  The evaluation of one-loop matrix elements is one of the main bottlenecks in
precision calculations for the high-luminosity phase of the Large Hadron
Collider. To alleviate this problem, a new C++ interface to the MCFM
parton-level Monte Carlo is introduced, giving access to an extensive library
of analytic results for one-loop amplitudes. Timing comparisons are presented
for a large set of Standard Model processes. These are relevant for
high-statistics event simulation in the context of experimental analyses and
precision fixed-order computations.
