Version 1.4.0 (native implementation)
ADDED
- Add utility tools pepper-h5show and pepper-h5edit to inspect, filter and shuffle LHEH5 files
([!173](https://gitlab.com/spice-mc/pepper/-/merge_requests/173),
([!175](https://gitlab.com/spice-mc/pepper/-/merge_requests/175),
([!196](https://gitlab.com/spice-mc/pepper/-/merge_requests/196))
- Add `n_max_quark_pairs` setting
([93eb6a5d](https://gitlab.com/spice-mc/pepper/-/commit/93eb6a5d2edbf2778f19f34ac35e8e5afc0e6929))
- Add new "a:b:c" format for `device_id`, where "a", "b" and "c" are non-negative integers.
The resolved device identifier is then evaluated as $a + (rank\_id * c) % b$,
where "rank\_id" is the MPI rank number.
([!178](https://gitlab.com/spice-mc/pepper/-/merge_requests/178))
- Add support for an embedded Kokkos installation to simplify installing Pepper
([!201](https://gitlab.com/spice-mc/pepper/-/merge_requests/201))
FIXED
- Fix time-per-event output issue
when generating more than $2^31$ trial events
([3b5ebf7e](https://gitlab.com/spice-mc/pepper/-/commit/3b5ebf7e6b55837e9df4f24e84d7dc37c5fdeb68))
- Fix phase-space biasing bugs
([!183](https://gitlab.com/spice-mc/pepper/-/merge_requests/183),
[!193](https://gitlab.com/spice-mc/pepper/-/merge_requests/193),
[!195](https://gitlab.com/spice-mc/pepper/-/merge_requests/195))
- Add missing cross section entry in HepMC3 event output
for unweighted event generation
([!183](https://gitlab.com/spice-mc/pepper/-/merge_requests/183))
- Fix weight maxima read-in ordering bug for processes
with more than one subprocess
([5745f4d3](https://gitlab.com/spice-mc/pepper/-/commit/5745f4d3f92ce591bd20b88b0db1c007baf346a3))
- Fix process file vs. flavour spec heuristics
([!171](https://gitlab.com/spice-mc/pepper/-/merge_requests/171))
- Update process setting documentation in defaults.ini example
([069c91c7](https://gitlab.com/spice-mc/pepper/-/commit/069c91c70b4fe19555ab69be1a5824e5fa19d936))
- Add missing device-specific batch size MPI sync,
which otherwise defaulted to 1 for all MPI ranks other than main
([!181](https://gitlab.com/spice-mc/pepper/-/merge_requests/181))
- [main] Fix the logic for enabling VCL support.
Accidentally, it was unconditionally disabled in all cases.
Now it is enabled per default when CUDA is not used.
([!183](https://gitlab.com/spice-mc/pepper/-/merge_requests/183))
- Add missing PDF info in HDF5/LHEH5 output.
([!198](https://gitlab.com/spice-mc/pepper/-/merge_requests/198))
CHANGED
- Increase LHEH5 output file format version to 2.1.0. All attribute container
keys are now called "properties". Previously the attribute container for the
dataset "events" was also called "events".
([!173](https://gitlab.com/spice-mc/pepper/-/merge_requests/173))
- Enforce a minimum selection weight for distinct flavour processes
during the event unweighting optimisation. This makes sure
that less additional iterations are needed to find results
for all distint flavour processes.
([!188](https://gitlab.com/spice-mc/pepper/-/merge_requests/188))
- Change VEGAS dampening factor ("alpha") default from 1.0 to 0.8
to improve its numerical stability
([!188](https://gitlab.com/spice-mc/pepper/-/merge_requests/188))
- Change integration defaults to the following new values:
```ini
[phase_space.optimisation]
n_iter = 15
n_nonzero_min = 10000
n_nonzero_min_growth_factor = 1
[phase_space.integration]
n_iter = 3
n_nonzero_min = 50000
n_nonzero_min_growth_factor = 1
```
Before, a growth factor was used during optimisation,
but the benefit was not clear.
([!188](https://gitlab.com/spice-mc/pepper/-/merge_requests/188))
- Show unbiased cross section in output when using phase-space biasing
([!183](https://gitlab.com/spice-mc/pepper/-/merge_requests/183))
- Do not automatically enable `cppcheck` support during configuration.
Instead, use `-DPEPPER_CPPCHECK_ENABLED=1` to enable it.
([!183](https://gitlab.com/spice-mc/pepper/-/merge_requests/183))