Discussion related to cado-nfs

[Paul Leyland <paul.leyland@gmail.com>]

Apologies if this in the documentation somewhere but I haven't yet found
it.

Early this morning the linear algebra started with the default 1x2
threads.  The machine has 8 cpus (dual quad-cores) and it would seem to
make sense run on at least four of them so I killed the running krylov,
edited the params file to set tasks.linalg.bwc.threads = 2x2 and
restarted.

Almost instant failure.

What is the recommended way of making this change?

Thanks,
        Paul