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szcompressor / SZ

Error-bounded Lossy Data Compressor (for floating-point/integer datasets)
http://szcompressor.org
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Can lossless compression be used #65

Closed lljjgg closed 3 years ago

lljjgg commented 3 years ago

SZ is Lossy Compressor.But Some compressors can provide lossless compression.for example fpzip and zfp.I want to know if sz can use lossless compression and what should I do if it can.

disheng222 commented 3 years ago

Strictly speaking, SZ has no lossless compression mode, unlike fpzip and zfp. If you are setting a very small absolute error bound, it may gracefully degrade to the simple zstd to compress the data instead.

On Thu, Dec 3, 2020 at 1:46 AM lljjgg notifications@github.com wrote:

SZ is Lossy Compressor.But Some compressors can provide lossless compression.for example fpzip and zfp.I want to know if sz can use lossless compression and what should I do if it can.

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