[petsc-dev] Regression in PetIGA with petsc/master

[Hong]

MatCreateSubMatrix_MPIAIJ_SameRowColDist() is a new addition to petsc for a
scalable implementation of MatCreateSubMatrix_MPIAIJ(), thus it is still
buggy.  I'm fixing a bug appeared with IS blocksize.

I cannot reproduce this valgrind error, neither from our nightly tests.
Can I have your test that shows this error?

Hong

On Mon, Jun 19, 2017 at 5:38 AM, Lisandro Dalcin <dalcinl at gmail.com> wrote:

> Dear Hong, any chance this is related to your work around commit
> 8b3fa1f7362a032c26473e2c80cb80f09a5a21c7
>
> This test is working just fine with PETSc 3.5, 3.6, and 3.7, but fails
> with petsc/master
>
> $ git  clone https://github.com/dalcinl/petiga
> $ cd petiga
> $ make
> $ cd test
> $ make IGAInputOutput
> $ mpiexec -n 4 valgrind -q ./IGAInputOutput -iga_dim 2
> ==26589== Invalid write of size 8
> ==26589==    at 0x5A7B8E7: ISGetSeqIS_SameColDist_Private (mpiaij.c:3026)
> ==26589==    by 0x5A7CFFF: MatCreateSubMatrix_MPIAIJ_SameRowColDist
> (mpiaij.c:3130)
> ==26589==    by 0x5A7E1DC: MatCreateSubMatrix_MPIAIJ (mpiaij.c:3243)
> ==26589==    by 0x5B64553: MatCreateSubMatrix (matrix.c:7894)
> ==26589==    by 0x4E9A704: MatView_MPI_IGA (petigamat.c:75)
> ==26589==    by 0x5B19527: MatView (matrix.c:986)
> ==26589==    by 0x402F5D: main (IGAInputOutput.c:119)
>
>
>
>
> --
> Lisandro Dalcin
> ============
> Research Scientist
> Computer, Electrical and Mathematical Sciences & Engineering (CEMSE)
> Extreme Computing Research Center (ECRC)
> King Abdullah University of Science and Technology (KAUST)
> http://ecrc.kaust.edu.sa/
>
> 4700 King Abdullah University of Science and Technology
> al-Khawarizmi Bldg (Bldg 1), Office # 0109
> Thuwal 23955-6900, Kingdom of Saudi Arabia
> http://www.kaust.edu.sa
>
> Office Phone: +966 12 808-0459
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20170619/d190d5ba/attachment.html>