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Old 2016-01-21, 02:52   #12
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Also, I've never observed crossovers above 100 digits when comparing against asm64 versions of ggnfs. 96-97 digits is actually doing better than previously on this thread.
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Old 2016-01-21, 07:45   #13
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96-97 is around what tune() came up with on my Sandy Bridge oh so many years ago.
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Old 2016-01-21, 16:58   #14
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Same for my Ivy Bridge very recently.
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Old 2016-01-22, 03:33   #15
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For my laptop Intel(R) Core(TM) i3-2310M CPU @ 2.10GHz,WIN64: 104.847
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Old 2016-01-22, 13:12   #16
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Quote:
Originally Posted by richs View Post
For my laptop Intel(R) Core(TM) i3-2310M CPU @ 2.10GHz,WIN64: 104.847
This CPU has a slower clock rate than the others. The memory also is probably slow compared with the others(1333Mhz).
It is also hyperthreaded.
Does yafu use the hyperthreads for nfs? AFAIK the ggnfs sievers get a fair speedup with it. This might be more pronounced with the newer cpus. I suspect the reason is potentially something to do with the asm routines being written for core2 and needing to be updated.
It is interesting why yours is so different.

Last fiddled with by henryzz on 2016-01-22 at 13:13
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Old 2016-01-22, 14:01   #17
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For the tune() program, YAFU uses only 1 thread, so I doubt (unless you were running a full load otherwise) hyperthreading should matter much.
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Old 2016-01-22, 19:12   #18
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Quote:
Originally Posted by henryzz View Post
This CPU has a slower clock rate than the others. The memory also is probably slow compared with the others(1333Mhz).
It is also hyperthreaded.
Does yafu use the hyperthreads for nfs? AFAIK the ggnfs sievers get a fair speedup with it. This might be more pronounced with the newer cpus. I suspect the reason is potentially something to do with the asm routines being written for core2 and needing to be updated.
It is interesting why yours is so different.
Usually, this difference is from accidentally running the old 32-bit sievers, rather than the 64-bit ones posted here a year or two ago. That halving of speed is consistent with 104-cutoff, I think...
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Old 2016-01-22, 20:43   #19
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Are the 64 bit windows sievers asm enabled like the Linux ones?
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Old 2016-01-22, 22:11   #20
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Yep! They function identically to the linux sievers.
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Old 2016-01-23, 04:05   #21
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My laptop is about 5-1/2 years old.

I am using ggnfs svn413 win64 bit core2 binaries downloaded from ??? (I can't remember where I got them). If anyone has a download link for a more recent svn, please advise.

I re-ran tune and got the crossover 104.469, very close to my original value.
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Old 2016-01-23, 04:10   #22
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Quote:
Originally Posted by richs View Post
My laptop is about 5-1/2 years old.
Perhaps you mean 4.5 years? The 2310M was only released in February of 2011.
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