Memory required for unbinned Planck runs

Use of Cobaya. camb, CLASS, cosmomc, compilers, etc.
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Dhiraj Kumar Hazra
Posts: 17
Joined: March 31 2009
Affiliation: PCCP, APC, Paris

Memory required for unbinned Planck runs

Post by Dhiraj Kumar Hazra » January 29 2016

Hello,

Is there an estimate about how much memory/node one needs to run unbinned Planck runs with cosmomc?

I checked that for 8 nodes binned Planck-TTTEEE-lowTEB takes more than 8 GB to run.

One more question : Is the plik_dx11dr2_HM_v18_TTTEEE.ini file is fine to run with plik_dx11dr2_HM_v18_TTTEEE_bin1.clik ? I checked that the readme lists same set of nuisance params.

Thanks ,
Dhiraj

Antony Lewis
Posts: 1941
Joined: September 23 2004
Affiliation: University of Sussex
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Re: Memory required for unbinned Planck runs

Post by Antony Lewis » January 29 2016

I'm not sure what the exact requirements are. But the likelihoods don't need that much memory per instance, though of course if you run lots of MPI instances on the same node it will use proportionally more.

I think the 1bin and binned input files should be compatible.

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