[Beowulf] non-stop computing

[Luc Vereecken]

Hi Michael,

Keep us informed if you pull that off... I'm interested in that 
functionality as well, for similar reasons.

For what it's worth, on the torque mailing list I remember that somebody 
had a script for instantiating and destroying a VM on job start/end. 
Can't remember who or what, but it's worth checking out the mailing 
archives for that (sorry, rushing at the moment so no time to do it).

cheers,
Luc



On 10/27/2016 5:15 PM, Michael Di Domenico wrote:
> On Thu, Oct 27, 2016 at 10:54 AM, Justin Y. Shi <shi at temple.edu> wrote:
>> Snapshot restart would only work for you if your application leaves
>> restarting points on the disk. Otherwise restarting the snapshot is the same
>> as restarting the program.
>
> the program does not checkpoint to disk.
>
> my cursory look through the kvm manual seemed to instigate that the
> qcow2 image also snaps the memory into the image.  i can't argue the
> point one way or the other though.
>
> the functionality that I hope exists is; pause a VM (cpu/memory/disk),
> save it all off into a file, then some point later resume the saved
> off image exactly where it was paused like nothing happened
>
> whether it works that way or not, i can't say, that's what i was going to test.
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