Debugging race conditions in message-passing programs
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Symbolically modeling concurrent MCAPI executions
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The recently proposed MCAPI (Multicore Association Communication API) specification provides multicore programs developers with a standard API for inter-core messages-based communication and stream-based communication. Debugging MCAPI programs that use message-based communication is expected to be very challenging due to the non-determinism associated with the order of messages' arrivals at a core. In this paper we present a tool that uses an off-the-shelf SMT solver to symbolically explore all possible orders of messages arrival in an MCAPI program. If there is a specific order of messages arrival that leads to an error state, this order is presented to the user as a debugging aid.