Kernel-Level Checkpointing

Some operating systems provide checkpointing support inside the operating system kernel. No preparations in the application programs and no relinking of the application is necessary in this case. Kernel-level checkpointing usually applies to single processes as well as to complete process hierarchies. A hierarchy of interdependent processes can be checkpointed and restarted at any time. Usually both a user command and a C library interface are available to initiate a checkpoint.

The grid engine system supports operating system checkpointing if available. See the release notes for the N1 Grid Engine 6.1 software for information about the currently supported kernel-level checkpointing facilities.