  We present a novel event generation framework for the efficient simulation of
vector boson plus multi-jet backgrounds at the high-luminosity LHC and at
possible future hadron colliders. MPI parallelization of parton-level and
particle-level event generation and storage of parton-level event information
using the HDF5 data format allow us to obtain leading-order merged Monte-Carlo
predictions with up to nine jets in the final state. The parton-level event
samples generated in this manner correspond to an integrated luminosity of
3ab-1 and are made publicly available for future phenomenological studies.
