On May 21, 2008, at 4:37 PM, Brian W. Barrett wrote:
ptmalloc2 is not *required* by the openib btl. But it is required on
Linux if you want to use the mpi_leave_pinned functionality. I see
one function call to __pthread_initialize in the ptmalloc2 code -- it
*looks* like it's a function of glibc, but I don't know for sure.
There's actually more than that, it's just buried a bit. There's a
whole
bunch of thread-specific data stuff, which is wrapped so that
different
thread packages can be used (although OMPI only supports pthreads).
The
wrappers are in ptmalloc2/sysdeps/pthreads.
Doh! I didn't "grep -r"; my bad...
--
Jeff Squyres
Cisco Systems
