Discussion related to cado-nfs

[paul zimmermann <Paul.Zimmermann@inria.fr>]

       Mike,

> From: Mike Curtis <vbcurtis@gmail.com>
> Date: Tue, 16 Jan 2018 22:50:37 -0800
> 
> I have done a large set of test factorizations from 100 to 125 digits, and 
> wish to
> make my own param files every 3 digits rather than every 5. Does CADO 
> expect a
> params.c105 specifically, or can I change to params.c103, params.c106, etc? 
> That is,
> will CADO locate the param file of nearest size, or is every-5-digits how 
> it's meant
> to stay?

if a parameter with the exact size exists, it will be taken. For example you 
can copy
parameters/factor/params.c60 to parameters/factor/params.c63, change name to 
c63, and
if you factor a 63-digit number, the new file will be chosen.

But you can also easily modify the scripts to round to the nearest multiple 
of 3.
See file scripts/cadofactor/toplevel.py, around line 163.

> Also, I have tested a set of parameter refinements that seem to improve
> substantially (Say, 15-25% less time to complete GNFS) upon the default 
> param files
> included in 2.3.0; some weird choices are made by default, such as using 
> I=13 in c95
> but I=11 in c100. Should I send these possible improvements to the c105 
> through c120
> default files to someone in particular?

you can send them to me (c105, c110, c115, c120).

Best regards,
Paul Zimmermann