HepSim is optimized to keep truth-level in the “archive” format called ProMC. It allows to keep data in a compact form optimized for data streaming over the network, together with logfiles which will help to identify the MC settings.

ProMC files can be created directly by Pythi8 (the example “main46.cc” in the Pythi8). Or, you can convert files in the format “HEPMC”, “LHE”, “STDHEP” to ProMC as shown in the “example” directory of the installed ProMC package (look at $PROMC/examples). The converters are:

• hepmc2promc
• lhe2promc
• stdhep2promc

Look at the ProMC manual for more examples.

— Sergei Chekanov 2016/04/27 09:24