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2.3 Folding Stats and Servers
by Gizmo by Gizmo by Gizmo
by FKrooG2 How do you determine how many points a work unit is worth? Before putting out any new work unit, we benchmark it on a dedicated 2.8GHz Pentium 4 machine with SSE2 disabled (more specifically, as reported by /proc/cpuinfo on linux: vendor_id : GenuineIntel, cpu family : 15, model : 2, model name : Intel(R) Pentium(R) 4 CPU 2.80GHz, stepping : 9, cpu MHz : 2806.438, cache size : 512 KB). This machine runs linux, so all WUs are benchmarked with the linux core. We plug the results of this into the following formula: points = 110 * (daysPerWU) where daysPerWU is the number of days it took to complete the unit. This equation was chosen to match the points for previous Gromacs WUs to the previous point system. The upshot is that Tinker WUs will be worth more than before we set up the new points (i.e. before April 2004).
by Gizmo "I'm still keeping an eye on it, but I've gone from every 6 hours to every 3 hours. If it looks like it's handling that fine, we'll inch our way back to every hour. The bug had to do with the stats processing taking too long and going too frequently. I'm testing this right now." Vijay ------------------------------------ nozero wrote: I'm sorry, I'm not trying to be thick here, honest I'm not. But are you saying that the stats are updated every hour? Yes, Stanford's stats are updated every hour, and if you look at your User stats, here: http://folding.stanford.edu/cgi-bin/userpage?name=nozero you'll see this immediately under the banner, from left to right: nozero Last updated: Fri Oct 31 18:06:31 PST 2003 So it was last updated at 18:06 = 6 PM Pacific Standard Time = 9 PM Eastern Standard, etc. As you can see, it was actually updated at six minutes and 31 seconds after the hour, so the next update will be approximately 19:06:31 PST give or take a couple minutes. Now if the Stats server goes down, that time stamp on the user page will be frozen at the last hourly update that was made before the server went down. Third party stats are a different matter. Most of them update their sites every three hours so they don't overload Stanford's servers. Thus if you were to check my stats now, at extremeoverclocking, you'd find they're being updated, because he updates at 00, 3, 6, 9, 12, 15, 18, 21, and 00 hours, CST. His site takes anywhere from 10 mins to 45 mins to finish the update, because he presents a lot more statistics. http://folding.extremeoverclocking.com/member_overview.php?UserID=56762
by nozero
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