Sinawava (Jan 20 2009)


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Message boards : Technical News : Sinawava (Jan 20 2009)

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Profile Matt Lebofsky
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Message 855811 - Posted: 20 Jan 2009, 22:58:04 UTC
Last modified: 20 Jan 2009, 22:58:17 UTC

Welcome back from another long weekend - we had MLK Day off yesterday, and the whole country has been running a little late this morning. Things went mostly well in server land. The astropulse validator was (still) choking on various results so the backlog grew and thus the workunit storage filled up again for a minute there. That means the splitters halted, and we ran low on work to send out for half a day. Other than that, no major events.

Today we began the final stages of the secondary science database shuffle. We were a bit disappointed by the results at first, and did some more reconfiguration/testing before learning to not trust the output of iostat so much as the other evidence that shows we may have improved our peak science db throughput by 10x. Well maybe not so much - we'll see - if it's 2x I'll be psyched. More work tomorrow on that (the secondary is still catching up from being offline for 5+ days).

A followup on a recent story about our Overland Storage servers. I recently mentioned we hit an unexpected 4 TB file system limit on our workunit storage server (gowron). Turns out we actually hit a physical extent limit, and this will be fixed in the latest OS release. This is really just an academic point - we could only grow to 4.25 TB max anyway, given the number of drives. Thanks again to Overland for continued support.

- Matt
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Message 855813 - Posted: 20 Jan 2009, 22:59:25 UTC

Thanks Matt!
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Richard HaselgroveProject donor
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Message 855987 - Posted: 21 Jan 2009, 15:05:21 UTC

Matt,

Not really your department, but it appears that last night's CUDA v6.08 release was borked - people in Number Crunching are reporting checksum errors.

Could you pass it on to the CUDA committee, please?

Profile Matt Lebofsky
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Message 856032 - Posted: 21 Jan 2009, 17:45:25 UTC - in response to Message 855987.

Passed the warnings along - thanks. Not sure what happened there.

- Matt

Not really your department, but it appears that last night's CUDA v6.08 release was borked - people in Number Crunching are reporting checksum errors.

Could you pass it on to the CUDA committee, please?


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Message 856033 - Posted: 21 Jan 2009, 17:47:44 UTC - in response to Message 856032.

Thanks Matt
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Message boards : Technical News : Sinawava (Jan 20 2009)

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