[mpich-discuss] hydra_pmi_proxy using 100% CPU

[Pavan Balaji]

On 01/21/2011 09:17 AM, Colin Hercus wrote:
> OK, I'm pretty much sorted, MPI job is running about 99% (times 4
> servers) vs non MPI single server version even with IO to stdout. I

Great. Though, my recommendation to use MPI-IO still stands.

> tried ch3:nem and it was 2% slower than sock.  I'm using multi-threaded
> slaves with processor affinity, it's about 5% faster than single
> threaded slaves.

That's surprising. ch3:nemesis should always be faster than ch3:sock as 
long as you don't have more threads/processes than the available number 
of cores.

  -- Pavan

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji