FWIW, I think we imported your patch a while ago. Here it is on the trunk:
https://svn.open-mpi.org/trac/ompi/browser/trunk/opal/mca/memory/linux/malloc.c#L3933 And here it is on v1.6: https://svn.open-mpi.org/trac/ompi/browser/branches/v1.6/opal/mca/memory/linux/malloc.c#L3933 On May 24, 2012, at 2:06 PM, Larry Baker wrote: > Terry, > > What you are seeing is a bug in the vectorizer in the Intel 2011.6.233 > release. We've talked about this before. You should probably remove that > compiler from your system(s). I think the new release of OpenMPI describes > this problem, but does not stop if from occurring. I write a patch for > ptmalloc2/malloc.c for OpenMPI 1.4.3 which automatically adjusts the > optimization level for _int_malloc(), which is where the bug occurs. > > Larry Baker > US Geological Survey > 650-329-5608 > ba...@usgs.gov > > ---------- Start of Patch ---------- > --- opal/mca/memory/ptmalloc2/malloc.c.original 2010-04-13 > 10:30:26.000000000 -0700 > +++ opal/mca/memory/ptmalloc2/malloc.c 2011-11-04 15:01:37.000000000 > -0700 > @@ -2,6 +2,17 @@ > /* Copyright (c) 2010 Cisco Systems, Inc. All rights reserved. > */ > > +/* With Intel Composer XE V12.1.0, release 2011.6.233, any launch */ > +/* fails, even before main(), due to a bug in the vectorizer (see */ > +/* https://svn.open-mpi.org/trac/ompi/changeset/25290). The fix is */ > +/* to disable vectorization by reducing the optimization level to */ > +/* -O1 for _int_malloc(). The only reliable method to identify */ > +/* release 2011.6.233 is the predefined __INTEL_COMPILER_BUILD_DATE */ > +/* macro, which will have the value 20110811 (Linux, Windows, and */ > +/* Mac OS X). (The predefined __INTEL_COMPILER macro is nonsense, */ > +/* 9999, and both the 2011.6.233 and 2011.7.256 releases identify */ > +/* themselves as V12.1.0 from the -v command line option.) */ > + > #define OPAL_DISABLE_ENABLE_MEM_DEBUG 1 > #include "opal_config.h" > > @@ -3945,6 +3956,12 @@ > ------------------------------ malloc ------------------------------ > */ > > +#ifdef __INTEL_COMPILER_BUILD_DATE > +#if __INTEL_COMPILER_BUILD_DATE == 20110811 > +#pragma GCC optimization_level 1 > +#endif > +#endif > + > Void_t* > _int_malloc(mstate av, size_t bytes) > { > ---------- End of Patch ---------- > > On 24 May 2012, at 6:54 AM, TERRY DONTJE wrote: > >> I am seeing several Cart Fortran tests (like MPI_Cart_coords_f) segv in >> opal_memory_ptmalloc2_int_free when OMPI trunk is compiled with icc 12.1.0 >> for 64 bit on linux. Just wondering if anyone has seen anything similar to >> this with a different version of icc. Other non-Intel compilers seem to not >> exhibit this issue. >> >> -- >> Terry D. Dontje | Principal Software Engineer >> Developer Tools Engineering | +1.781.442.2631 >> Oracle - Performance Technologies >> 95 Network Drive, Burlington, MA 01803 >> Email terry.don...@oracle.com >> >> >> >> _______________________________________________ >> devel mailing list >> de...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/devel > > _______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
