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Dunx

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Message 52152 - Posted: 1 Jan 2012, 13:19:07 UTC

Had a few n-body cpu wu's and they all lasted only six seconds...

dunx


Task 58688677

Name nbody-Plum_Embedded_4027393_0
Workunit 44893073
Created 1 Jan 2012 | 11:40:03 UTC
Sent 1 Jan 2012 | 11:40:26 UTC
Received 1 Jan 2012 | 11:42:03 UTC
Server state Over
Outcome Success
Client state Done
Exit status 0 (0x0)
Computer ID 360356
Report deadline 13 Jan 2012 | 11:40:26 UTC
Run time 6.15
CPU time 8.63
Validate state Valid
Credit 0.77
Application version MilkyWay@Home N-Body Simulation v0.84 (mt)
Stderr output

<core_client_version>7.0.2</core_client_version>
<![CDATA[
<stderr_txt>
<search_application> milkyway_nbody 0.84 Windows x86_64 double OpenMP, Crlibm </search_application>
Using OpenMP 7 max threads on a system with 8 processors
<search_likelihood>-1286.982628237925600</search_likelihood>
11:40:26 (3548): called boinc_finish

</stderr_txt>
]]>
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Profilebanditwolf
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Message 52159 - Posted: 1 Jan 2012, 17:26:07 UTC

Yup, a week or two ago someone started new task runs that are short & less credits. Also almost a constant shortage of wus due to the validator clogging up.
Doesn't expecting the unexpected make the unexpected the expected?
If it makes sense, DON'T do it.
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ProfileRobert Pick

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Message 52166 - Posted: 1 Jan 2012, 22:30:57 UTC

Just what is the purpose of these very, very short nbody-plum WU's?
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Dunx

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Message 52168 - Posted: 1 Jan 2012, 22:45:33 UTC

As the day has passed I have got more WU's but is this a test of the new server ?

CPU useage of around six seconds is a bit silly...

dunx
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Brickhead
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Message 52499 - Posted: 14 Jan 2012, 19:40:39 UTC

Is there a limit as to how many simultaneous n-body tasks one host can run or queue? I see only one task downloaded at a time, run for a few seconds, and then all CPU cores are idle for the rest of that minute, repeat.

I can of course use the CPU for something else, but then the resource share - and ultimately running n-body at all - is a moot point.
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Matt Arsenault
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Message 52507 - Posted: 14 Jan 2012, 22:18:13 UTC - in response to Message 52499.  

Is there a limit as to how many simultaneous n-body tasks one host can run or queue?.
There's a limit of 3 tasks / CPU so that's the limit assuming no separation CPU tasks are used.
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Matt Arsenault
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Message 52508 - Posted: 14 Jan 2012, 22:18:32 UTC - in response to Message 52152.  

The number of particles is a bit too small in the current workunits.
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Message boards : Number crunching : Hi I'm back, but n-body tasks run for 6 seconds ?

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