20100801, 01:44  #1 
Aug 2010
2^{3}·73 Posts 
Primegrid > GIMPS?
I've just found this on the GIMPS front page:
Teams 355 Users 46858 CPUs 305642 TFLOP/s 37.669 GHzDays 18834.648 The stats for Primegrid over here: http://boincstats.com/stats/project_graph.php?pr=pg show that Primegrid averages 67.361 TeraFLOPS. Does Primegrid really have more computing power than GIMPS, or does BOINC overestimate the flops for their projects? 
20100801, 02:22  #2  
A Sunny Moo
Aug 2007
USA (GMT5)
79^{2} Posts 
Quote:


20100801, 04:20  #3  
"Richard B. Woods"
Aug 2002
Wisconsin USA
7188_{10} Posts 
Quote:
A recentlyedited sentence on their "Computation credit" page ( http://boinc.berkeley.edu/wiki/Computation_credit ) seems to have at least one obvious error. A look at the revision history suggests that there may be more to it than that. The sentence is: Quote:
However, later on that same page is: Quote:
But, not so fast ... When one consults the Wikipedia article linked from that first quoted sentence, one finds: Quote:
Perhaps someone mistook "1,000 MWIPS" for "1,000 FLOPS". ... and then there's some business about incorporating memory use and storage space into BOINC credits ... 

20100802, 23:00  #4 
Bemusing Prompter
"Danny"
Dec 2002
California
3·769 Posts 
Another thing is that BOINC now has GPU support, which GIMPS doesn't yet have.

20100803, 00:20  #5 
Apr 2009
Venice, Chased by Jaws
79 Posts 
Which is unfortunate. I just got two new video cards last week (one of my systems' onboard GPU has been acting up with video distortions and a rebate offer led me to get two, one for a slower computer to free up resources). Since I don't play games, it's a shame that these powerful cards cannot be put to use towards GIMPS.

20100803, 00:50  #6  
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
2·3·1,453 Posts 
Quote:
See this thread. http://www.mersenneforum.org/showthread.php?t=12827 

20100803, 01:32  #7  
Apr 2009
Venice, Chased by Jaws
79 Posts 
Quote:
Last fiddled with by imwithid on 20100803 at 01:32 

20100803, 02:42  #8 
Bemusing Prompter
"Danny"
Dec 2002
California
903_{16} Posts 
There's actually an effort to write factoring code for OpenCL: http://mersenneforum.org/showthread.php?t=13621
You might want to ask the OP about it. 
20200801, 04:36  #9  
Aug 2010
1001001000_{2} Posts 
Quote:
Primegrid: https://www.boincstats.com/stats/11/project/detail/ 1,900.227 TeraFLOPS Teams  3,199 (416 active) Users  350,860 (3,224 active) GIMPS: https://www.mersenne.org/ 1,306.009 TFLOP/s Teams  1,438 Users  227,053 (Other GIMPS Stats: 2,155,555 CPUs today, 653,004 GHz days today, 630 first prime tests yesterday, 192 verified prime tests yesterday, and 3,163 newly factored exponents yesterday) So it does look like Primegrid is still in the lead, though the percentage of their lead has decreased. 

20200801, 05:22  #10 
Undefined
"The unspeakable one"
Jun 2006
My evil lair
5790_{10} Posts 
All those stats are pointless and useless.
Look for the results. That is all that matters. 
20200801, 07:08  #11 
Aug 2010
2^{3}×73 Posts 
It's useful for comparing like vs. like. As a rough estimate, one month's worth of work in 2010 is approximately the same as one day's worth of work in 2020, which I find to be quite interesting (and expected by the "doubling every ~2 years" statement in Moore's law/observation)

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