2 the Finite Differences Algorithm and Common Coding Faults

This chapter presents the PARTYPES framework to statically verify C programs that use the Message Passing Interface, the widely used standard for message-based parallel applications. Programs are checked against a protocol specification that captures the interaction in an MPI program. The protocol language is based on a dependent type system that is able to express various MPI communication primitives, including point-to-point and collective operations. The verification uses VCC, a mechanical verifier for concurrent C programs. It takes the program protocol written in VCC format, an annotated version of the MPI library, and the program to verify, and checks whether the program complies with the protocol.