vizaly-hélios

SUMMARY

hélios is a research code for large cosmological dataset compression.
It relies on particle clouds categorization or filtering, and includes three tools:

• compress: inflate or deflate distributed particle datasets, forked from cbench.
• combine: merge distributed particle datasets.
• analysis: compute entropy, filter and extract non-halos and generate plot scripts.

USAGE

hélios can be built on Linux or macOS using CMake.
It requires a C++17 compiler and MPI as well.
It relies on a set of compression kernels with can be built from here.
They require gsl, zlib and fftw libraries.
Their installation paths should then be saved within environment variables.

export SZ_INSTALL_DIR="/path/to/foo"           # save 'sz' compressor installation path
mkdir build && cd build                        # avoid in-source builds
cmake -DENABLE_SZ=ON ..                        # enable all kernels you want
make -j                                        # use multiple compilation jobs 
mpirun -np 4 ./tool params.json                # tool=[compress|combine|analyzer]

Tools parameters are supplied through a JSON file.

SCOPE

hélios is part of the vizaly project.

License

It is an open source software available under the BSD-3 license.
(c) 2019, Los Alamos National Laboratory. All rights reserved.
See the license file for more details.