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Old 2016-11-07, 05:15   #12
Mark Rose
 
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Quote:
Originally Posted by masser View Post
I think I've settled on:

GPUSievePrimes=87400
GPUSieveSize=128
GPUSieveProcessSize=8

The GhzD/D increased to about 58.6 from 57.6 with the defaults.

Should I try changing any of the other options in the mfaktc.ini file?
There's not much point if you're using GPU sieving.
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Old 2016-11-08, 05:46   #13
LaurV
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@masser: you are doing perfectly! don't pay attention to Gordon, since he found a mersenne prime, nobody can talk to him anymore...
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Old 2016-11-11, 18:37   #14
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Quote:
Originally Posted by masser View Post
Now, I would like to complete the following four tasks:

3. Tune cudalucas for optimal performance

Any help or insights would be greatly appreciated.

I ran "CUDALucas -threadbench 2000 3000 5 10" and I see

fft = 2304K, min time = 21.5020 ms, square: 256, splice: 512

in the output. Does this mean I should change the default Threads setting (Threads=256 128) in CUDALucas.ini to

Threads=256 512

? Again, any help/comments are appreciated.

Last fiddled with by masser on 2016-11-11 at 18:38
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Old 2016-11-11, 20:27   #15
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This page, and the thread in general might be helpful:
http://www.mersenneforum.org/showthr...t=19647&page=4
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Old 2016-11-14, 17:55   #16
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Quote:
Assignment: Factor=134473637,71,72
Running Time: 1h 28m 56.640s
I've never messed with the mfaktc.ini file beyond adjusting the way it prints to the screen. It wrapped to a new line. With all due respect. I can run this same exponent in 27 minutes (GTX-750Ti). Perhaps putting the defaults back and leaving it as is may be in order.
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Old 2016-11-15, 01:01   #17
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storm:
What does your card's timing have to do with his card's performance?
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Old 2016-11-15, 01:55   #18
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Quote:
Originally Posted by VBCurtis View Post
storm:
What does your card's timing have to do with his card's performance?
Nothing at all...
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