Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision | ||
|
hepsim:files [2018/08/01 11:12] hepsim17 [LCIO file format] |
hepsim:files [2018/08/30 01:07] (current) hepsim17 |
||
|---|---|---|---|
| Line 10: | Line 10: | ||
| It uses varints for integer values (and, by design, for 4-momenta and vertex). | It uses varints for integer values (and, by design, for 4-momenta and vertex). | ||
| It's efficient format for events with large number of particles. | It's efficient format for events with large number of particles. | ||
| - | The file sizes are typically 30% smaller than traditional ROOT with fixed bytes for floats and integer values. | + | The file sizes for EVGEN files are typically 30% smaller than for traditional ROOT files (with fixed bytes for floats and integers). |
| + | The file format is self-describing. Suported by C++, Java/Jython (read/ | ||
| <fc #000080> | <fc #000080> | ||
| - | Supported by hs-toolkit and Jas4PP</fc> | + | Supported by: </ |
| ===== ProIO file format ===== | ===== ProIO file format ===== | ||
| - | [[https:// | + | [[https:// |
| It is more efficient file format than ProMC when the number of events in the files larger than 64k, | It is more efficient file format than ProMC when the number of events in the files larger than 64k, | ||
| - | and when number of particles in files is not large. For Monte Carlo records, the files created by ProIO are about 10-20% smaller in size than those from ProMC. ProIO files can be used with C++, Python, Java/ | + | and when number of particles in files is not large (<100). For the latter |
| + | For pp collision events with large number of particles, ProMC and ProIO have same file sizes when | ||
| + | ProIO use mc.proto files with VarintPackedParticles messages (arrays with 4-momenta converted to varints). | ||
| + | See some tests in http:// | ||
| - | <fc #000080> | ||
| - | Supported by hs-toolkit and Jas4PP</ | ||
| + | |||
| - | ===== ROOT file format ===== | ||
| - | ROOT files are used to keep fast detector simulations from Delphes | + | |
| + | <fc # | ||
| + | Supported by: </ | ||
| Line 37: | Line 42: | ||
| <fc #000080> | <fc #000080> | ||
| - | Supported by Jas4PP</ | + | Supported by Jas4PP</ |
| + | |||
| + | |||
| + | |||
| + | ===== ROOT file format ===== | ||
| + | |||
| + | ROOT files are used to keep fast detector simulations from Delphes | ||
| + | |||
| + | |||
| ===== LHE file format ===== | ===== LHE file format ===== | ||
| LHE file formats are typically used for parton-level events from Madgraph. | LHE file formats are typically used for parton-level events from Madgraph. | ||