On Thu, 6 Nov 2008, Barry Smith wrote: > It is not possible to change petsc-2.3.3 to use hypre 2.4 Actually - you might be able to just do the following with petsc-2.3.3 and it should work.. wget ftp://ftp.mcs.anl.gov/pub/petsc/externalpackages/hypre-2.4.0b.tar.gz ./config/configure.py --download-hypre=hypre-2.4.0b.tar.gz Satish