====== HACC_IO ====== ---- dataentry benchmark ---- name : HACC_IO layers_ttags : POSIX, MPI-IO features_ttags : data parallel_ttags : MPI type_ttags : synthetic license_ttag : webpage_url : https://github.com/glennklockwood/hacc-io/ ---- HACC_IO is a IO-performace benchmark. It uses a n-body simmulation, to simulate collisionless fluids in space. ===== Usage ===== After downloading and compiling with make CXX=mpicc you can run the benchmark with mpirun -np ./HACC_IO ===== Example Output ===== Here are some example runs: 1 Process mpirun -np 1 ./HACC_IO 10000000 mpitest -------- Aggregate Performance -------- WRITE Checkpoint Perf: 629.866 BW[MB/s] 405165824 Bytes 0.613458 MaxTime[sec] -------- Aggregate Performance -------- READ Restart Perf: 936.398 BW[MB/s] 405165824 Bytes 0.412641 MaxTime[sec] CONTENTS VERIFIED... Success 4 Processes mpirun -np 4 ./HACC_IO 10000000 mpitest -------- Aggregate Performance -------- WRITE Checkpoint Perf: 153.236 BW[MB/s] 1545165824 Bytes 9.61643 MaxTime[sec] -------- Aggregate Performance -------- READ Restart Perf: 1292.3 BW[MB/s] 1545165824 Bytes 1.14028 MaxTime[sec] CONTENTS VERIFIED... Success