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Forum: Msieve

2013-07-01, 12:10

Replies: 1

Latest msieve - GPU for LA?

Views: 2,334

Posted By david314

Latest msieve - GPU for LA?

Hi,

It looks, in http://sourceforge.net/p/msieve/code/HEAD/tree/branches/msieve-lacuda that GPUs may be supported soon for linear algebra?

Is this true? If so, how does one try it out in the...

Forum: Msieve

2013-04-13, 21:30

Replies: 5

msieve MPI error

Views: 1,601

Posted By david314

Thanks Batalov, that helps for -nc1 ! Recompiled...

Thanks Batalov, that helps for -nc1 ! Recompiled with -march=opteron and fixed it.

To be clear, for MPI, does one use different M,N in each command line, e.g. "-nc2 1,4" "-nc2 2,4" etc. for a 4x4...

Forum: Msieve

2013-04-13, 16:11

Replies: 5

msieve MPI error

Views: 1,601

Posted By david314

I tried the -nc1 step again on this machine. ...

I tried the -nc1 step again on this machine. Even stranger results.

Msieve v. 1.52 (SVN 880)
Sat Apr 13 05:36:59 2013
random seeds: 982d5ff4 0a09ba06
MPI process 0 of 1
factoring...

Forum: Msieve

2013-04-13, 07:12

Replies: 5

msieve MPI error

Views: 1,601

Posted By david314

msieve MPI error

Hello ,

I am trying for first time the MPI support in msieve. For my first run, I am using only 1x1 grid.

I get this error. What does it mean? Thank you

Msieve v. 1.52 (SVN 880)
Fri Apr...

Forum: Msieve

2012-07-29, 06:27

Replies: 21

Can msieve handle c197's with SNFS?

Views: 2,567

Posted By david314

k, I'm still hitting this, and I can't figure out...

k, I'm still hitting this, and I can't figure out what to do. Here's another run with another number (c203), same symptoms though. I'm running in "-v" mode to get a little more verbose details...

Forum: Msieve

2012-07-26, 05:53

Replies: 21

Can msieve handle c197's with SNFS?

Views: 2,567

Posted By david314

hmm, I found a bunch of lines at the end of...

hmm, I found a bunch of lines at the end of input.dat like:

268427021,0:
268427381,0:
268427461,0:
268428071,0:
268428211,0:
268428431,0:
268428631,0:
268429211,0:

Forum: Msieve

2012-07-24, 14:32

Replies: 21

Can msieve handle c197's with SNFS?

Views: 2,567

Posted By david314

Batalov: good thought, however I've tried...

Batalov: good thought, however I've tried rebuilding the binary and all dependencies (first libgmp, then libecm, then msieve) on the same machine, and keep observing the same crash and stack trace.
...

Forum: Msieve

2012-07-24, 00:17

Replies: 21

Can msieve handle c197's with SNFS?

Views: 2,567

Posted By david314

Still no luck on this c197 with a dynamically...

Still no luck on this c197 with a dynamically linked msieve binary. But I did get a somewhat more descriptive stack trace...

*** buffer overflow detected ***: ./msieve terminated
=======...

Forum: Msieve

2012-07-23, 23:03

Replies: 21

Can msieve handle c197's with SNFS?

Views: 2,567

Posted By david314

BTW, here are the first few relations in...

BTW, here are the first few relations in input.dat; I don't know if factmsieve is doing something funky.

N...

Forum: Msieve

2012-07-23, 23:00

Replies: 21

Can msieve handle c197's with SNFS?

Views: 2,567

Posted By david314

FYI, this happens even with version Msieve v....

FYI, this happens even with version Msieve v. 1.51 (SVN 722), which I just compiled from SVN at head.

I'm building a statically linked binary because I'm using it on a few machines:

$ file...

Forum: Msieve

2012-07-23, 20:25

Replies: 21

Can msieve handle c197's with SNFS?

Views: 2,567

Posted By david314

Same thing even with 49M relations. Is there...

Same thing even with 49M relations. Is there perhaps something wrong with the polynomial I'm using?

Forum: Msieve

2012-07-23, 19:26

Replies: 21

Can msieve handle c197's with SNFS?

Views: 2,567

Posted By david314

Same thing, even with 49071832 relations... ...

Same thing, even with 49071832 relations...

*** buffer overflow detected ***: ./msieve terminated
======= Backtrace: =========
[0x51ecb5]
[0x51e87e]
[0x51e099]
[0x4ff9dc]
[0x4f0dcb]...

Forum: Msieve

2012-07-23, 17:59

Replies: 21

Can msieve handle c197's with SNFS?

Views: 2,567

Posted By david314

Can msieve handle c197's with SNFS?

Hi,

trying to run factmsieve with the c197: 3^412 - 2 = 37493582965828985969957724950586364036097201250169303876336045733
55345200761878611110665898978791442414402602377192197115847303615...

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