NDLI: Performance and toolchain of a combined GPU/FPGA desktop (abstract only)

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Performance and toolchain of a combined GPU/FPGA desktop (abstract only)

Content Provider	ACM Digital Library
Author	Braeken, An Touhafi, Abdellah Cornelis, Jan G. D'Hollander, Erik H. Lemeire, Jan da Silva, Bruno
Abstract	Low-power, high-performance computing nowadays relies on accelerator cards to speed up the calculations. Combining the power of GPUs with the flexibility of FPGAs enlarges the scope of problems that can be accelerated [2, 3]. We describe the performance analysis of a desktop equipped with a GPU Tesla 2050 and an FPGA Virtex-6 LX240T. First, the balance between the I/O and the raw peak performance is depicted using the roofline model [4]. Next, the performance of a number of image processing algorithms is measured and the results are mapped onto the roofline graph. This allows to compare the GPU and the FPGA and also to optimize the algorithms for both accelerators. A programming toolchain is implemented, consisting of OpenCL for the GPU and several High-Level Synthesis compilers for the FPGA. Our results show that the HLS compilers outperform handwritten code and offer a performance comparable to the GPU. In addition the FPGA compilers reduce the development time by an order of magnitude, at the expense of an increased resource consumption. The roofline model also shows that both accelerators are equally limited by the input/output bandwidth to the host. A well-tuned accelerator-based codesign, identifying the parallelism, the computation and data patterns of different classes of algorithms, will enable to maximize the performance of the combined GPU/FPGA system [1].
Starting Page	274
Ending Page	274
Page Count	1
ISBN	9781450318877
DOI	10.1145/2435264.2435336
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2013-02-11
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Programming toolchain Accelerators Fpga Opencl Hls compilers Performance Gpu
Content Type	Text
Resource Type	Article

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