root-roofit-batchcompute Subpackage of root

While fitting, a significant amount of time and processing power is spent on computing the probability function for every event and PDF involved in the fitting model. To speed up this process, roofit can use the computation functions provided in this library. The functions provided here process whole data arrays (batches) instead of a single event at a time, as in the legacy evaluate() function in roofit. In addition, the code is written in a manner that allows for compiler optimizations, notably auto-vectorization. This library is compiled multiple times for different vector instuction set architectures and the optimal code is executed during runtime, as a result of an automatic hardware detection mechanism that this library contains.

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