i used mpiexec with checkpoint and created two checkpoint files:

mpiexec -ckpointlib blcr -ckpoint-prefix /home/john/ckpts/app.ckpoint  -ckpoint-interval 4  -n 4  /home/john/app/md

context-num0-0-0
context-num1-0-0


i am trying to make a restart
mpiexec -ckpointlib blcr -ckpoint-prefix /home/john/ckpts/app.ckpoint -n 4 -ckpoint-num 1

but nothing happened it just hangs

i also tried:
mpiexec -ckpointlib blcr -ckpoint-prefix /home/john/ckpts/app.ckpoint -n 4 -ckpoint-num 0-0-0
also hangs