mpiexec -n 2 ./h5ff_client_M6.2_demo -v >& output
grep M6.2 output > demooutput
sed s/^.*M6/M6/ < demooutput > demooutput1
mv demooutput1 demooutput
grep r0: demooutput > rank0output
grep r1: demooutput > rank1output