MPI.

Many vendors, users, and authors of message-passing systems have organized to try to define a standard message-passing interface. This ``standard'' is (as of this writing) still in flux, but parts of it are solidifying. Bill Gropp and Ewing Lusk are providing a reference implementation for the standard as it is developed, and this implementation uses the Chameleon system, and thus either p4 or PVM, for its network implementation.

  

Figure: upshot Looking at Parallel Automated Reasoning Program

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