README.md

TAC: Optimizing Error-Bounded Lossy Compression for Three-Dimensional Adaptive Mesh Refinement Simulations

Step 1 Download SZ

Download and install SZ into SZDir followed by the instructions provided by SZ's repo.

export SZ_HOME=SZDir
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$SZ_HOME/lib

Step 2: Download Data

Download and unzip data or use example data

Method 1: Download all datasets using gdown

• gdown can be easily installed by pip or pip3 install, e.g., pip install gdown.
• Run download-data.sh bash script.

cd data
./download-data.sh

Method 2: Download separate datasets directly from Google Drive

• Run1_Z10: https://drive.google.com/file/d/118ataZqVlCFq5D04MhtTTOBBvVO6DR6B/view?usp=sharing
• Run1_Z5: https://drive.google.com/file/d/1PHMUV6c9K5V9AN-TF_CYf9ROR86oZYSm/view?usp=sharing
• Run1_Z3: https://drive.google.com/file/d/1hEjnw3llHj2P9z3WyrWSQAWqPAQ-LKxy/view?usp=sharing
• Run1_Z2: https://drive.google.com/file/d/1xWwf2_YFDjod0mUIRl1iffj95ZemR4Q6/view?usp=sharing
• Run2_t2: https://drive.google.com/file/d/1xZnts_QRAN5Av3NbBzLzt0FybVafV7JC/view?usp=sharing
• Run2_t3: https://drive.google.com/file/d/1vy3Bry1RmAdXqMNXhwXFWZOzF6bCa7hM/view?usp=sharing
• Rune_t4: https://drive.google.com/file/d/1CeI_nxhU5_rrT2e78Jsy025t5lOmaQAd/view?usp=sharing

Step 3.1: Build Our Compressor

cd src
g++ amrcompressor.cpp -o amrcompressor -I $SZ_HOME/include/ -L $SZ_HOME/lib/ -lSZ -lzstd -lzlib -O3

Step 3.2: Build Baseline & zMesh

cd baseline
g++ naive1D.cpp -o naive1D -I $SZ_HOME/include/ -L $SZ_HOME/lib/ -lSZ -lzstd -lzlib -O3
g++ 3dBaseline.cpp -o 3dBaseline -I $SZ_HOME/include/ -L $SZ_HOME/lib/ -lSZ -lzstd -lzlib -O3
g++ zMesh.cpp -o zMesh -I $SZ_HOME/include/ -L $SZ_HOME/lib/ -lSZ -lzstd -lzlib -O3

Step 4.1: Test Our Compressor & Baseline

./amrcompressor ../data/run2_t3.bin $SZ_HOME/example/sz.config eb_level_0 eb_level_1 eb_level_2 eb_level_3

For example, all AMR levels with the same absolute error bound of 5E+9 for the example Nyx data:

./amrcompressor ../data/run2_t3.bin $SZ_HOME/example/sz.config 5E+9 5E+9 5E+9 5E+9

Step 4.2: Test zMesh

zMesh can only be run on Run1, will be modified for Run2 later.

./zMesh ../data/grid_z10.bin order256.bin $SZ_HOME/example/sz.config eb_level_0 eb_level_1 eb_level_2 eb_level_3

For example, all AMR levels with the same absolute error bound of 5E+9 for the Run1_Z10:

./zMesh ../data/grid_z10.bin order256.bin $SZ_HOME/example/sz.config 5E+9 5E+9 5E+9 5E+9

Results of Run1:

Results of Run2: