memory problem in parallel running "ARMCI DASSERT fail"

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11:17:32 AM PDT - Fri, Nov 2nd 2012
Psd,
Your calculations are likely to be crashing while creating shared memory segments.
If you set the environmental variable ARMCI_DEFAULT_SHMMAX to a value of 2048 (or larger),
you should be able to overcome this problem.
Please keep in mind that
ARMCI_DEFAULT_SHMMAX has to be greater or equal than the kernel parameter kernel.shmmax
(Root can only change kernel.shmmax, therefore you might have to ask the system
administrator to do it).
For example, if the value of kernel.shmmax is 4294967296 as in the example below,
ARMCI_DEFAULT_SHMMAX can be at most 4096 (4294967296=4096*1024*1024)

$ sysctl kernel.shmmax
kernel.shmmax = 4294967296

Cheers, Edo


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