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Performance Analysis of pC++: A Portable Data-Parallel Programming System for Scalable Parallel Computers


pC++ is a language extension to C++ designed to allow programmers to compose distributed data structures with parallel execution semantics. These data structures are organized as ``concurrent aggregate'' collection classes which can be aligned and distributed over the memory hierarchy of a parallel machine in a manner consistent with the High Performance Fortran Forum (HPF) directives for Fortran 90. pC++ allows the user to write portable and efficient code which will run on a wide range of scalable parallel computers.

In this paper, we discuss the performance analysis of the pC++ programming system. We describe the performance tools developed and include scalability measurements for four benchmark programs: a ``nearest neighbor'' grid computation, a fast Poisson solver, and the ``Embar'' and ``Sparse'' codes from the NAS suite. In addition to speedup numbers, we present a detailed analysis highlighting performance issues at the language, runtime system, and target system levels.
Thu Feb 24 13:42:43 PST 1994