Decompression Parameters

[ax3l]

The same way we can pass parameters when writing for operators/compression, we also need to expose parameters in reading.

This is needed to control the parallelism of compressors explicitly in ADIOS2 + c-blosc.

(Compressor algorithms themselves are of course handled automatically in reads by the file formats we implement.)

X-ref:

• Allow nthreads parameter for blosc decompression ornladios/ADIOS2#3014
• Pass decompress parameters to ADIOS when reading back data ornladios/ADIOS2#3008

[guj]

Franz addressed this in PR #1191