Barré, Sacha

Cui, Yangyang

Davis, Adam C. S.

Evans, Keith L

Gersabeck, Marco

Montazeri, Zahra

Rat, Antonin

English

Optical photon propagation is an embarrassingly parallel operation, well suited to acceleration on GPU devices. Rendering of images employs similar techniques -- for this reason, a pipeline to offload optical photon propagation from Geant4 to the industry-standard open-source renderer Mitsuba3 has been devised. With the creation of a dedicated plugin for single point multi-source emission, we find a photon propagation rate of $2\times10^{5}$ photons per second per CPU thread using LLVM and $1.2\times10^{6}$ photons per second per GPU using CUDA. This represents a speed-up of 70 on CPU and 400 on GPU over Geant4 and is competitive with other similar applications. The potential for further applications is discussed

The University of Manchester - Institutional Repository

Optical Photon Simulation with Mitsuba3

https://pure.manchester.ac.uk/ws/files/278943281/2309.12496v1.pdf

Optical Photon Simulation with Mitsuba3

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The University of Manchester - Institutional Repository