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Erschienen in:
2019 | OriginalPaper | Buchkapitel
Research on Matrix Multiplication Based on the Combination of OpenACC and CUDA
verfasst von : Yuexing Wang
Erschienen in: Geo-informatics in Sustainable Ecosystem and Society
Verlag: Springer Singapore
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Abstract
With the improvement of GPU’s general computing capacity, the use of parallel computing to solve some difficult problems with large amount of data and intensive computing tasks has become the trend of the times. In GPU general computing, CUDA and OpenCL have been widely used and studied. However, the two parallel programming models generally exist the weakness that whose API is too close to the underlying hardware, which makes programming inefficient and is not suitable for the large-scale parallel tasks that require rapid implementation. OpenACC is a relatively advanced and simple programming language, which can achieve rapid parallelization, but the computing effect of the program is relatively low (generally lower than CUDA). Therefore, this paper tries to combine CUDA and OpenACC for mixed parallelization. This way not only greatly reduces the workload of code conversion, but also has a computing performance no less than a pure CUDA program.