WARNING: This code is mostly deprecated. Have a look at ppkMHD

Magneto Rotational Instability simulation in a shearing box setup (800x1600x800) made in 2013 on TGCC/CURIE using 256 GPUs. Here Reynolds number is 25000 and Prandtl number is 4.

RamsesGPU code

RamsesGPU website

http://www.maisondelasimulation.fr/projects/RAMSES-GPU/html/index.html

• See doxygen-generated documentation in doc sub-directory

Quickstart for building RAMSES-GPU using CMake

Default CUDA compilation flags can be passed to cmake using env variable CUDAFLAGS, or directly set CMAKE_CUDA_FLAGS on the configuration command line (see below).

# step 0:
git clone https://github.com/pkestene/ramsesGPU.git

# step 1:
cd ramsesGPU; mkdir build

# step 2:
cmake -DUSE_CUDA=ON -DUSE_MPI=ON -DCMAKE_CUDA_ARCHITECTURES=75 ..

# step 3:
make -j 8

Please, note that if you use a more recent version of cmake (>= 3.24), at step 2, you can use -DCMAKE_CUDA_ARCHITECTURES=native and cmake will auto-detect the GPU architecture on the build host.

You should get executable ramsesGPU_mpi_cuda. Explore other flag using the ccmake user interface.

This will build the monoCPU / monoGPU version of the programme to solve hydro/MHD problems. Executable are located in src subdirectory and named ramsesGPU_cpu / ramsesGPU_cuda

Execute a test run:

cd src
./ramsesGPU_cuda --param ../data/jet2d_gpu.ini

This will start a Hydrodynamics 2D jet simulation run. Output files can be in multiple file format (VTK, Hdf5, ...).

To visualize Hdf5 output, just run:

paraview --data=./jet2d_gpu.xmf

Contact, questions, comments:

pierre.kestener at cea.fr