The Integrative Model for Parallelism at TACC is a new development in parallel programming. It allows for high level expression of parallel algorithms, giving efficient execution in multiple parallelism modes. We caught up with its creator, Victor Eijkhout, to learn more. “If you realize that both task dependencies and messages are really the dependency arcs in a dataflow formulation, you now have an intermediate representation, automatically derived, that can be interpreted in multiple parallelism modes.”