Support parallel HDF5

[hyschive]

🎯 Goals

Support parallel HDF5 in dumping and loading simulation snapshots to improve I/O performance.

📋 Mandatory tasks

• Support parallel HDF5 in Output_DumpData_Total_HDF5.cpp
• Support parallel HDF5 in Init_ByRestart_HDF5.cpp
• Backward compatible
  • The file structure of Data_****** should remain the same
  • Support serial HDF5
• Compare the I/O performance in GAMER between serial and parallel HDF5

Optional tasks

• Support parallel HDF5 in Init_ByFile.cpp for loading UM_IC.

References

• Official website

Supplementary info

• GAMER supports parallel I/O when restarting a simulation, controlled by the runtime parameter RESTART_LOAD_NRANK. But it doesn't utilize parallel HDF5.