Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!rice!sun-spots-request
From: loki@physicsa.mcgill.ca (Loki Jorgenson Rm421)
Newsgroups: comp.sys.sun
Subject: restarting processes from cores
Message-ID: <8902210056.AA05151@frodo.physicsa.mcgill.ca>
Date: 2 Mar 89 02:07:42 GMT
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Original-Date: Mon, 20 Feb 89 19:56:25 EST
X-Sun-Spots-Digest: Volume 7, Issue 177, message 7 of 20

Okay, interpid readers.... have we tried this one?

Can a process be deliberately halted and a core dumped (kill -3 PID for
instance) such that it can be later restarted ?  We run lengthy
simulations here which I would like to be able to stop, reboot the machine
and then restart.  Is there a way besides building it into the program
itself?

Along the same lines, I would like to stop a process running on a 3/50 and
restart it on a different 3/50 or a 3/180 (running v3.5).

Loki Jorgenson			node:  loki@physicsa.mcgill.ca
Physics, McGill University	fax:   (514) 398-3733
Montreal Quebec CANADA		phone: (514) 398-6531

[[ In fact, we have discussed this one.  But it's been awhile.  See volume
6 issue 68.  It mentions a library called "chkpt" by Dave Curry, but he
implies that it only works on 4.3BSD VAXen.  It's an interesting problem.
I don't think it can be solved without some co-operation from the program.
That co-operation could be as simple as linking against an extra library
which "shadows" certain system calls.  --wnl ]]