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• W4310992956 abstract "Abstract Heterogeneous computing is the major driving factor in designing new energy-efficient high-performance computing systems. Despite the broad adoption of GPUs and other specialized architectures, the interest in spatial architectures like field-programmable gate arrays (FPGAs) has grown. While combining high performance, low power consumption and high adaptability constitute an advantage, these devices still suffer from a weak software ecosystem, which forces application developers to use tools requiring deep knowledge of the underlying system, often leaving legacy code (e.g., Fortran applications) unsupported. By realizing this, we describe a methodology for porting Fortran (legacy) code on modern FPGA architectures, with the target of preserving performance/power ratios. Aimed as an experience report, we considered an industrial computational fluid dynamics application to demonstrate that our methodology produces synthesizable OpenCL codes targeting Intel Arria10 and Stratix10 devices. Although performance gain is not far beyond that of the original CPU code (we obtained a relative speedup of $$times$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mo>×</mml:mo> </mml:math> 0.59 and $$times$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mo>×</mml:mo> </mml:math> 0.63, respectively, for a single optimized main kernel, while only on the Stratix10 we achieved $$times$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mo>×</mml:mo> </mml:math> 2.56 by replicating the main optimized kernel 4 times), our results are quite encouraging to drawn the path for further investigations. This paper also reports some major criticalities in porting Fortran code on FPGA architectures." @default.
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• W4310992956 date "2022-11-29" @default.
• W4310992956 modified "2023-10-14" @default.
• W4310992956 title "Accelerating legacy applications with spatial computing devices" @default.
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• W4310992956 doi "https://doi.org/10.1007/s11227-022-04925-2" @default.
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