[Info-vax] OpenVMS servers and clusters as a cloud service

[Scott Dorsey]

Stephen Hoffman  <seaohveh at hoffmanlabs.invalid> wrote:
>
>I'd like to see the ability to restart and recover far more widely 
>used.  But what's out there now in OpenVMS?  That's clearly not getting 
>used widely, not viewed as useful, not capable, or whatever.  Which 
>means either developers and project managers have to change their whole 
>approaches here — and sure, like that's going to happen — or the 
>provided APIs and approaches have to be made easier and more 
>transparent and clearer to the developers.  And made easier and more 
>visible and valuable to end-users, for that matter.

VMS has no automatic process checkpointing facility, which is a shame because
it might not be a difficult thing to add to VMS.  Unlike with Unix, most
processes aren't going to have lots of children so just checkpointing a single
process would be possible and then arranging a restart from the last time it
was snapshotted would be likely possible.

That said, I have been writing code since the early 1970s which manually
wrote process status to a checkpoint file to allow manual restarts of long
jobs.  There's no reason not to do it, other than coding time.
--scott

-- 
"C'est un Nagra. C'est suisse, et tres, tres precis."