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Re: [Cado-nfs-discuss] Infinite loop in sqrt


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  • From: eric.jeancolas@free.fr
  • To: Paul Zimmermann <Paul.Zimmermann@inria.fr>
  • Cc: cado-nfs-discuss@lists.gforge.inria.fr
  • Subject: Re: [Cado-nfs-discuss] Infinite loop in sqrt
  • Date: Tue, 4 Aug 2020 19:31:02 +0200 (CEST)
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Dear Paul,
Very good idea! It will more friendly that having the feeling to have reached
a roundabout with a no-way sign at each exit!
About the sqside option, yes I did. Indeed, I put tasks.sieve.sqside = 0 in
the parameter file I use for SNFS. With the spaces around the "=" in the
parameter file.
Best regards.

----- Mail original -----
De: "Paul Zimmermann" <Paul.Zimmermann@inria.fr>
À: "eric jeancolas" <eric.jeancolas@free.fr>
Cc: "Emmanuel Thome" <Emmanuel.Thome@inria.fr>,
cado-nfs-discuss@lists.gforge.inria.fr
Envoyé: Mardi 4 Août 2020 16:34:05
Objet: Re: [Cado-nfs-discuss] Infinite loop in sqrt

Dear Eric,

> Date: Mon, 3 Aug 2020 18:26:05 +0200 (CEST)
> From: eric.jeancolas@free.fr
>
> Ah ok, as you mentionned, I thought this situation was rare enough not to
> encounter it!
> As the deg 6 polynomial gave me the result, I will not proceed on this case.
> At least, I've got the answer, and it is shared on the group.
> Thank you for that.
> Best regards.
> Eric

to avoid such infinite loops in the future, I've added an error message
when we find no suitable prime < 1000000. In such a case the error message
points to the README, paragraph "Factoring with SNFS".

Best regards,
Paul

PS: by the way, did you use tasks.sieve.sqside=0 with your SNFS polynomials?




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