Storing entire process state on disk and restoring it later? (On Linux/Unix)

Question

I would like to know: Is there a system call, library, kernel module or command line tool I can use to store the complete state of a running program on the disk?

Answer 1

You should take a look at the BLCR project from Berkeley Lab. This is widely used by several MPI implementations to provide Checkpoint / Restart capabilities for parallel applications.