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Old 2016-09-22, 19:50   #1
Seto
 
Sep 2016

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Default Can anyone help me about msieve 1.53 with CUDA?

I tried the precompiled version from network.
Quote:
cannot load library 'sort_engine_sm20.dll', error 126
error: failed to load GPU sorting engine
This error is reported when I try large number.

I tried to compile it with cuda myself.
But I don't know how to compile ecm. It miss the gmp.h.
Or can anyone please share a precompiled version with me? Thank you so much.
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Old 2016-09-22, 20:25   #2
VBCurtis
 
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it's not the compilation, it's the dll (helper file) you need from CUDA files. Some copies of msieve are zipped with those dll's, others aren't. A google search for that specific dll file (and perhaps a repeat if a later error message asks for a new one) should do the job for you.
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Old 2016-09-23, 03:12   #3
Seto
 
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Quote:
Originally Posted by VBCurtis View Post
it's not the compilation, it's the dll (helper file) you need from CUDA files. Some copies of msieve are zipped with those dll's, others aren't. A google search for that specific dll file (and perhaps a repeat if a later error message asks for a new one) should do the job for you.
http://www.mersenneforum.org/showthread.php?t=19615

I download the compiled version from here. But it is with no success.
There's sort_engine_sm20.dll and stage1_core_sm20.ptx.
And I place a cudart64_55.dll in it.
It doesn't report that error now. But it crashes.
Could you please give me a working one? Thank you so much.

Last fiddled with by Seto on 2016-09-23 at 03:26
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Old 2016-09-23, 05:55   #4
pinhodecarlos
 
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Maybe check this thread, last messages.

http://www.mersenneforum.org/showthr...t=20796&page=5
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Old 2016-09-23, 20:26   #5
Seto
 
Sep 2016

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Quote:
Originally Posted by pinhodecarlos View Post
Maybe check this thread, last messages.

http://www.mersenneforum.org/showthr...t=20796&page=5
msieve-svn991-cuda75-haswell.zip from this thread is finally working for me.

But when I try to refactoring the number below . It is changed. 309 digits become 308 digits. But another 309 digits is ok.
original
263209838529653741309366162078767955401650210060093940479440536241110980313794956537153327107041219371342779419863684554849202277263853757273750327567871802106538309185809561001712198328099404198770096988081455939118836298393133358550417396551205893870871649995935725104508543665608276612812277299875371100701
changed
Sat Sep 24 04:22:53 2016 factoring 83440525043422150536435642999865482039852512165863283206010455083378304508293993404444849784633683350222665539992291197190412508449437134780902896928397677728770415760944075725409978726853310079317014035996450170280685616050670477076504286010378656707521139311349426864561297727128560307976920970251146963485 (308 digits)
another 309 digits OK
118393457429966445423507908491531402270337754158882484675748105934148846524056619706311661917410487644299844878332906894614644688640160609665064262216677430298946939779894734468229486527102847923162321052481696280953569396894564473594046393586443528941960719601633381910534441944880914440596803530540949102921

Last fiddled with by Seto on 2016-09-23 at 20:30
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Old 2016-09-23, 20:50   #6
EdH
 
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"Ed Hall"
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Quote:
Originally Posted by Seto View Post
msieve-svn991-cuda75-haswell.zip from this thread is finally working for me.

But when I try to refactoring the number below . It is changed. 309 digits become 308 digits. But another 309 digits is ok.
original
263209838529653741309366162078767955401650210060093940479440536241110980313794956537153327107041219371342779419863684554849202277263853757273750327567871802106538309185809561001712198328099404198770096988081455939118836298393133358550417396551205893870871649995935725104508543665608276612812277299875371100701
changed
Sat Sep 24 04:22:53 2016 factoring 83440525043422150536435642999865482039852512165863283206010455083378304508293993404444849784633683350222665539992291197190412508449437134780902896928397677728770415760944075725409978726853310079317014035996450170280685616050670477076504286010378656707521139311349426864561297727128560307976920970251146963485 (308 digits)
...
It took out the small factor of 3...

Last fiddled with by EdH on 2016-09-23 at 20:51
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Old 2016-09-24, 03:01   #7
Seto
 
Sep 2016

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Quote:
Originally Posted by EdH View Post
It took out the small factor of 3...
If 3 is the factor of it, I think the number should begin with 877. But instead, it doesn't.

Last fiddled with by Seto on 2016-09-24 at 03:01
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Old 2016-09-24, 10:03   #8
Seto
 
Sep 2016

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Maybe because of the number is too large? It's a 1025 bit number?
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Old 2016-09-24, 12:54   #9
jasonp
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Current versions have a 1024-bit limit on the input size. The limit is easy to increase, but I don't do that because then people will think Msieve can factor 1024-bit RSA keys. An intelligence agency probably can, but we definitely cannot.
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