mpi: pi_mpi.c mpicc -O2 pi_mpi.c -o pi_mpi upc: pi_upc.c upcc -Wc,-O2 pi_upc.c -o pi_upc runmpi: qsub -lnodes=8 runpi_mpi.sh runupc: qsub -lnodes=8 runupi_upc.sh