Job scheduling:
I am assuming that High Priority will still exist for those tasks that may
have difficulty being returned on time at the indicated resource fraction.
Estimated Credit:
If there are two GPUs with very different characteristics, but both of the
same type, would they be counted separately? It is my belief that they
should be as it is entirely possible that there is a large speed factor
between 2 GPUs installed in the same system.
jm7
David Anderson
<[email protected]
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Subject
[boinc_dev] proposed scheduling
10/26/2010 05:13 policy changes
PM
Experiments with the client simulator using Richard's scenario
made it clear that the current scheduling framework
(based on STD and LTD for separate processor types) is fatally flawed:
it may divide resources among projects in a way that makes no sense
and doesn't respect resource shares.
In particular, resource shares, as some have already pointed out,
should apply to total work (as measured by credit)
rather than to individual processor types.
If two projects have equal resource shares,
they should ideally have equal RAC,
even if that means that one of them gets 100% of a particular processor
type.
I think it's possible to do this,
although there are difficulties due to delayed credit granting.
I wrote up a design for this:
http://boinc.berkeley.edu/trac/wiki/ClientSchedOctTen
Comments are welcome.
BTW, the new mechanisms would be significantly simpler than the old ones.
This is always a good sign.
-- David
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