Indeed, a call to MPI_Init() breaks the printf()... I'll look on the MPI side.
Thanks for your help. (Sorry for my last answer, it had the wrong subject...) Thomas Leissing -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20111213/152897e6/attachment.htm>
