Mutual-Aid: Diskless Checkpointing Scheme for Tolerating Double Faults

Tolerating double faults is an important issue for diskless checkpointing due to the size and increase of the executing time. This is why Mutual-Aid checkpointing has become the first scheme to achieve the goal. Mutual-aid checkpointing combines the advantages of neighbor-based, with parity-based diskless approaches. This also tolerates all double processor faults by bitwising exclusive-or snapshots from its neighbor processors in its virtual assistant ring. In view of the fact that checkpointing and recovery of mutual-aid are so simple and efficient, this increases the performance, reduces application running time, and allows more frequent checkpoints. Moreover, it could be employed towards a very largescale and high performance computing field because of its distributed methods as well as localized operations. The degree of fault tolerance has achieved higher success than other schemes.