Panic Mode On (114) Server Problems?

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Profile Brent Norman Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
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Message 1980132 - Posted: 13 Feb 2019, 17:04:47 UTC - in response to Message 1980124.  

I wouldn't blame the scheduler exactly for having problem with multiple WU types. More that its decision time for allocating tasks increases under high server loads causes timeouts - http or data reads.

Also it seems to have a load watchdog, where as now, it likes to only give 1 task at a time per computer thread for downloads. Likely due to too many dropped calls to it.
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Profile Tom M
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Message 1980143 - Posted: 13 Feb 2019, 18:11:19 UTC

I am currently getting pretty much gpu tasks with very few or no cpu tasks.

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Message 1980147 - Posted: 13 Feb 2019, 18:46:46 UTC - in response to Message 1980143.  

I am currently getting pretty much gpu tasks with very few or no cpu tasks.

Pretty much normal.
Indulging in our favorite guessing game, I'm guessing that if you request both GPU and CPU work, it will class the work as GPU unless it can give you enough to fill the GPU cache and get a start on CPU's needs. At least, that seems to be what I consistently see here. Would only make sense.
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Message 1980160 - Posted: 13 Feb 2019, 20:13:39 UTC - in response to Message 1980132.  

I wouldn't blame the scheduler exactly for having problem with multiple WU types. More that its decision time for allocating tasks increases under high server loads causes timeouts - http or data reads.

Also it seems to have a load watchdog, where as now, it likes to only give 1 task at a time per computer thread for downloads. Likely due to too many dropped calls to it.

I remember not too long ago seeing return rates upward of 180-190k per hour during an Overflow storm. This was with Full services running, i.e. Scheduler, Uploads and Downloads with the only problem being the splitters couldn't keep up. Recent problems have happened with a Much lower Return Rate and even though the Scheduler and Download services were Stopped once the problem began. Once the Problem begins Most of the Server Load Stops, but the problem persists. Big difference there. Past test show No problem with High Server Loads as long as there is just One Type of Task in the Cache. Past tests show the problem only happens when more than One type of task is in the cache. Those tests are why we are now running Arecibo VLARs on the GPUs, the problem started when the Arecibo splitting began.
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Message 1980169 - Posted: 13 Feb 2019, 21:45:55 UTC

BOINC is temporarily shut down for maintenance. Please try again later.

DA must have been inspired by yesterday's outrage here.
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Message 1980242 - Posted: 14 Feb 2019, 6:18:27 UTC

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Message boards : Number crunching : Panic Mode On (114) Server Problems?


 
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