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Message boards :
Number crunching :
Incorrect CPU time calculation
(Message 1525)
Posted 19 Aug 2020 by xii5ku Post: Re CPU times: BOINC is known to have a wrong bookkeeping of CPU time of multithreaded tasks if more than one task is fetched per work request. This problem is well-known over at PrimeGrid. (On the other hand, YAFU's extremely low quota on tasks in progress causes most work request to get you only one new task.) However, it is quite possible that a YAFU-16t with 19 h run time did in fact expend only 29.5 h CPU time. The tasks have significant portions of low parallelism in them. Re credits: Forget credits at YAFU. YAFU uses CreditNew. The highly variable performance profiles of YAFU workunits makes the CreditNew FLOPS estimation algorithm unable to converge for a given host. In other words, the "FU" in "YAFU" among else refers to how YAFU assigns credit. |
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Questions and Answers :
Web site :
Resetting the password
(Message 1512)
Posted 30 May 2020 by xii5ku Post: A friend lost the password by a filesystem corruption. What can he do to restore his YAFU account? |