Re: [Oscar-devel] C3 API for arbitrary grouping?

Mon, 24 Mar 2003 17:54:36 -0800

Yep... this is what I want to be able to do. The commands I'm suggesting would make the changes in the c3.conf file, and be very handy for scripted use. I could write a code snippet that would do the job and keep the c3.conf format preserved and all, but then I figured that it's not just the Myrinet package that could use the functionality. Which meant to me that maybe you guys would want to add it? An interface like that would also allow some measure of control over c3.conf so some script wouldn't risk messing it up by making a new first (and thus) default entry or something like that....

Now that I think about it more, I should just start by writing a group to ODA, and then OSCAR should automatically update c3.conf with all group definitions found in ODA.
Depends on whether I'm writing this package for 2.2 or 2.3+ I guess. I'm not sure about that yet.

Jeremy

At 08:42 PM 3/24/2003 -0500, Stephen L. Scott wrote:
Jeremy,

This can be done by doing multiple listings (groupings) of your machines
in the c3.conf file.  1st group should be entire cluster as this is the
default selection.  other "clusters" could then be your sub-groups.
usage is then the same as any other cluster - only it will work on the
sub-group (or virtual cluster).

stephen



Jeremy Enos wrote:
>
> Hey-
> A command that would be really useful-
>
> c3_add_group -n <groupname> <member1....n>
> c3_del_group -n <groupname>
>
> I could use this functionality today for grouping GM enabled machines...
> that's why it occurred to me.  Thoughts?
>
>         Jeremy
>
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