[BProc] dual processor slowness

[Luke P. <lop...@wi...>]

Hi everyone,

My cluster is made up of dual Xeon nodes with 2GB memory.  We formerly
ran openMosix, which actually worked quite well other than the one hour
uptimes...  Anyway, we observe that when placing two processes on a
node, they run about half as fast as they would were a single process
placed on a node.  If I look at ps or top, both processes stay at 99.9%
or so, and the load averages stay just shy of 2, but the wall clock
doesn't lie...

I'm running the most recent clustermatic stuff, so nodes and master have
2.4.22-cm36smp kernels over Fedora Core 1.  This didn't used to happen
with openMosix for the exact same executables.  Any ideas of things to
look at?

Thanks
-Luke