====== COSMOMC at CHPC ======

From its [[http://cosmologist.info/cosmomc/|website]]: "CosmoMC is a Fortran-based Markov-Chain Monte-Carlo (MCMC) engine for exploring cosmological parameter space, together with Fortran and python code for analysing Monte-Carlo samples and importance sampling (plus a suite of scripts for building grids of runs, plotting and presenting results). It can also be compiled as a generic sampler without using any cosmology codes."

Contents:
  - [[cosmomc#compiling_cosmomc|Compiling COSMOMC]]
  - [[cosmomc#running_cosmomc|Running COSMOMC]]


===== Compiling COSMOMC =====

NB! COSMOMC is currently being tested on the new cluster. The most recent version currently able to successfully compile (with CFITSIO-3.37.2 and CLIK-1.0) is February 2015.

Paths to ''CFITSIO'' and ''PLC'' (CLIK) can be found under ''/apps/chpc/astro/utils/intel/v16-openmpi188/'', along with that for ''GSL'' if required.

The Intel 2016 modules to add to your environment are ''chpc/parallel_studio_xe/16.0.1/2016.1.150'' and ''chpc/openmpi/1.8.8/intel-16.0.1''

My ''.bashrc'' file is equipped with the following:
<code bash>
export cfitsio=/apps/chpc/astro/utils/intel/v16-openmpi188/cfitsio-3.37.2-build
export PLANCKLIKE=cliklike
export CLIKPATH=/apps/chpc/astro/utils/intel/v16-openmpi188/plc-1.0
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$CLIKPATH/lib
export LD_LIBRARY_PATH=/apps/chpc/astro/utils/intel/v16-openmpi188/cfitsio-3.37.2-build/lib:$LD_LIBRARY_PATH
</code>

===== Running COSMOMC =====
Under construction.