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Category: Support
Forum: Website Support
Thread: World Community Grid's Floating-Point Operations Per Second |
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Thread Status: Active Total posts in this thread: 13
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WMCheerman
Cruncher Joined: Nov 20, 2009 Post Count: 13 Status: Offline Project Badges: 
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Hello, everyone this has been driving me crazy for some time what is the average floating-point operations per second for WCG. Based on the over 700 million points the last few days we are producing around 500 Teraflops, if you use WCG formal of 1,400,000 equal to 1 teraflops. However, in a recent article that WCG has shared about TB it states that WCG in the “top 10” of supercomputer. Some websites such as AllProjectstats shows WCG around a petaFlops, while there RAC number indicates a number closer to the 500 teraflop. Other sites such as BAM indicate closer to 485 Teraflops. In another thread SekeRob posted a link to his charts which indicated a number closer to that petaflop amount. If that is the case, which I hope it is, how was that calculated so I could do future calculations on my own.
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knreed
Former World Community Grid Tech Joined: Nov 8, 2004 Post Count: 4504 Status: Offline Project Badges: 
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You should take any estimate of the power of WCG with a pretty significant grain of salt.
----------------------------------------The origins of any estimate derive from this page: http://boinc.berkeley.edu/wiki/Computation_credit Our "Points" that you find on our statistics pages are 7 times a BOINC credit. Using that conversion, you get an computing power of 517 TFlops averaged over the past 7 days. However, at some point further back in history the BOINC website used a conversion of 100,000 instead of 200,000 so you will sometimes see 1034 Tflops/1 PFlop for our estimated power. However, if you look across all BOINC projects, different computers get different credit at different projects so that conversion is certainly suspect. Secondly, something that should be considered is the amount of computing power that is being usefully applied. The Top 500 list is based on a specific set of tests run to compute the theoretical max power that the computing system can provide when running at 100% capability. In reality super computers don't run at 100% usage nor do they have something running on them 100% of the time so their actual delivered computing power is less than the number reported on the Top 500 list. With BOINC based projects, using the method above (which I will re-iterate is something that should be considered suspect), it is taking the actual delivered computing power that has been applied and using that to measure the computing power of the grid. That means that it is not an apples to apples comparison. So people can take that formula from the BOINC website and calculate a TFlops or PFlops number for it, but it is up to you to decide what it really means and how that compares to the values on the Top 500 list. [Edit 3 times, last edit by knreed at May 5, 2016 5:34:38 PM] |
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SekeRob
Master Cruncher Joined: Jan 7, 2013 Post Count: 2741 Status: Offline |
Bag of salt you better take! From Credit_Old to credit_new WCG only step changed by just over 20%, whereas the gold-standard SETI doubled with their own Dr.Anderson CN, the reason the divisor got doubled in the Wiki to get to the reference Cobblestone. It's very evident in what I view as the submarine chart [right top inset of the WCGFPY1 chart], where there's a small step change a little before the subs' turret pokes up [where the GPGPU project ran], to drop back. https://bit.ly/WCGFPY1 , hence I stick to using 700,000 to arrive at the TFL.
BTW visit the AllProjects Compare X-Project page, where you see that per computing second, WCG is below 0.4 as fraction of SETI, for hundreds of computers that participate in both WCG+SETI... figure that. |
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knreed
Former World Community Grid Tech Joined: Nov 8, 2004 Post Count: 4504 Status: Offline Project Badges:
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Thanks for the reminder about why the divisor was changed. So for as far as it goes, using 700,000 as the divisor for our points to yield TFLOPs is the right way to do it.
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WMCheerman
Cruncher Joined: Nov 20, 2009 Post Count: 13 Status: Offline Project Badges:
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Thanks for the reminder about why the divisor was changed. So for as far as it goes, using 700,000 as the divisor for our points to yield TFLOPs is the right way to do it. Is the faq section going to be updated to reflect this change? |
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SekeRob
Master Cruncher Joined: Jan 7, 2013 Post Count: 2741 Status: Offline |
Not a question I was going to ask, as I just understand how it works [it does not, at all, this Credit_New system] ;O)
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knreed
Former World Community Grid Tech Joined: Nov 8, 2004 Post Count: 4504 Status: Offline Project Badges:
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Done.
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SekeRob
Master Cruncher Joined: Jan 7, 2013 Post Count: 2741 Status: Offline |
As of this moment the Help item (still) reads
----------------------------------------"Therefore, your total World Community Grid points divided by 1,400 gives you the number of GigaFLOPs and your World Community Grid points divided by 1,400,000 gives you the number of TeraFLOPs." Maybe it needs a new website build to for the change to show through? [Edit 1 times, last edit by SekeRob* at May 17, 2016 7:07:26 AM] |
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ErikaT
Former World Community Grid Admin USA Joined: Apr 27, 2009 Post Count: 912 Status: Offline Project Badges: 
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As of this moment the Help item (still) reads Hi Rob,"Therefore, your total World Community Grid points divided by 1,400 gives you the number of GigaFLOPs and your World Community Grid points divided by 1,400,000 gives you the number of TeraFLOPs." Maybe it needs a new website build to for the change to show through? Currently the FAQ reads: 'Therefore, your total World Community Grid points divided by 700 gives you the number of GigaFLOPs and your World Community Grid points divided by 700,000 gives you the number of TeraFLOPs.' Maybe you need to clear your cache? ErikaT |
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SekeRob
Master Cruncher Joined: Jan 7, 2013 Post Count: 2741 Status: Offline |
ErikaT, no I don't, becauuuuse the cache (plus cookies) gets cleared for me, each time I exit the browser. Case in point, Ctrl+Shft+P opens a clean, cacheless Private session, and it still says as of this moment...
How do I calculate my FLOPS (Floating Point Operations Per Second) based off my World Community Grid points? BOINC provides a reference about credit and its relation to FLOPS here. However, you should know that seven (7) World Community Grid points are equal to one (1) BOINC credit. Therefore, your total World Community Grid points divided by 1,400 gives you the number of GigaFLOPs and your World Community Grid points divided by 1,400,000 gives you the number of TeraFLOPs. Display similar help items Something maybe that needs headed into the cloud or removed from. See: https://secure.worldcommunitygrid.org/help/viewSearch.do?searchString=flops BTW, I've noticed this before, where a 'searched' result produces a different outcome than direct links such as #505 where I see the 700K now... 2 copies seem to exist at least, one stale. Cloud freshness is something not too successful, not only at IBM. One report claimed that > 60% of the processing time in the cloud is actually occupied with re-arranging data on and on and on. |
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