Forgot to add the date of my compiler was 2011.10.11 so I wonder if it
might not have this issue you mentioned below. Anyways, I'll keep the
below in mind as I try to run more tests.
thanks,
--td
On 5/24/2012 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 <mailto:ba...@usgs.gov>
---------- Start of Patch ----------
--- opal/mca/memory/ptmalloc2/malloc.c.original2010-04-13
10:30:26.000000000 -0700
+++ opal/mca/memory/ptmalloc2/malloc.c2011-11-04 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 <mailto:terry.don...@oracle.com>
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devel mailing list
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--
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 <mailto:terry.don...@oracle.com>
