Matt, It does not take much time at these low energies. Let's look at 30ms / 50MeV. So at 3 GeV in the barrel we are at 1.8 seconds. Not prohibitive I guess, but it is a rather substantial factor. When we go to G4 I expect something like another factor 2 more cpu per shower GeV. Point is, if we need to we can always buy another factor 2 of simulation hardware. Maybe we need some criteria. There is a similar issue in the forward showers (effective response vs. Cerenkov following). The cpu cost for tracking there is on the same order of magnitude: ~0.5s / GeV. Richard J. Matthew Shepherd wrote: > > Hi Blake and Richard, > > If the full simulation of the fibers/shower in the BCAL only takes > 0.03 seconds per event, what is the argument for not building this > directly into the mainstream GlueX simulation instead of trying to > parametrize these effects? > > -Matt >
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