[petsc-dev] PCASM+KSPGMRES

[Andrea Lani]

Dear devs,

sorry to bother you with this again, but can you please give me a final
word on whether KSPGMRES in combination with PCASM is currently supposed or
not to work with MATMPIAIJCUSP on multiple-GPUs as it does (that I can
clearly see) on 1 GPU? Do you have a test for that?

Again, for what I can see, residuals are inconsistent with 1 or more GPUs
and you don't get the same discrepancy with, for instance, PCJACOBI (same
exact residuals on single and multi-GPU). This makes me think (maybe
wrongly) that my part of the interfacing with PETSc is right.

Thanks in advance

Andrea




-- 
Dr. Andrea
Lani
Senior Research Engineer, PhD
Aeronautics & Aerospace dept., CFD group
Von Karman Institute for Fluid Dynamics
Chausse de Waterloo 72,
B-1640, Rhode-Saint-Genese,  Belgium
fax  : +32-2-3599600
work : +32-2-3599769
*lani at vki.ac.be <lani at vki.ac.be>*
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20140121/894cb64f/attachment.html>