[Cado-nfs-discuss] Linear Algebra with MPI

Pierpaolo Santucci santucci.pierpaolo at gmail.com
Thu Aug 14 19:19:44 CEST 2014

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.

Pierpaolo Santucci
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