Thank you Satish for your kind help :) On Mon, May 28, 2018 at 8:51 PM, Satish Balay <[email protected]> wrote:
> I guess you would have to switch to AIJ format for superlu_dist. > > [superlu_dist internally has its own format - so there is a conversion > there anyway] > > Satish > > On Mon, 28 May 2018, Najeeb Ahmad wrote: > > > Thanks a lot Satish for your prompt reply. > > > > I just checked that SuperLU_dist package works only for matrices of type > > aij. and uses lu preconditioner. I am currently working with baij matrix. > > What is the best preconditioner choice for baij matrices on parallel > > machines? > > > > Thanks > > > > On Mon, May 28, 2018 at 8:23 PM, Satish Balay <[email protected]> wrote: > > > > > On Mon, 28 May 2018, Najeeb Ahmad wrote: > > > > > > > Hi All, > > > > > > > > I have Petsc release version 3.9.2 configured with the following > options: > > > > > > > > Configure options --with-cc=mpiicc --with-cxx=mpiicpc > --with-fc=mpiifort > > > > --download-fblaslapack=1 > > > > > > > > Now I want to use PCILU in my code and when I set the PC type to > PCILU in > > > > the code, I get the following error: > > > > > > > > [0]PETSC ERROR: --------------------- Error Message > > > > -------------------------------------------------------------- > > > > [0]PETSC ERROR: See > > > > http://www.mcs.anl.gov/petsc/documentation/linearsolvertable.html > for > > > > possible LU and Cholesky solvers > > > > [0]PETSC ERROR: Could not locate a solver package. Perhaps you must > > > > ./configure with --download-<package> > > > > [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/ > documentation/faq.html > > > for > > > > trouble shooting. > > > > [0]PETSC ERROR: Petsc Release Version 3.9.2, unknown > > > > [0]PETSC ERROR: ./main on a arch-linux2-c-debug named Karachi by > nahmad > > > Mon > > > > May 28 17:52:41 2018 > > > > [0]PETSC ERROR: Configure options --with-cc=mpiicc --with-cxx=mpiicpc > > > > --with-fc=mpiifort --download-fblaslapack=1 > > > > [0]PETSC ERROR: #1 MatGetFactor() line 4318 in > > > > /home/nahmad/PETSc/petsc/src/mat/interface/matrix.c > > > > [0]PETSC ERROR: #2 PCSetUp_ILU() line 142 in > > > > /home/nahmad/PETSc/petsc/src/ksp/pc/impls/factor/ilu/ilu.c > > > > [0]PETSC ERROR: #3 PCSetUp() line 923 in > > > > /home/nahmad/PETSc/petsc/src/ksp/pc/interface/precon.c > > > > [0]PETSC ERROR: #4 KSPSetUp() line 381 in > > > > /home/nahmad/PETSc/petsc/src/ksp/ksp/interface/itfunc.c > > > > [0]PETSC ERROR: #5 KSPSolve() line 612 in > > > > /home/nahmad/PETSc/petsc/src/ksp/ksp/interface/itfunc.c > > > > [0]PETSC ERROR: #6 SolveSystem() line 60 in > > > > /home/nahmad/Aramco/petsc/petsc/BlockSolveTest/src/main.c > > > > > > > > > > > > I assume that I am missing LU package like SuperLU_dist for instance > and > > > I > > > > need to download and configure it with Petsc. > > > > > > yes - petsc has sequential LU - but you need superlu_dist/mumps for > > > parallel lu. > > > > > > > > > > > I am wondering what is the best way to reconfigure Petsc to download > and > > > > use the appropriate package to support PCILU? > > > > > > Rerun configure with the additional option --download-superlu_dist=1. > > > > > > You can do this with current PETSC_ARCH you are using [i.e reinstall > > > over the current build] - or use a different PETSC_ARCH - so both > > > builds exist and useable. > > > > > > Satish > > > > > > > > > > > You advice is highly appreciated. > > > > > > > > > > > > > > > > > > > > > > -- *Najeeb Ahmad* *Research and Teaching Assistant* *PARallel and MultiCORE Computing Laboratory (ParCoreLab) * *Computer Science and Engineering* *Koç University, Istanbul, Turkey*
