[Cado-nfs-discuss] Linear Algebra with MPI

Emmanuel Thomé emmanuel.thome at gmail.com
Thu Aug 14 19:47:51 CEST 2014


Most probably you haven't compiled cado-nfs for mpi use. There is an
influential MPI variable which can be set from local.sh .

Please report how far you can go. I have little to no internet connection
at all at the moment, but I'll try to help to the extent possible.

E.
Le 14 août 2014 19:20, "Pierpaolo Santucci" <santucci.pierpaolo at gmail.com>
a écrit :

> Hello everyone!
>
> I'm interested in CADO-NFS 2.1 linear algebra. I want to execute the Block
> Wiedemann Algorithm on several hosts via MPI (mpich-3.1.2) but the command:
>
> ./bwc.pl :complete mpi=2 hosts=host1,host2 thr=4 mn=64 nullspace=left
> interval=100 matrix=/tmp/cado.XXXXBy837j/c90.merge.small.bin wdir=/tmp/tmp
> interleaving=0 shuffled_product=1
>
> gives me the following error:
>
> Inconsistency -- exactly 2 == 1 * 2 MPI jobs are needed -- got 1
> ./dispatch: exited with status 1
>
> What's wrong?
>
> Thanking you in advance.
> Regards,
>
> Pierpaolo Santucci
>
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