====== Compiling Nimrod at NERSC ======
Tips for getting nimrod to compile at nersc. Compile on your login node, test and run on compute nodes (see: [[runnersc|Running Jobs at NERSC]])
===== Modules =====
Software that Nimrod needs can easily be used by loading modules. Typically needed: acml, parmetis, superlu_dist

<del>  $ module load superlu_dist
  $ module load parmetis
  $ module load acml
  
  
http://www.nersc.gov/users/software/nersc-user-environment/modules/</del>

Nersc doesn't provide these as individual modules, use
  $ module swap PrgEnv-intel/6.0.3 PrgEnv-gnu
  $ module load cray-tpsl gsl
  
and link superlu, metis, appropriately.
===== Make.inc =====
Make.inc contains machine specific definitions for compiling Nimrod. Examples are in make_includes/ . Look at any nimrod in ~/nimrodCompiled for examples of make.inc used to compile at NERSC. Go through your make.inc file and make sure everything looks sane before compiling. Default compilers on hopper are PGI.

  F90= ftn
  CC = cc

Environment variables can be used for various math libs: 
  SLUD_LIB = $(NIMHOME)/externals/lib$(SLU_LINK).a $(SUPERLU_DIST) $(PARMETIS)

===== Notes for Specific Nimrod Versions =====
=== Cone ===


Make sure to load GSL module.
Switch to gnu compilers (gfortran). Use local_linux.f for local.f
   $ module load acml parmetis superlu_dist superlu gsl
   $ module swap PrgEnv-pgi PrgEnv-gnu
   $ rm local.f && ln -s local_linux.f local.f
   

=== NIMWSI-bootcamp / NIMWSI-Edison / NIMWSI-cori ===

Switch to gnu compilers (gfortran).
Compile superlu, superlu-dist, metis manually and link the SOFTWARE_PATH in make.inc
Compile nimsetvn and nimset-mod as well
   $ module swap PrgEnv-pgi PrgEnv-gnu
   $ make
   $ cd nimsetvn && make && cd ..
   $ cd nimset-mod && make && cd ..

===== More Information =====
http://www.nersc.gov/users/computational-systems/cori/programming/compiling-codes-on-cori/