cosmomc: running in MPI mode at NCSA/Cobalt

Use of Cobaya. camb, CLASS, cosmomc, compilers, etc.
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Hiranya Peiris
Posts: 54
Joined: September 28 2004
Affiliation: University College London

cosmomc: running in MPI mode at NCSA/Cobalt

Post by Hiranya Peiris » March 22 2007

Hi,

Has anyone run cosmomc in MPI mode in a batch queue on the Cobalt machine at NCSA? I am getting the following weird situation: say I requested N CPUs (i.e. chains). cosmomc seems to know that it should start N chains, and calculates likelihoods etc for N chains. However it only opens ONE chain file (as if it was in serial mode) and writes its output there.

I have never seen this before - I would be very grateful if someone who has this working can post their PBS script.

Thanks!
Hiranya

Hiranya Peiris
Posts: 54
Joined: September 28 2004
Affiliation: University College London

cosmomc: running in MPI mode at NCSA/Cobalt

Post by Hiranya Peiris » March 22 2007

Please ignore, I fixed it.
H

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