CosmoCoffee

Posted: **February 22 2018**

When trying to make CosmoMC, I get the error

/mkdir -p ReleaseMPI
mpif90 -f90=ifort -mkl -openmp -03 -no-prec-div -fpp -qopenmp -xHost -DMPI -DCLIK -module ReleaseMPI -IReleaseMPI/ -c constants.f90 -o ReleaseMPI/constants.o
make&#91;2&#93;&#58; mpif90&#58; No such file or directory
make&#91;2&#93;&#58; *** &#91;ReleaseMPI/constants.o&#93; Error 1
make&#91;1&#93;&#58; *** &#91;camb&#93; Error 2
make&#58; *** &#91;cosmomc&#93; Error 2

It is similar to the error here: https://stackoverflow.com/questions/446 ... -directory.

I followed the link given in the answer ( http://www.owsiak.org/running-open-mpi-on-macos/ ) to get OpenMPI(3.0.0) running on my mac, but it doesn't seem to fix this. Any help is much appreciated.

Posted: **February 23 2018**

If you are running on a cluster, sometimes changing versions of compilers will fix these issues. Also you dont want to run CosmoMC on a personal Machine.

Hope this helps
Nishanth

Posted: **February 23 2018**

Thank you, Nishanth. What is the issue with running CosmoMC on a personal machine?

Posted: **February 23 2018**

CosmoMC runs a MCMC with large set of parameters, this requires multiple processor core. Even if you have cosmomc working on your laptop, at the end of the day, you need a cluster to run multiple chains(walkers) and get convergence for your parameters.

Hope this helps
Nishanth

Posted: **February 24 2018**

I see. Thank you!

CosmoCoffee

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