SYCL examples

Some simple SYCL code examples.

N-body Maxwell-Boltzmann distribution

Uses N-body simulation to approximate Maxwell-Boltzmann distribution.

Maxwell_Boltzmann_distribution.mp4

Notes

Another implementation written in PyTorch can be found here. I found an issue with that code. The total energy do not remain constant over time due to multiple collisions per particle at an iteration.

For my SYCL implementation, I resolved that with allowing only one collision per particle at an iteration.

Ripple

SYCL rewrite of CUDA code in the "CUDA By Example" book.

ripple.mp4

Notes

The update_host member function can be very useful when we have a loop where a buffer is used repeatedly and we need the host data to update at each iteration. Since we cannot destroy a buffer in the loop, the only way of forcing the update is to use update_host.

Julia set

SYCL rewrite of CUDA code in the "CUDA By Example" book.

Ray tracing

SYCL rewrite of CUDA code in the "CUDA By Example" book.

build and run

A SYCL compiler is required to compiler SYCL code. A normal C++ compiler would not work. See https://sycl.tech/ for more information.

This is built with the SYCL compiler from Intel.

cd into the directory of the example, then run the following in shell

cmake -DCMAKE_BUILD_TYPE=Release -S . -B ./cmake-build-release
cmake --build ./cmake-build-release --target <target_name> -j
cmake-build-release/<target_name>