Charm++ parallel programming system

[Phil Miller <mille121 AT illinois.edu>]

On Tue, Nov 22, 2016 at 11:12 PM, Jozsef Bakosi <jbakosi AT gmail.com> wrote:

- What build configuration are you using on the Cray system? gni-crayxc? mpi-crayxc? smp or no? The full ./build command line would be useful, along with output from 'module list'

No smp. The build command and modules:

$ build charm++ mpi-crayxc --with-production -j40 -O3 -DNDEBUG

As you explore further, could you test out a build without the optimization flags above, and with -g? It would be useful to know if this is a case where compiler optimizations are changing behavior - likely indicating that the code is doing something invalid in the vicinity, but potentially a compiler bug.

In the same vein, could you try with an earlier version of the gcc module loaded, maybe a 4.8.x or 4.9.x? Or with Intel's compiler and corresponding PrgEnv-intel module?