rm -f a.out
gcc \
  -I/home/snoweye/work-my/local/ompi/include \
  -DMPI2 -DOPENMPI  -I/usr/local/include   -fpic  -g -O2 \
  a.c \
  -L/usr/local/lib \
  -L/home/snoweye/work-my/local/ompi/lib -lmpi -lutil -lpthread

mpiexec -np 2 a.out
echo "-------"
mpiexec -np 2 Rscript a.r
echo "-------"
mpiexec -np 2 a.out : -np 2 Rscript a.r
