Fixed-PSNR Lossy Compression for Scientific Data [article]

Dingwen Tao, Sheng Di, Xin Liang, Zizhong Chen, Franck Cappello
2018 arXiv   pre-print
Error-controlled lossy compression has been studied for years because of extremely large volumes of data being produced by today's scientific simulations. None of existing lossy compressors, however, allow users to fix the peak signal-to-noise ratio (PSNR) during compression, although PSNR has been considered as one of the most significant indicators to assess compression quality. In this paper, we propose a novel technique providing a fixed-PSNR lossy compression for scientific data sets. We
more » ... plement our proposed method based on the SZ lossy compression framework and release the code as an open-source toolkit. We evaluate our fixed-PSNR compressor on three real-world high-performance computing data sets. Experiments show that our solution has a high accuracy in controlling PSNR, with an average deviation of 0.1 ~ 5.0 dB on the tested data sets.
arXiv:1805.07384v3 fatcat:6fqkhblw7bc7bkctazb6jbhkfe