AHA-GRAPE: Adaptive Hydrodynamic Architecture - GRAvity PipE

Details AHA-GRAPE: Adaptive Hydrodynamic Architecture - GRAvity PipE AHA-GRAPE: Adaptive Hydrodynamic Architecture - GRAvity PipE

1999-06-08

arxiv.org/abs/astro-ph/9906153v1

Astronomy and Astrophysics

Astrophysics

7 pages, 3 figures, to appear in Procs. of The 1999 International Conference on Parallel and Distributed Processing Techniques

Scientific paper

In astrophysics numerical star cluster simulations and hydrodynamical methods like SPH require computational performance in the petaflop range. The GRAPE family of ASIC-based accelerators improves the cost-performance ratio compared to general purpose parallel computers, however with limited flexibility. The AHA-GRAPE architecture adds a reconfigurable FPGA-processor to accelerate the SPH computation. The basic equations of the algorithm consist of three parts each scaling with the order of O(N), O(N*Nn), and O(N**2) respectively, where N is in the range of 10**4 to 10**7 and Nn approximately 50. These equations can profitably be distributed across a host workstation, an FPGA processor, and a GRAPE subsystem. With the new ATLANTIS FPGA processor we expect a scalable SPH performance of 1.5 Gflops per board. The first prototype AHA-GRAPE system will be available in mid-2000. This 3-layered system will deliver an increase in performance by a factor of 10 as compared to a pure GRAPE solution.

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