Abstract
Adaptive MPI is an implementation of the Message Passing Interface
(MPI) standard. AMPI benefits MPI programs with features such as
dynamic load balancing, virtualization, and checkpointing. AMPI
runs each MPI process in a user-level thread, therefore causing
problems when an MPI program has global variables. Manually
removing the global variables in the program is tedious and
error-prone. In this paper, we present a tool that automates this
task with a source-to-source transformation that supports Fortran.
We evaluate our tool on a real-world large-scale FLASH code and
present preliminary results of running FLASH on AMPI. Our results
demonstrate that the tool makes it easier to use AMPI.