On Oct 31, 2005, at 12:39 PM, Roland Dreier wrote:
Jeff> However, it's unclear to me exactly what needs to happen --
Jeff> do users both need to "ulimit -l unlimited" (or some large
Jeff> number) *and* set /etc/sysctl.conf values for kernel.shmall
Jeff> and kernel.shmmax to unlimited (or a large number)? Or does
Jeff> performing one of those obviate the need for the other?
I believe the changing the ulimit for locked pages is all that is
needed. Does changing shmall and shmmax have any effect? I thought
those were limits on the total amount of shared memory allowed for the
system, not limits on locked/pinned memory.
Ditto (I thought those were shmem values / didn't think they had any
effect on Open IB). The information that I got was third-hand, which
is why I posted here to ask about it. :-)
I'll remove them from the FAQ entry -- any other comments?
--
{+} Jeff Squyres
{+} The Open MPI Project
{+} http://www.open-mpi.org/
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