llnl/zfp

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Compressed numerical arrays that support high-speed random access

Stars: 885
Forks: 181
Open beginner issues: 0
Indexed issues: 37

Dominant language: C++
License: BSD-3-Clause
Last GitHub push: Jul 28, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

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37 open issues indexed

SECURITY.md points at private vulnerability reporting, but it is not enabled on this repository Open

Difficulty 1/5 Under an hour Newbie friendliness 52/100

llnl/zfp#304 · 2 comments · Opened Aug 28, 2026
Large overhead due to device init code Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

llnl/zfp#293 · 3 comments · Opened Apr 13, 2026
How to use cuZFP's lossless compression to compress int？ Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

llnl/zfp#278 · 1 comment · Opened Oct 9, 2025
Relative error bound results in out-of-bounds access after zfp_stream_maximum_size Open

bug documentation

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/zfp#272 · 5 comments · Opened Jul 28, 2025
generic seralization api needs to be reworked Open

bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

llnl/zfp#253 · 1 comment · Opened Feb 19, 2025
Unable to compile with ZFP_WITH_CUDA=TRUE on Windows Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/zfp#244 · 21 comments · Opened Nov 14, 2024
Undefined behaviour crash on NaN/inf/-inf input Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

llnl/zfp#242 · 9 comments · Opened Aug 19, 2024
example array.cpp error：C4146 Unary minus operator applied to unsigned type, the result is still unsigned. store.hpp 241 Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

llnl/zfp#239 · 3 comments · Opened Jul 19, 2024
Adjusting test cases from mock tests to proper tests for `testZfpCuda4d<datatype>` Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

llnl/zfp#235 · 3 comments · Opened Jul 2, 2024
Deserializing const_array Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/zfp#228 · 2 comments · Opened Feb 25, 2024
Numpy 2.0 Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

llnl/zfp#210 · 32 comments · 2 reactions · Opened Aug 15, 2023
Tiny but above subnormal numbers not handled correctly Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/zfp#209 · Opened Aug 13, 2023
oldest-supported-numpy Erroneously Required in Apple Silicon Python 3.10 Wheel Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

llnl/zfp#201 · 30 comments · Opened Mar 7, 2023
16-bit integer support Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

llnl/zfp#195 · 3 comments · Opened Dec 22, 2022
Bookmark potential integration target for ZFP Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

llnl/zfp#193 · 1 comment · Opened Dec 17, 2022
Segmentation fault on Mac M1 Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

llnl/zfp#187 · 10 comments · Opened Oct 10, 2022
Fortran test does not validate correctness Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

llnl/zfp#179 · Opened Sep 7, 2022
`zfp` binary CUDA support broken? Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

llnl/zfp#178 · 10 comments · Opened Aug 27, 2022
GNU make builds do not support make install Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

llnl/zfp#172 · 1 comment · Opened Aug 9, 2022
Precision=64 is not considered fixed-precision mode Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

llnl/zfp#164 · Opened Jun 10, 2022
ZFP Fortran Bindings and nvhpc Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/zfp#163 · 23 comments · Opened May 31, 2022
Merging changes of feature/hip-support (and feature/parallel-variable-rate) Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

llnl/zfp#158 · 6 comments · Opened Mar 21, 2022
Filling in missing values Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/zfp#149 · 6 comments · Opened Nov 1, 2021
Performance of Compreess side for AMD GPUs Open

performance

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/zfp#144 · 8 comments · Opened Sep 17, 2021
Support of parallel decompression for fixed rate Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/zfp#138 · 9 comments · Opened Jul 15, 2021
Add support for CUDA streams. Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

llnl/zfp#133 · 14 comments · Opened May 25, 2021
OpenMP tests fail when ZFP_WITH_OPENMP and ZFP_WITH_HIP are both enabled Open

help wanted

Difficulty 3/5 1-2 days Newbie friendliness 30/100

llnl/zfp#120 · 1 comment · Opened Jan 29, 2021
Use FindPython when it is more supported by scikit-build Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

llnl/zfp#110 · 1 comment · Opened Oct 12, 2020
ZFPY osx wheels delocate dylibs Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

llnl/zfp#107 · 9 comments · 2 reactions · Opened Sep 20, 2020
zfp Fortran compilation problem with flang (AMD aocc 2.2.0) Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

llnl/zfp#104 · 1 comment · Opened Aug 28, 2020
pip installation of zfpy on Windows 10 using MSYS2 MinGW 64-bit fails Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

llnl/zfp#102 · 3 comments · Opened Jun 25, 2020
Efficient sub-cube access Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/zfp#80 · 1 comment · Opened Nov 7, 2019
ZFP header for GPU compression Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

llnl/zfp#77 · 11 comments · Opened Oct 28, 2019
mmap-backed persistent ZFP arrays Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/zfp#59 · 4 comments · Opened May 8, 2019
regression testing requires BIT_STREAM_WORD_TYPE=uint64 Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

llnl/zfp#51 · 17 comments · Opened Mar 8, 2019
Half-precision (16-bit) floating-point compression Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

llnl/zfp#23 · 13 comments · 2 reactions · Opened Oct 31, 2018
Please add pkg-config .pc file Open

help wanted

Difficulty 3/5 1-2 days Newbie friendliness 35/100

llnl/zfp#16 · 5 comments · Opened May 13, 2018

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