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Old 2010-09-23, 21:51   #1
Joe O
 
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Default Leapfrog time!

http://www.mersenneforum.org/showthr...137#post231137
LLR V3.8.2 using gwnum 26.2 is available!
OK PFGW, it's your turn!
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Old 2010-09-23, 22:19   #2
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Quote:
Originally Posted by Joe O View Post
http://www.mersenneforum.org/showthr...137#post231137
LLR V3.8.2 using gwnum 26.2 is available!
OK PFGW, it's your turn!
It's close and I have a 64-bit version pending, but it is not ready for prime time yet. George told me about problems with some FFT sizes that will be fixed in v26.3, so it will probably be released with that version of gwnum.
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Old 2010-09-24, 23:41   #3
Joe O
 
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Round off problem fixed on Windows binaries!
http://www.mersenneforum.org/showthr...307#post231307

I recommend we wait for PFGW. If you have downloaded LLR 3.8.2 for Windows, you must download it again. The round off problem mentioned above, applies to our tests.
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Old 2010-09-25, 21:25   #4
Joe O
 
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Default PFGW 3.4.0 Released

http://www.mersenneforum.org/showthread.php?t=13969

I would like to urge some caution in adopting this new release since there are so many changes. Perhaps we could start out with timing benchmarks?
32 bit PFGW 3.4.0 vs 32 bit pfgw_win_3.3.6_20100907 timings and 32 bit PFGW 3.4.0 vs 64 bit PFGW 3.4.0 timings comparing the residuals as well. Let's use 71492*5^378851+1 as our test test <G>.

Last fiddled with by Joe O on 2010-09-25 at 21:29
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Old 2010-09-26, 16:55   #5
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Here some results from an i7-920 and windows7-64.

V336 used a zero padded FFT 96K.
V34 used a all-complex Core2 type-1 FFT length 80K in 32 and 64 bit.

All residues were identical.

Runtimes:

V336: 2293 seconds
V34 64Bit: 2078 seconds
V34 32Bit: 1863 seconds

So at least on my system the 64bit version is significant slower then the 32bit version of pfgw 3.4.
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Old 2010-10-22, 19:40   #6
Joe O
 
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Default PFGW 3.4.2 Released

You can download the latest release for Windows, MacIntel, and Linux from here: http://sourceforge.net/projects/openpfgw/
I'd like to see some timings for this release vs prior releases using 71492*5^378851+1 as our test test. I would also like to see some people test it in their normal work and report their findings. So far, I am pleased with it and have found no problems.

Ok LLR, it's your turn.
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Old 2010-10-22, 20:09   #7
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Quote:
Originally Posted by Joe O View Post
You can download the latest release for Windows, MacIntel, and Linux from here: http://sourceforge.net/projects/openpfgw/
I'd like to see some timings for this release vs prior releases using 71492*5^378851+1 as our test test. I would also like to see some people test it in their normal work and report their findings. So far, I am pleased with it and have found no problems.

Ok LLR, it's your turn.
FYI, as I understand it PFGW 3.4.2 should be the exact same speed as 3.4.1 for most people. By that same token, LLR 3.8.2 should be no slower than the (assumedly) forthcoming 3.8.3 based on the same gwnum version as PFGW 3.4.2.

The only speedup I've observed/heard of going from PFGW 3.4.1>3.4.2 is on my own Core 2 Duo, which had a mysterious unexplained sluggishness on 3.4.0 and 3.4.1. It was totally unreproducible by anyone else; it would appear to be a very, very isolated issue and it doesn't even affect LLR or Prime95 at all. I suspect it is merely one of the many crazy issues I've run into on this particular computer since its Windows installation is kind of messed up.
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Old 2010-10-26, 14:38   #8
Joe O
 
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Default LLR 3.8.4 dev. version is available for testing!

Available at http://jpenne.free.fr/Development/

Jean Penne made the announcement here.
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Old 2011-01-22, 16:44   #9
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http://www.mersenneforum.org/showthr...382#post248382

Jean Penne has made a change to LLR V3.8.4. Please refetch your binaries, and or source.
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