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LINCS warning followed by an Early WU End message is an indication that progress of a Work Unit was terminated due to Simulation Instability. Following log entries show this message:


[01:20:01] Completed 132000 out of 200000 steps (66)
[01:20:05] + Writing 'sec_per_frame = 1050.500000' to config
[01:20:05] + Working ...Timered checkpoint triggered.
[01:43:59] Quit 101 - Fatal error:
[01:43:59] Step 133288, time 266.576 (ps) LINCS WARNING

[01:43:59] relative constraint deviation after LINCS:
[01:43:59] max 0.000464 (between atoms 70341 and 70343) rms 0.000007
[01:43:59]
[01:43:59] Simulation instability has been encountered. The run has entered a
[01:43:59] state from which no further progress can be made.

[01:43:59] If you often see other project units terminating early like this
[01:43:59] too, you may wish to check the stability of your computer (issues
[01:43:59] such as high temperature, overclocking, etc.).
[01:43:59] Going to send back what have done.
[01:43:59] logfile size: 76172
[01:43:59] - Writing 76858 bytes of core data to disk...
[01:43:59] ... Done.
[01:43:59]
[01:43:59] Folding@home Core Shutdown: EARLY_UNIT_END
[01:44:04] CoreStatus = 72 (114)
[01:44:04] Sending work to server

[01:44:04] + Attempting to send results
[01:44:04] - Reading file work/wuresults_02.dat from core
[01:44:04] (Read 76858 bytes from disk)
[01:44:09] - Uploaded at ~15 kB/s
[01:44:09] - Averaged speed for that direction ~36 kB/s
[01:44:09] + Results successfully sent
[01:44:09] Thank you for your contribution to Folding@Home.


In this case a WU ended early, however partial results were sent to Stanford for partial credit.

This happens due to bad work units as Larry the weatherman explains this thread: /forum/remark,11699582~mode=flat


Expand got feedback?

by pervez8 See Profile edited by nozero See Profile
last modified: 2005-08-07 17:38:04