On 5 June 2015 at 01:58, Dave Goodell (dgoodell) <[email protected]> wrote:

...

That's a good fix. My only concern is if we hit the limit not because it is too small, but because something is going wrong.

I would also be a bit concerned about that.

So, I did the following test: I applied my patch to 3.2b3, then modified mpi4py's test/runtests.py slightly to run the full testsuite three successive times. Using gdb the same way (see the ticket for details) I can confirm MPIR_Add_finalize() is being invoked only during the first round, and exactly 33 times ;-). So now I'm somewhat confident my patch is OK and nothing else is going wrong. About using a linked list, not sure whether it is worth the effort. I would just improve the error message with some directions to increase the array size, so if this issue ever triggers again, MPICH developers would figure out immediately what's going on. -- 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