... environment¹

This work was supported in part by the National Science Foundation Division of Advanced Computational Infrastructure and Research, contract number 9872125.

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... Fortran²

Though HPJava does not enforce a completely object-oriented programming style--it consciously allows a more ``Fortran-like'' style, where appropriate.

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... arrays³

These aren't really different types--to be precise sequential multiarrays are a subset of distributed arrays.

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...2)⁴

In later benchmarks we will take PRE alone as our ``Level 1'' optimization.

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... HPJOPT2⁵

We can see that HPJOPT2 has no advantage over simple PRE in this benchmark. The reason is the innermost loop for the direct matrix multiplication algorithm in HPJava is a ``for'' loop, i.e. ``sequential'' loop. This means the more specialized HPJOPT2 scheme has nothing to optimize.

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... Fortran⁶

We do not believe that the current communication library of HPJava is faster than the HPF library because our communication library is built on top of the portability layers, mpjdev and MPI, while IBM HPF is likely to use a platform specific communication library. But clearly future versions of Adlib could be optimized for the platform.

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... problems⁷

The program simulates a 2-D inviscid flow through an axisymmetric nozzle. The simulation yields contour plots of all flow variables, including velocity components, pressure, mach number, density and entropy, and temperature. The plots show the location of any shock wave that would reside in the nozzle. Also, the code finds the steady state solution to the 2-D Euler equations.

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