[Nek5000-users] problem with running nek5000 on supercomputers

[nek5000-users at lists.mcs.anl.gov]

Hi Neks,

I am trying to run my simulation with nek5000 on supercomputers, the size
of the problem is something like:

 text	   data	    bss	    dec	    hex	filename
2233955	 187412	2554984280	2557405647	986ee9cf	nek5000

I don't have any problem when I use 32~64 CPUs to run parallel on
supercomputers, but once I go for more than 64 CPUs, I always get
"allocation failed" error. I have tried to run on different supercomputer
like as Gordon SDSC, OSC, TACC, but I got the same type of error each time.
I have checked the active memories, it seems for each of them memories have
large unused portion. Does any one have any idea why when I increase the
number of CPUs I get this allocation error?!

Thank you,
Ami
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