Updating clover.in for 3D
updated pgi compilers source
updated pgi compiler source file
Merge pull request #24 from gihanmudalige/fix/pgi_cleanup

Fix/pgi cleanup
Minor updates to get tests working on ruby
Initial commit, works on poisson
Minor fixes
Works on a single node
Initial MPI
Some fixes, catch-up in MPI
Moving to post-reduction triggered checkpoints
Checkpointing