[mvapich-discuss] Intel compiler 12.1.0 20110811 and ptmalloc2 in mvapich2

[Dhabaleswar Panda]

Hi Doug,

Thanks for giving a heads-up here. Glad to know that this issue is
resolved with the latest version of the compiler.

Thanks,

DK


On Mon, 21 Nov 2011, Doug Johnson wrote:

> Hi,
>
> Just a heads-up to everyone, I've encountered a problem when compiling
> mvapich2-1.7 with the Intel compiler suite 12.1.0 20110811.  Code
> linked against the library will crash with a segfault in the ptmalloc2
> malloc implementation.  The problem occurs when mvapich2 is compiled
> with the default optimization level (-O2).  The problem does not occur
> when building with '--disable-fast' and MPICH2LIB_CFLAGS="-O0".
>
> This can be easily reproduced outside of mvapich2 by downloading
> ptmalloc2 from http://www.malloc.de/en, modifying the Makefile with,
>
> CC = icc
> OPT_FLAGS = -g -O2
>
> The segfault occurs during some list management.
>
> The newest version of the compilers, 12.1.0 20111011, does not exhibit
> this problem.
>
> Doug
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