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Thread Status: Active Total posts in this thread: 53
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Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7846 Status: Recently Active Project Badges:
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SekeRob: What were your runtimes like on the 333 series? Those are the long runners on my Win7-64 boxes. Regrettable none left on the RS pages to look at [if they came through on here]. What is seen of 333 is, runtimes were quite spread too, so can't be sure any few would be fair to use as reference. AD VINA is just 60+% faster on Linux [HCC was too]. I have saved some of the results from that batch. Linux Mint on a 2.66ghz Core2Duo. ClaimedCredit GrantedCredit CpuTime ElapsedTime Name 316.5170583 293.3407653 5.860597134 5.889975071 OET1_0000333_xMBGP-OM_rig_0005_0 346.6147933 427.2911879 7.098791599 7.149091244 OET1_0000333_xMBGP-OM_rig_8371_0 346.6147933 427.2911879 7.098791599 7.149091244 OET1_0000333_xMBGP-OM_rig_8371_0 349.4153866 453.8998828 7.159196854 7.20685482 OET1_0000333_xMBGP-OM_rig_8372_0 349.4153866 453.8998828 7.159196854 7.20685482 OET1_0000333_xMBGP-OM_rig_8372_0 Cheers
Sgt. Joe
*Minnesota Crunchers* |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Thanks for the input.
I confess I have mixed feelings about continuing to run OET. I cannot say that I have read all relevant material regarding performance, efficiency and points; I have found the most relevant information on WCG is scattered across sometimes hundreds of forum posts. Part of why I enjoy crunching is that it allows me to accomplish something useful to humanity while living a schedule that leaves little time for extra research (and sometimes even sleep). So it is impossible to put in the necessary time to get a full understanding. However, I've come to use the points given to tasks for any particular project (alongside SNURK's calculation of my Gflops) as an estimation of the amount of work that is being accomplished compared to power input. With OET1, even within a series like 333, the points being granted per hour of CPU time vary wildly. I am accustomed to the variability in points granted -- but usually within 10% or so, with occasional outliers. On some of the OET tasks, I've gotten really good points for the given machine -- often better than average for other projects. On some tasks on the same modern machine, the points per hour are less than on my oldest 2005-vintage machine. A variation of 70% or more in points boggles. And Snurk's estimation of my Gflops has dropped almost 10 points since I started crunching OET. Examining the results for one of my machines, points granted for one ~11 hour CPU time task were half what they were for another ~11 hour task run the day before. On that same machine, a current task has run just over 12.5 hours of CPU time, and is just shy of 58% complete. As a comparison of VINA as a platform on that machine, FAHV jobs showing estimated computation size of 9159 GFLOPs consistently take just shy of an hour to run. For all four of the currently running OET1's from series 335, the estimation is 22312 GFLOPs, including the one that looks like it will run many more hours. Compounding the problem is that, when a job runs that long, there are now hours between checkpoints that I understand are taken at specific percentage thresholds. Two of the machines are scheduled for a good de-dusting/cleaning this weekend, but I hate to take them down because, at the moment, on just one of them, it would represent 11 hours of lost work. |
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Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7846 Status: Recently Active Project Badges:
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MarkHNC,
----------------------------------------If you are not comfortable crunching OET1, opt out. Nobody will think less of you if you are more comfortable crunching FAAH or anything else you choose. It is nice to try to get the most bang for your buck, but if it causes you a headache, don't. Remember, this is a volunteer effort and whatever your contribution, it is appreciated. Cheers
Sgt. Joe
*Minnesota Crunchers* |
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