I'm running the testsuite of my Python wrappers with MPICH 3.2b2. The runs are aborting this way: $ python test/runtests.py -q overflow in finalize stack! internal ABORT - process 0 [unset]: write_line error; fd=-1 buf=:cmd=abort exitcode=13 : system msg for write_line failure : Bad file descriptor It seems that the routine MPIR_Add_finalize() is being called more than 32 times, exhausting the static allocation space of 32 entries. I'm attaching a text file with a gdb sessions showing all the calls to this routine. -- Lisandro Dalcin ============ Research Scientist Computer, Electrical and Mathematical Sciences & Engineering (CEMSE) Numerical Porous Media Center (NumPor) King Abdullah University of Science and Technology (KAUST) http://numpor.kaust.edu.sa/ 4700 King Abdullah University of Science and Technology al-Khawarizmi Bldg (Bldg 1), Office # 4332 Thuwal 23955-6900, Kingdom of Saudi Arabia http://www.kaust.edu.sa Office Phone: +966 12 808-0459