GPU Solve

Code from my masters thesis. Solves a 3D system of linear equations on the CPU and GPU using SYCL.

The sycl solver mainly uses the ProGTX/sycl-gtx library to compile the SYCL kernels to OpenCL kernels during execution. The library is included in this project in the extern/sycl-gtx folder. I have modified some parts of the code to improve performance.

Build

git clone https://github.com/Bricktricker/gpu-solve.git
mkdir build && cd build
cmake .. -DCMAKE_BUILD_TYPE=Release
make GpuSolve-cpu GpuSolve-gtx

If you want to use a diffrent SYCL implementation, build the GpuSolve-sycl target and adjust the compiler settings beforehand.

Usage

After building, the executables can be found in the build/src/ directory. Launch the application with ./GpuSolve-cpu <path/to/config>.

The config file describes the problem structure, an example can be found at examples/data-2nd_order.conf. Description of the config file lines:

1. Number of v-cycles
2. Tolerance, currently unused
3. X dimension of the grid
4. Y dimension of the grid
5. Z dimension of the grid
6. Switch between linear (0), non-linear (1) and Newton (2) problem
7. Number of pre-smoothing steps
8. Number of post-smoothing steps
9. Relaxation coefficient
10. Gamma for the non-linear part
11. The seven stencil values, seperated by space
12. Stencil value offsets in the X direction
13. Stencil value offsets in the Y direction
14. Stencil value offsets in the Z direction