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Re: [Cado-nfs-discuss] sieving takes too much time


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  • From: paul zimmermann <Paul.Zimmermann@inria.fr>
  • To: meng <qsmeng@126.com>
  • Cc: cado-nfs-discuss@lists.gforge.inria.fr
  • Subject: Re: [Cado-nfs-discuss] sieving takes too much time
  • Date: Wed, 17 Dec 2014 16:57:06 +0100
  • List-archive: <http://lists.gforge.inria.fr/pipermail/cado-nfs-discuss/>
  • List-id: A discussion list for Cado-NFS <cado-nfs-discuss.lists.gforge.inria.fr>

Dear Meng,

> Thank you very much for your helps. Indeed I made some progress, but
> still there exists error.
> with latest git version, I tried the commands with params.c59 you
> two suggested and the following two nonlinear polynomials as input:
> n: 71641520761751435455133616475667090434063332228247871795429
> skew: 1.29196058385
> c0: 8794918866367
> c1: 4558622527656
> c2: -4793408682249
> c3: 3460228261843
> Y0: -8342133927919
> Y1: 12431783167
> Y2: -9745365241781
> Y3: 7034907821749
> with the result as follows: [...]

the resultant of your two polynomials has 79 digits, thus you need to use
similar sieving parameters as in params.c79. With the attached params.c59 it
seems to work (with the git version).

Paul

Attachment: params.c59
Description: Binary data




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