02-24 15:09 ` pinskia at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: eloranta at jyu dot fi @ 2006-02-24 14:58 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from eloranta at jyu dot fi 2006-02-24 14:23 -------
Most likely this is just OS X specific bug.
--
eloranta at jyu dot fi changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c |libgomp
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26456
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug libgomp/26456] OpenMP program deadlocks when executed
2006-02-24 14:23 [Bug c/26456] New: OpenMP program deadlocks when executed eloranta at jyu dot fi
2006-02-24 14:58 ` [Bug libgomp/26456] " eloranta at jyu dot fi
@ 2006-02-24 15:09 ` pinskia at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-02-24 15:09 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from pinskia at gcc dot gnu dot org 2006-02-24 15:09 -------
This is Darwin specific.
This is a dup of bug 25978.
*** This bug has been marked as a duplicate of 25978 ***
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26456
^ permalink raw reply [flat|nested] 3+ messages in thread
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2006-02-24 14:23 [Bug c/26456] New: OpenMP program deadlocks when executed eloranta at jyu dot fi
2006-02-24 14:58 ` [Bug libgomp/26456] " eloranta at jyu dot fi
2006-02-24 15:09 ` pinskia at gcc dot gnu dot org
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