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Old 2020-11-05, 01:48   #12
ryanp
 
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Originally Posted by bbb120 View Post
I have one personal computer ,Windows 7 operating system ,but works slowly , so
I want to know what kind of hardware helps Ryan Propper to get that 83digits factor
I honestly don't even remember at this point what type of machine found that factor. Even if I did, that hardware has almost certainly been obsoleted by modern stuff. These days, Skylake/Cascadelake machines with either GMP-ECM (linked with GWNUM library) or AVX-ECM are pretty efficient for testing b^n +/- 1 numbers.

Last fiddled with by ryanp on 2020-11-05 at 01:50
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Old 2020-11-05, 01:51   #13
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Originally Posted by Xyzzy View Post
There is actually a spot price for them it seems, currently at $9.8318 / hour in us-east-1 (N. Virginia) and us-west-2 (Oregon).

Last fiddled with by ATH on 2020-11-05 at 01:51
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Old 2020-11-05, 05:13   #14
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Quote:
Originally Posted by ryanp View Post
I honestly don't even remember at this point what type of machine found that factor. Even if I did, that hardware has almost certainly been obsoleted by modern stuff. These days, Skylake/Cascadelake machines with either GMP-ECM (linked with GWNUM library) or AVX-ECM are pretty efficient for testing b^n +/- 1 numbers.
are you Ryan Propper???
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Old 2020-11-05, 05:36   #15
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Originally Posted by bbb120 View Post
are you Ryan Propper???
or Ryan's dog? Who knows!
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Old 2020-11-05, 10:06   #16
xilman
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Originally Posted by bbb120 View Post
are you Ryan Propper???
No, I am Ryan Propper, and so is my wife.
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Old 2020-11-05, 12:38   #17
ryanp
 
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or Ryan's dog? Who knows!
The cat does walk on the keyboard from time to time, but it's unclear if she's found any factors...
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Old 2020-11-05, 15:30   #18
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Quote:
Originally Posted by ryanp View Post
I honestly don't even remember at this point what type of machine found that factor. Even if I did, that hardware has almost certainly been obsoleted by modern stuff. These days, Skylake/Cascadelake machines with either GMP-ECM (linked with GWNUM library) or AVX-ECM are pretty efficient for testing b^n +/- 1 numbers.
Sparing me the build process to figure it out for myself, does GWNUM provide a speedup even for "small" inputs like 2^1277-1? How about 2^941-1? Wondering where the cutoff is to normal mulmod methods.

(Small, of course, relative to where prime95 usually operates.)
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Old 2020-11-05, 18:21   #19
ixfd64
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Quote:
Originally Posted by bbb120 View Post
I want to know his hardware ,
not I want his hardware !
sorry ,my native is not English
He mentioned several years ago that he has access to Stanford University's FarmShare cluster: https://mersenneforum.org/showpost.p...2&postcount=11
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Old 2020-11-05, 18:52   #20
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Originally Posted by ixfd64 View Post
He mentioned several years ago that he has access to Stanford University's FarmShare cluster: https://mersenneforum.org/showpost.p...2&postcount=11
Ryan can be a female name too. Unless you have specific knowledge....
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Old 2020-11-05, 19:45   #21
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Originally Posted by Uncwilly View Post
Ryan can be a female name too. Unless you have specific knowledge....
These days all names can be female, male, or pretty much anything else.

Today I am identifying as a sofa. Tomorrow, who knows?
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Old 2020-11-05, 19:58   #22
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This thread is.. strange.
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