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Parallel Firefly with many processors.

Ian Dunn
iansdunn@gmail.com


I am trying to perform a parallel Firefly calculation on one multicore node with 2 sockets, each with 12 physical cores and 24 virtual cores.  I have a file called procgrp in my directory containing the single line "local N" where I input a positive integer in the place of N.  I run Firefly via

firefly820 -p4pg procgrp -b /path/to/AHLRICHS.LIB

When I run Firefly with N > 32, the job runs successfully, however, for N=32 the job immediately crashes with:

   p4_error: latest msg from perror: Identifier removed
p32_24774:  p4_error: OOPS: semop lock failed: -1
   p4_error: latest msg from perror: Identifier removed
p15_24757:  p4_error: OOPS: semop lock failed: -1

and when I run with N > 32 the job immediately crashes with:

p0_24836:  p4_error: more slaves than msg queues
: 33

What do I need to do to run a Firefly calculation that takes advantage of all 48 threads on my node?


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