Support for HDF5 compression #7996
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Updating SCORPIO CMake script to detect and add HDF5 compression filters (ZFP, Blosc2)
Adding support for writing E3SM output using SCORPIO+HDF5 with compression. * Users can use xmlchange to set PIO_TYPENAME to "hdf5c" to write data with compression * Also points SCORPIO submodule to the development branch that supports HDF5 data compression (Data compression is only supported 3D+ variables for now)
Adding missing description (valid values) of ADIOS and HDF5 I/O types in the driver namelist XML
Updating the CMake script that finds SCORPIO depdendencies to find HDF5 filters for ZFP and Blosc2 compression libraries
Adding a testmod to force tests to use HDF5 with data compression
Adding testmod to force tests to use HDF5
Updating the MPAS framework and build system to support HDF5 (with and without data compression).
Adding comments on how to disable HDF5 compression for selected E3SM variables.
Updating SCORPIO to 1.9.0 SCORPIO v1.9.0 includes the following changes, * HDF5 data compression support * Enhancements to lossy data compression support using ADIOS2 * More tuning knobs for I/O data compression * HDF5 support for large variables * Documentation fixes * Misc bug fixes
Adding paths to HDF5 compression filters for Perlmutter+Cray+GNU
Adding paths to HDF5 compression filters for Frontier+Cray+GNU
jayeshkrishna
added
enhancement
Scripts
Coupler
rljacob
reviewed
Jan 16, 2026
Adding a compile flag to turn on thread support in MPI. The user needs to build E3SM with "-DMPI_INIT_THREADED=1" to init MPI with threads (MPI_THREAD_MULTIPLE)
Moving to the multi-threaded version of HDF5 and related libs on anl workstation
SCORPIO v1.9.1 includes many fixes related to data compression, * Fixed issues with multiple redef/enddef calls with HDF5 * Manual datatype conversion, as needed, for HDF5 output * Fix typos for ADIOS+ZFP compression rate * Disable HDF5+ZFP compression for scalars and 5D+ variables and variables with only unlimited dimensions * Adding related tests * put_vars_* support for CDF5 types when using PnetCDF
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bartgol
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Looks like a missing header (stdint) causing build failures (https://gcc.gnu.org/gcc-13/porting_to.html). Will fix this issue soon. |
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Adding support for data compression using HDF5. Also,
adding support for initializing the MPI library with thread
support. This change also integrates a new version of
SCORPIO (1.9.1).
and without data compression support)
and lossy compression support using ZFP
Perlmutter and ANL compute nodes
SCORPIO version 1.9.1 includes,
[BFB]