[Beowulf] Increasing memory size in Opteron,NACONA,Itanium

Dan Kidger daniel.kidger at quadrics.com
Thu Dec 30 10:11:31 EST 2004


Rajiiv,

On Wednesday 29 December 2004 3:08 am, Rajiv wrote:
> Dear All,
>     I would like to increase the memory size for benchmarking larger order
> matrices for LINPACK. I could do this by setting the environment variable
> P4_GLOBMEMSIZE in IA32 machines. What is the equivalent in Opteron,NACONA,
> and Itanium machines.

the 'P4' in P4_GLOBMEMSIZE refers to a driver model for MPI called 'P4'. It is 
nothing to do with the Pentium4

I suspect that for Opteron/Nocona and IA64 for that matter you do not need to 
set this variable at all.

Daniel.

--------------------------------------------------------------
Dr. Dan Kidger, Quadrics Ltd.      daniel.kidger at quadrics.com
One Bridewell St., Bristol, BS1 2AA, UK         0117 915 5505
----------------------- www.quadrics.com --------------------




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