On Mar 20, 2009, at 5:59 AM, Ricardo Fernández-Perea wrote:
> Hello,
>
> I am running DL_POLY in various Xserver 8 processor with a myrinet
> network.using mx-1.2.7
>
> While I keep in the same node the process scales reasonably well but
> in the moment I hit the network ...
>
> I will like to try to maximize the mx network before trying to
> touch the program code.
Have you run mx_pingpong between the nodes to determine what raw
performance you are getting?
For each pair of machines, run:
Host foo:
$ mx_pingpong -s
Host bar:
$ mx_pingpong -d foo -S 0 -E 5000000 -M 2
where "-d foo" means the MX hostname of foo. It could be foo or foo:0
(or foo:1 if you have two NICs, etc.).
See http://www.myri.com/serve/cache/455.html for more details.
Repeat the above after setting MX_RCACHE=1 on both hosts.
Scott
> Is there some place where I can check what the mca params really
> means?
> Can anyone give me a hint where it would be better to look to
> optimize OMPI1.3 for macosx?
>
> Thanks
>
> Ricardo
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