Can anyone help me about msieve 1.53 with CUDA?

Seto · 2016-09-22, 19:50

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.

VBCurtis · 2016-09-22, 20:25

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.

Seto · 2016-09-23, 03:12

Quote:

Originally Posted by VBCurtis

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.

pinhodecarlos · 2016-09-23, 05:55

Maybe check this thread, last messages.

http://www.mersenneforum.org/showthr...t=20796&page=5

Seto · 2016-09-23, 20:26

Quote:

Originally Posted by pinhodecarlos

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

EdH · 2016-09-23, 20:50

Quote:

Originally Posted by Seto

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...

Seto · 2016-09-24, 03:01

Quote:

Originally Posted by EdH

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.

Seto · 2016-09-24, 10:03

Maybe because of the number is too large? It's a 1025 bit number?

jasonp · 2016-09-24, 12:54

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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2016-09-22, 20:25	#2
VBCurtis "Curtis" Feb 2005 Riverside, CA 3³×11×19 Posts	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.

2016-09-23, 05:55	#4
pinhodecarlos "Carlos Pinho" Oct 2011 Milton Keynes, UK 7×733 Posts	Maybe check this thread, last messages. http://www.mersenneforum.org/showthr...t=20796&page=5

2016-09-24, 10:03	#8
Seto Sep 2016 5 Posts	Maybe because of the number is too large? It's a 1025 bit number?

2016-09-24, 12:54	#9
jasonp Tribal Bullet Oct 2004 3²×5×79 Posts	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.