[Gate-users] Performances: vGate vs Gate on macOS

[Antoine Merlet]

Dear Gate users,

I have compiled the latest develop version of Gate with Geant4-10.05.p01
under macOS Mojave. Previously using vGate on the same MacBook, I was
hoping for decreased simulation time after removing the virtual machine
intermediary. However, tests shows nearly no differences - vGate is even a
bit faster - regardless of the simulation duration (minutes / dozens of
hours).

Therefore, I would like to know if anyone had similar experiences, and if
this kind of results are to be expected. Also, is there any way of
increasing the performances of Gate on macOS by optimizing the compilation
parameters?

You can find enclosed a simple test file which has been adapted from
GateContrib Cylindrical PET example (https://github.com/OpenGATE/GateContrib
/tree/master/imaging/PET). The resulting simulation time is 8min44s when
using vGate and 8min50sec when using Gate under macOS.

Best regards,
Antoine
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