Automatic Cleanup of Previous Checkpoints

Checkpoint images are large; thus, Intel® MPI Library only keeps the last useful checkpoint by default. The following is an example to keep <N> previous checkpoints. The flag is –ckpoint-preserve <N>. The default value of –ckpoint-preserve is 1 (keep only the last checkpoint).

user@head $ mpiexec.hydra -ckpoint on –ckpoint-preserve <N> -ckpoint-tmp-prefix /ssd/user/ckptdir –ckpoint-prefix /home/user/ckptdir -ckpointlib blcr –n 32 –f hosts /home/user/myapp