[SCore-users] Score limitations?

[kameyama at pccluster.org]

In article <1032301235.1944.81.camel at stan.cfdlab.mcgill.ca> Amik St-Cyr CFD Lab <amik at cfdlab.mcgill.ca> wrotes:
> (not yet fully functional) Beowulf.
> We have a 128 nodes(dual) cluster connected with both a myrinet2k 
> switch and an ethernet 100MB network.
> 	The only problem (yet) is that when I try a very simple 
> program the scrun/mpirun hangs forever when the number of
> nodes used is greater then 64.
...
> Do you folks think that:
> 
> 1)the problem is myrinet2k related ?

Please check Total test by scstest.
Please look at
    http://www.pccluster.org/score/dist/score/html/en/installation/pm-testmyrinet.html

> 2)the driver for the myrinet switch has a problem ?
>    we are using:
> 	/* PM/Myrinet */
> 	myrinet2k   type=myrinet2k \
> 		    -firmware:file=/opt/score/share/lanai/lanaiM2k.mcp \
> 		    -config:file=/opt/score/etc/pm-myrinet.conf

scoreboard setting seems to good.
Please check pm-myrinet.conf.

If you want to check of node 65,
you can use pmini and pmtest.
Please look at PM/Myrinet test page:
    http://www.pccluster.org/score/dist/score/html/en/installation/pm-testmyrinet.html

                       from Kameyama Toyohisa