LHC Computer Grid - Rollout
> [mailto:[log in to unmask]] On Behalf Of Mario David said:
> but your answer should have been the other way around
> that is, the RB SHOULD support such thing
> is it in some wish list for the new RB of gLite???
> as far as I know from the 10K Cpus in LCG
> about half are empty (in average) in any given time
> so why has some user have to have his jobs queued
> if there are free CPU's available??
The broker doesn't really support anything - or else it supports
everything! The values in the information system are exposed to the
user, who gets to choose what to put in the Rank and Requirements. The
default Rank is the EstimatedResponseTime, which in theory should mean
that jobs go to empty sites first. However, as people have mentioned the
new information providers have a poor calculation of the ERT which will
mean that the job distribution will also be poor unless people rank on
something else.
Stephen
|