Re: [Condor-devel] Condor 7.6.1 timeline?

[Erik Erlandson <eerlands@xxxxxxxxxx>]

On Sat, 2011-05-21 at 14:04 -0500, Brian Bockelman wrote:


> How do subgroups take precedence over parents?  The part of our
> solution I'm least happy with is the handling of the US folks as a
> subgroup of global CMS.

Consider something like:

GROUP_QUOTA_cms_users = 500
GROUP_QUOTA_DYNAMIC_cms_users.us = 1.0
GROUP_QUOTA_DYNAMIC_cms_users.us.neb = 1.0
GROUP_ACCEPT_SURPLUS = TRUE

With that configuration, "cms_users.us.neb" is guaranteed all 500 slots
(if asked for) and may be given all the surplus, up to whatever
resources are requested.

However, if "cms_users.us.neb" needs less than all 500, and/or less than
all the surplus from other groups, the remainder can be used by
"cms_users.us", and likewise "cms_users" if any is left over after that.

An alternative configuration that guarantees no group will absolutely
starve would be:

GROUP_QUOTA_cms_users = 500
GROUP_QUOTA_DYNAMIC_cms_users.us = 0.95
GROUP_QUOTA_DYNAMIC_cms_users.us.neb = 0.95
GROUP_ACCEPT_SURPLUS = TRUE

That reserves 500(0.05) slots for cms_users, and 500(0.95)(0.05) slots
for cms_users.us, reserving 500(0.95)(0.95) slots for cms_users.us.neb

Or something similar with static quotas:

GROUP_QUOTA_cms_users = 500
GROUP_QUOTA_cms_users.us = 490
GROUP_QUOTA_cms_users.us.neb = 480
GROUP_ACCEPT_SURPLUS = TRUE