I have prepared a patch I would like to commit which adds to code to actually checkpoint a process. Thanks for the pointers about the string variables I tried to do implement it correctly.
CRIU currently has problems with the new OOB usock but I will contact the CRIU developers about this error. Using tcp, checkpointing works. CRIU also has problems with --np > 1, but I am sure this can also be resolved. The patch is at: https://lisas.de/git/?p=open-mpi.git;a=commitdiff;h=89c9c27c87598706e8f798f84fe9520ee5884492 Adrian
