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• W2773283032 abstract "Floating-point computations produce approximate results, possibly leading to inaccuracy and reproducibility problems. Existing work addresses two issues: first, the design of high precision floating-point representations; second, the study of methods to trade off accuracy and performance of CPU applications. However, a comprehensive study of the tradeoffs between accuracy and performance on modern GPUs is missing. This study covers the use of different floating-point precisions (i.e., single and double floating-point precision in IEEE 754 standard, GNU Multiple Precision, and composite floating-point precision) on GPU using a variety of synthetic and real-world benchmark applications. First, we analyze the support for single and double precision floating-point arithmetic on different GPU architectures, and we characterize the latencies of all floating-point instructions on GPU. Second, we study the performance/accuracy tradeoffs related to the use of different arithmetic precisions on addition, multiplication, division, and natural exponential function. Third, we analyze the combined use of different arithmetic operations on three benchmark applications characterized by different instruction mixes and arithmetic intensities. As a result of this analysis, we provide insights to guide users to the selection of the arithmetic precision leading to a good performance/accuracy tradeoff depending on the arithmetic operations and mathematical functions used in their program and the degree of multithreading of the code." @default.
• W2773283032 created "2017-12-22" @default.
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• W2773283032 date "2017-10-01" @default.
• W2773283032 modified "2023-09-25" @default.
• W2773283032 title "Understanding the performance-accuracy tradeoffs of floating-point arithmetic on GPUs" @default.
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• W2773283032 doi "https://doi.org/10.1109/iiswc.2017.8167778" @default.
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