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

[Rajiv]

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.

Regards,
Rajiv
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