Brice, On Thu, Feb 26, 2009 at 4:44 PM, Brice Goglin <brice.gog...@inria.fr> wrote: > stephane eranian wrote: >> The panic message you sent out does not seem to have any perfmon related >> calls in it. >> > > Right, but I have never seen any CPU lockup on a non-perfmon-patched > kernel :) > >> Are you doing actual measurements when this happens and if so what >> kind of measurement? >> > > Running 2 processes doing a MPI pingpong with MPICH2. papiex -aU was > attached to one of them. MPICH2 used vmsplice/readv across a pipe for > transferring data between them in this case. If I switch to MPICH2 using > the usual mmap'ed user-space shared buffered, it seems to work fine. > What if you use pfmon instead of papiex with similar options?
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