llnl / llnl/zfp

Performance of Compreess side for AMD GPUs

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performance
Dominant language
C++
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Description

I am using ZFP for 4MB buffer to compress on AMD GPUs and compared to the numbers that I have for NVIDIA there is a huge delay for compression side for compression rate of 8 and 1 dimension data. I was wondering if these numbers sound OK to you and if there is anything could be done to improve the poor compression side. Thanks.

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Compression Section | time in seconds |   | Decompress | time in seocnds
-- | -- | -- | -- | --
compress set-parameters | 0.000024398 |   | decompress set-parameters | 0.000015471
opening zfp stream | 0.000010577 |   | opening zfp stream | 0.000002414
pure compression time | 1.539804423 |   | decompress bitstream setting | 0.000017298
compression dev sync | 0.000595486 |   | pure decpmpress time | 0.188093374
clean up compress | 0.000006698 |   | clean up decpmpress | 0.000002639

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Research direction

No source files, tests, or entry points are named. Start by reproducing the reported 4MB, one-dimensional compression timings on an AMD GPU at compression rates 8 and 1, then compare them with the NVIDIA measurements; done means explaining the discrepancy or identifying a measurable compression-side improvement.

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Assessment

Tech stack
cpp
Domain
performance
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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