New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

HDF5 settings: chunking, compression etc. #44

Open

4 tasks

gipert opened this issue May 4, 2024 · 1 comment

Labels

Member

gipert commented May 4, 2024 •

edited

Loading

Decide if we want to keep using our custom waveform compressors or just an HDF5 filter (e.g. GZIP)
Decide on the HDF5 filter for the higher tiers: GZIP is old and slow, can we use SZIP (builtin since HDF5 v1.6)?
Should we run bit shuffle first?
What is the optimal chunk size for higher tier data?

Current raw tier HDF5 settings: https://github.com/legend-exp/legend-dataflow-config/tree/main/tier_raw

Contributor

lvarriano commented May 10, 2024 •

edited

Loading

See https://legend-exp.atlassian.net/wiki/spaces/LEGEND/pages/991953524/Investigation+of+LH5+File+Structure+and+I+O
and legend-exp/legend-pydataobj#77

gipert added the performance label

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment