Hi Jose, I don't think that my PETSc configuration doesn't have MUMPS. I configured that myself. I also got the output from this if-else code section
ierr = PetscPrintf(PETSC_COMM_WORLD, "PETSC_HAVE_MUMPS\n");CHKERRQ(ierr); which works from inside of the if-else section. Please take a look at the configuration info from the error output also: [0]PETSC ERROR: Configure options --COPTFLAGS=-O2 -no-ipo -g -qopt-report=5 -dynamic --CXXOPTFLAGS=-O2 -no-ipo -g -qopt-report=5 -dynamic --FOPTFLAGS=-O2 -no-ipo -g -qopt-report=5 -dynamic --with-mpiexec=srun --with-cc=cc --with-clib-autodetect=0 --with-cxx=CC --with-cxxlib-autodetect=0 --with-debugging=0 --with-fc=ftn --with-fortranlib-autodetect=0 --with-mpiexec=srun --with-shared-libraries=0 --with-x=0 LIBS=-lstdc++ PETSC_ARCH=arch-edison-opt64-intel --download-mumps --download-ptscotch --download-scalapack --download-metis --download-parmetis Thanks, M Hassan ________________________________ From: Jose E. Roman <[email protected]> Sent: Sunday, July 24, 2016 1:46:28 PM To: Hassan Md Mahmudulla Cc: [email protected] Subject: Re: [petsc-users] EPSKrylovSchurSetDetectZeros() not working The PETSc configuration you are using (PETSC_ARCH) does not have MUMPS. You have to add the appropiate options to PETSc's configure script. > El 24 jul 2016, a las 21:31, Hassan Md Mahmudulla <[email protected]> > escribió: > > Hi Jose, > Here is the part of the code: > > ierr = STSetType(st,STSINVERT);CHKERRQ(ierr); > > ierr = STGetKSP(st,&ksp);CHKERRQ(ierr); > ierr = KSPSetType(ksp,KSPPREONLY);CHKERRQ(ierr); > ierr = KSPGetPC(ksp,&pc);CHKERRQ(ierr); > ierr = PCSetType(pc,PCCHOLESKY);CHKERRQ(ierr); > > #if defined(PETSC_HAVE_MUMPS) > #if defined(PETSC_USE_COMPLEX) > SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_SUP,"Spectrum slicing with MUMPS is not > available for complex scalars"); > #endif > ierr = PetscPrintf(PETSC_COMM_WORLD, "PETSC_HAVE_MUMPS\n");CHKERRQ(ierr); > ierr = EPSKrylovSchurSetDetectZeros(eps,PETSC_TRUE);CHKERRQ(ierr); /* > enforce zero detection */ > ierr = PCFactorSetMatSolverPackage(pc,MATSOLVERMUMPS);CHKERRQ(ierr); > /* > Add several MUMPS options (currently there is no better way of setting > this in program): > '-mat_mumps_icntl_13 1': turn off ScaLAPACK for matrix inertia > '-mat_mumps_icntl_24 1': detect null pivots in factorization (for the > case that a shift is equal to an eigenvalue) > '-mat_mumps_cntl_3 <tol>': a tolerance used for null pivot detection > (must be larger than machine epsilon) > > Note: depending on the interval, it may be necessary also to increase > the workspace: > '-mat_mumps_icntl_14 <percentage>': increase workspace with a percentage > (50, 100 or more) > */ > ierr = PetscOptionsInsertString(NULL,"-mat_mumps_icntl_13 1 > -mat_mumps_icntl_24 1 -mat_mumps_cntl_3 1e-12");CHKERRQ(ierr); > #endif > > /* > Set solver parameters at runtime > */ > ierr = EPSSetFromOptions(eps);CHKERRQ(ierr); > > I am using MUMPS. Actually it's the example I said before. I didn't modify it > that much. > > > M Hassan
