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On 10/01/12 21:30, John Gordon wrote: > WLCG would still like to remove LCG-CE from the availability > calculation. If anyone still has problems with CREAM running on Grid > Engine (or anything else) please be prepared to express during the GDB > tomorrow (Wednesday), or at least tell me before lunchtime. > > If there are no objections (from anyone, not just you lot) then the > opportunity will be taken to use the CREAM only availability calculation > for January, thus keeping 2012 consistent. > I still have problems, but on balance don't actually object to this proposal. Firstly, SL4 support ends next month anyway[1], and secondly, cream is just about working well enough for the WLCG VOs. The problems we have had are twofold. Firstly, under load, CREAM didn't seem to keep up - though it's better now with various tuning tricks. Secondly, t2k jobs coming in via a cream CE caused our queues to enter an error state. I suspect this is t2k exploring the parts of our middleware other VOs don't reach. As an interim measure, I enabled t2k only on our LCG-CE. I wasn't able to replicate the problem in the small amount of time I've had to look at it, so disabled that queue. Chris [1] http://www.scientificlinux.org/distributions