Discussion related to cado-nfs

[Emmanuel Thomé <Emmanuel.Thome@inria.fr>]

Hi

Commit 0ac3b1eed sets the default value of tasks.sqrt.threads to 1.

As it turns out, tasks.sqrt.threads was already an exception to the hierarchical nature of the parameter dictionary in cado-nfs, so it's a really minor change (changing the previous default of min(8, server_threads) to just 1).

E.

On Mon, Jul 28, 2025 at 1:35 PM Paul Leyland <paul.leyland@gmail.com> wrote:

I have been bitten by the OOM in the sqrt phase and discovered the
solution of lowering the number of tasks independently.

I have also asked before, at least once, whether the default in the
provided params file can be reduced to 1 or 2 with a prominent note that
it could be increased if sufficient RAM is available.

I repeat this request.

Paul (the other one).

On 28/07/2025 11:56, Paul Zimmermann wrote:
>         Dear Hermann,
>
>> Date: Mon, 28 Jul 2025 12:00:57 +0200
>> From: hermann@stamm-wilbrandt.de
>>
>>> Which command is now needed to complete the factorization of RSA-155?
>>>
>> Found it, the sqrt command completed the factorization already, see
>> below.
> normally if you add says tasks.sqrt.threads=4 to you command-line
> it should suffice.
>
>>> Where in source tree is the orchestration of the tasks done?
>>>
>> This question is still open.
> this is partly in scripts/cadofactor/cadotask.py
>
> Paul