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Re: [Cado-nfs-discuss] bug in polyselect2l.c parameters


Chronological Thread 
  • From: Zimmermann Paul <Paul.Zimmermann@loria.fr>
  • To: Jayson King <jk@jaysonking.com>
  • Cc: cado-nfs-discuss@lists.gforge.inria.fr
  • Subject: Re: [Cado-nfs-discuss] bug in polyselect2l.c parameters
  • Date: Mon, 01 Oct 2012 20:39:43 +0200
  • 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>

Jayson,

I've decreased the value of P in the params.c* files of the development
version to avoid the issue you reported.

I've chosen a value of P such that the maximal value of l = p_1*p_2*q does
not exceed m0/P^2.

In some cases I had to decrease P by a factor of 10 or more. For example in
params.c155 we now have P=52000 instead of P=1e6 before.

We could also decrease lq (the number of special-q primes) to avoid decreasing
P too much.

Thank you again for your detailed report,
Paul Zimmermann




  • Re: [Cado-nfs-discuss] bug in polyselect2l.c parameters, Zimmermann Paul, 10/01/2012

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