[Openmcl-devel] RUN-PROGRAM and memory overcommit

Ron Garret ron at flownet.com
Thu Feb 6 23:36:02 UTC 2014

The other day I got an out-of-memory error on a Linux machine when calling RUN-PROGRAM from a CCL process that was consuming about 75% of the available RAM.  The machine does not have a swap partition, and /proc/sys/vm/overcommit_memory was set to 0.

According to:


this error could be avoided by spawning the child process with vfork instead of fork.

Before submitting a ticket I thought I would ask: is there a reason that run-program uses fork instead of vfork?


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