Error Backtraces

[JaredCrean2]

When the MPI library reports an error, there is not backtrace information to figure out what line caused the error. For example, I got the error:

Attempting to use an MPI routine before initializing MPICH

probably because I forgot to call MPI.Init somewhere, but there is no additional information to figure out where.

[stevengj]

I think that error message comes from MPICH itself. Ideally we should register our own error handler function.