Ryan M. Bergmann, 2014.
WARP is a GPU-powered library for continuous energy Monte Carlo neutron transport in general 3D geometries. The host-side code has been written in C++, CUDA, and Python. The C++ API is exposed to Python via SWIG. The Python C API is used within WARP to load ACE-formatted cross section libraries via the PyNE package. Geometry routines are implemented using the NVIDIA OptiX ray tracing framework. Currently, WARP is only able to run on a single NVIDIA GPU.
If the name "WARP" were an acronym, it would stand for "weaving all the random particles," with the word "weaving" referring to the lock-step way in which "all the random particles," i.e. the neutrons, are sorted into coherent bundles and transported. Using the word "warp" is also a nod to NVIDIA's terminology for a group of 32 concurrent threads.
Please refer to the usage guide for examples of how to use WARP, and to the doxygen documentation for detail descriptions of the API.
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