Discussion related to cado-nfs

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

       Hi N,

> Date: Wed, 22 Dec 2021 03:25:59 +0000
> From: N <factorn@pm.me>
> 
> Hello,
> 
> I compiled from master branch ( commit: d7ccce67fbf4 ). Build success on
> Ubuntu 20.04. There are some numbers that give an error, upon closer look
> the error message is:
> 
>  /Git/cado-nfs$ time ./cado-nfs.py 108725311124863713831801731901593
>  Traceback (most recent call last):
>    File "./cado-nfs.py", line 144, in <module>
>      parameters, db = toplevel_params.get_cooked_parameters()
>    File "/Git/cado-nfs/./scripts/cadofactor/toplevel.py", line 1175, in
>  get_cooked_parameters
>      self.set_N_paramfile_workdir()
>    File "/Git/cado-nfs/./scripts/cadofactor/toplevel.py", line 647, in
>  set_N_paramfile_workdir
>      self.args.parameters = self.find_default_parameter_file()
>    File "/Git/cado-nfs/./scripts/cadofactor/toplevel.py", line 186, in
>  find_default_parameter_file
>      raise RuntimeError("no parameter file found"
>  RuntimeError: no parameter file found for c33 (tried c33, c35)
> 
> Same message on trying to factor 151132207742640142005548601981029.

see https://sympa.inria.fr/sympa/arc/cado-nfs/2021-09/msg00006.html.
Feel free to submit a parameter file, for example c35.

> Incidentally, I cannot get Tag 2.3.0 to compile on my system running Ubuntu
> 20.04. I am compiling with gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0, so many
> errors. 
> Has anyone actually tried to compile that version with a modern Compiler on
> a recent OS? I saw documentation using GCC 4.7.2, see
> https://cado-nfs.gitlabpages.inria.fr/.
> Surely the latest compilers will have a drastic difference in performance.

it should compile with recent compilers, we test many of them. Please send
detailed information about the errors you get.

Best regards,
Paul Zimmermann