Great, you should be now about to remove the extra options I had you add.
> -fieldsplit_0_ksp_type gmres -fieldsplit_0_ksp_pc_side right
> -fieldsplit_1_ksp_type gmres -fieldsplit_1_ksp_pc_side right)
> On Jan 6, 2017, at 5:17 AM, Karin&NiKo wrote:
>
> Barry,
>
> you are goddamn right -
This is not good. Something is out of whack.
First run 1 and 2 processes with -ksp_view_mat binary -ksp_view_rhs binary
in each case this will generate a file called binaryoutput . Send both files to
petsc-ma...@mcs.anl.gov I want to confirm that the matrices are the same in
both c
> On Jan 5, 2017, at 5:58 AM, Dave May wrote:
>
> Do you now see identical residual histories for a job using 1 rank and 4
> ranks?
Please send the residual histories with the extra options, I'm curious too,
because a Krylov method should not be needed in the inner solve, I just asked
for
Do you now see identical residual histories for a job using 1 rank and 4
ranks?
If not, I am inclined to believe that the IS's you are defining for the
splits in the parallel case are incorrect. The operator created to
approximate the Schur complement with selfp should not depend on the
number of
Dear Barry, dear Dave,
THANK YOU!
You two pointed out the right problem.By using the options you provided
(-fieldsplit_0_ksp_type gmres -fieldsplit_0_ksp_pc_side right
-fieldsplit_1_ksp_type gmres -fieldsplit_1_ksp_pc_side right), the solver
converges in 3 iterations whatever the size of the commu
There is something wrong with your set up.
1 process
total: nonzeros=140616, allocated nonzeros=140616
total: nonzeros=68940, allocated nonzeros=68940
total: nonzeros=3584, allocated nonzeros=3584
total: nonzeros=1000, allocated nonzeros=1
