I can't claim to speak for Jose, but I had asked him this same question about a year ago, and IIRC he had said that the default algorithm in SlepC (KrylovSchur) is equivalent or better then Arpack.
Looking through my email this is what I did to get arpack working (I never used it because I switched to KrylovSchur). Can't guarantee it will work for you - > I was able to install ARPACK & link it with SLEPC on FC15 using gcc/g++/gfortran The issues were - > 1) I needed to change a function declaration in Arpack. This was holding up the linking. The function was etime in second.f > 2) I need to compile ARPACK with -fno-underscoring to make sure that the C code (SlepC) links with the Fortran code > 3) I needed to compile additional object files by doing make all in the LAPACK/BLAS directory that came with ARPACK to make sure that the examples ran. > 4) To link it with SlepC I needed to create position independent code using the -fPIC flag on the compiler > 5) I needed to install PETSC and SlepC with OpenMPI to be able to use Parpack. I needed to set the LD_LIBRARY_PATH to the directory where the openmpi compilers were located so that SlepC could find them. > -Nachiket -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20130503/4cecb4cd/attachment.html>
