How to use cuZFP's lossless compression to compress int？
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- C++
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Description
Hello，
I tried to use cuZFP (https://github.com/mclarsen/cuZFP,which is said that this work has now been added to the official zfp repository) to compress int data in lossless mode.However,I tried to run https://github.com/mclarsen/cuZFP/tree/develop/src/tests/t_encode_decode_1.cpp :
TEST(encode_decode, test_encode_decode_int32) { run_test<int>(512); }
but I found the result lossy:
Decode elapsed time: 0.00001 (s)
Decode rate: 158.95 (MB / sec)
Total absolute error 434.00000000000000000000
Average abosulte error 0.84765625000000000000 with 512 values.
How can I use lossless mode to compress int data?
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with cuZFP's src/tests/t_encode_decode_1.cpp and the test_encode_decode_int32 case, then compare its settings with the official zfp lossless-mode documentation. Verify the selected mode for int data and confirm completion with a zero-error encode/decode round trip.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- data
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100