Forum: GPU Computing
2013-03-11, 18:30
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Replies: 3,464
Views: 347,929
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Forum: Lounge
2013-03-11, 10:20
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Replies: 103
Views: 8,866
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Forum: GPU Computing
2013-03-11, 10:18
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Replies: 3,464
Views: 347,929
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Forum: GPU Computing
2013-03-10, 11:57
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Replies: 3,464
Views: 347,929
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Forum: GPU Computing
2013-03-09, 16:10
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Replies: 3,464
Views: 347,929
I guess we can limit ourselves to primitive...
I guess we can limit ourselves to primitive divisors; divisors of algebraic factors may or may not be found but we can leave those for the user to figure out. For a primitive divisor p of 2^n-1, we...
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Forum: GPU Computing
2013-03-09, 14:50
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Replies: 3,464
Views: 347,929
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Forum: GMP-ECM
2013-03-08, 15:39
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Replies: 69
Views: 12,546
RichD,
can you try compiling the asm code...
RichD,
can you try compiling the asm code with a newer version of gcc than 4.2? It works on, e.g., gcc110.fsffrance.org with 4.7.2.
The speed regression may be due to not using the asm mulredc;...
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Forum: Science & Technology
2013-03-07, 18:28
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Replies: 117
Views: 24,973
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Forum: Lounge
2013-03-05, 09:57
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Replies: 1,664
Views: 106,093
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Forum: Lounge
2013-03-01, 22:22
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Replies: 15
Views: 3,066
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Forum: Operazione Doppi Mersennes
2013-03-01, 21:46
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Replies: 627
Views: 69,539
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Forum: Data
2013-03-01, 17:48
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Replies: 25
Views: 3,533
I've been wondering about that... current Mp...
I've been wondering about that... current Mp candidates have residues of about 4-8MB each, so on a contemporary system, you could fit on the order of 2^10 residues. That would be enough to make a...
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Forum: Computer Science & Computational Number Theory
2013-03-01, 17:26
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Replies: 36
Views: 5,109
This is in fact a particular case of the...
This is in fact a particular case of the Frobenius test, explained in Crandall and Pomerance, among others. You are working in Fp[x]/(x^2+1) which is a proper quadratic extension for a prime p ≡ 3...
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Forum: GMP-ECM
2013-03-01, 15:52
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Replies: 4
Views: 1,571
It uses getrusage() to get cpu time, which...
It uses getrusage() to get cpu time, which theoretically counts only the time the program actually executes and should not be affected (much) by the process being suspended to let other processes...
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Forum: GMP-ECM
2013-03-01, 12:52
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Replies: 4
Views: 1,571
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Forum: Operazione Doppi Mersennes
2013-03-01, 09:56
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Replies: 495
Views: 50,970
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Forum: GMP-ECM
2013-03-01, 09:49
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Replies: 43
Views: 5,989
Glad to hear it works! I guess we should print...
Glad to hear it works! I guess we should print the suggestion of trying --with-gmp= along with the GMP version mismatch error message. That error happens very frequently since most distros come with...
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Forum: GMP-ECM
2013-03-01, 00:14
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Replies: 43
Views: 5,989
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Forum: GMP-ECM
2013-02-27, 15:30
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Replies: 12
Views: 12,829
Version 6.4.4 is now available from...
Version 6.4.4 is now available from https://gforge.inria.fr/projects/ecm/
Changes between GMP-ECM 6.4.3 and GMP-ECM 6.4.4:
* Fixed PowerPC64 assembly code with --enable-shared (thanks Leif...
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Forum: Programming
2013-02-26, 11:52
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Replies: 22
Views: 4,292
Currently the test builds link against the GMP...
Currently the test builds link against the GMP library provided by MinGW, although a separately compiled GMP should work just as well. We tested only MinGW32 so far, not MinGW64, so right now that...
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Forum: Factoring
2013-02-22, 20:26
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Replies: 69
Views: 6,255
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Forum: Factoring
2013-02-22, 18:19
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Replies: 69
Views: 6,255
It was a bit faster when I visited EPFL a few...
It was a bit faster when I visited EPFL a few years ago. However, I have not worked on that code since, while Thorsten probably worked on his, and I have no idea how they compare with newer lasieve...
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Forum: GMP-ECM
2013-02-19, 18:58
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Replies: 43
Views: 5,989
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Forum: GMP-ECM
2013-02-19, 16:31
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Replies: 43
Views: 5,989
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Forum: GMP-ECM
2013-02-18, 16:33
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Replies: 43
Views: 5,989
The bug is due to GMP 5.1.x using a different...
The bug is due to GMP 5.1.x using a different semantic for __gmp_redc_{12}() functions than GMP 5.0.x and MPIR did, and GMP-ECM 6.4.{0123} expects the old kind. A GMP-ECM 6.4.4 release is currently...
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