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

Dan Kidger daniel.kidger at quadrics.com
Thu Dec 30 07:11:31 PST 2004


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.


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