On Thu, Nov 11, 2010 at 12:36, Number Cruncher <email@example.com> wrote:
Yes, of course. That's how the bug in Open MPI was originally detected. Of course you can't do production runs with valgrind.
Are you using an Intel Nehalem-class CPU?
No, Core 2 Duo and Opteron (but the Opterons still have older glibc). Reverse memcpy must only be turned on for Nehalem.