<div class="gmail_quote">On Thu, Feb 23, 2012 at 18:53, Nystrom, William D <span dir="ltr"><<a href="mailto:wdn@lanl.gov">wdn@lanl.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="direction:ltr;font-family:Arial;color:#000000;font-size:14pt">Rerunning the CPU case with numactl results in a 25x speedup and log_summary<br>
results that look reasonable to me now.</div></blockquote></div><br><div>What command are you using for this? We usually use the affinity options to mpiexec instead of using numactl/taskset manually. Did you also set a specific memory policy? Which Linux kernel is this?</div>