| InfiniBand Trade Association, InfiniBand Architecture Specification, Volume 1, Release 1.0," http://www.infinibandta.com (2008) | |||||||||||||||
Abstract | |||||||||||||||
| In this paper, we describe a methodology for implementing FPGA-based accelerator(FBA) from a high-level specification language. We have constructed a software package specially tuned for accelerating particle-based scientific computations with an FBA. Our software generates (a)a suitable configuration for the FPGA, (b) the C source code for interfacing with the FBA, and (c) a software emulator. The FPGA configuration is build by combining components from a library of parametrized arithmetic modules; these modules implement fixed-point, floating-point and logarithmic number system with flexible bitwidth and pipeline stages. To make certain our methodology is effective, we have applied our methodology to acceleration of astrophysical Nbody application with two types of platforms. One is our PROGRAPE-3 with four XC2VP70-5 FPGAs and another is a minimum composition of CRAY-XD1 with one XC2VP50-7 FPGA. As the result, we have achieved peak performance of 324 Gflops with PROGRAPE-3 and 45 Gflops with the minimum CRAY-XD1, sustained performance of 236 Gflops with PROGRAPE-3 and 34 Gflops with the CRAY-XD1. 1. | |||||||||||||||
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