This is an OP2 port of the original Volna code.

You need to install OP2 (source in this GitHub repository)

• You will need HDF5 (preferably compiled with MPI support)
• You may not need the partitioners PT-Scotch/ParMetis if you do not plan to run in a distributed environment

Check out the Volna-OP2 code from this GitHub repository. The code comprises of two parts, volna2hdf5 which takes configuration files from the original Volna code and dumps all the necessary information to a h5 file which will be used by the second application volna-OP2.

• Type 'make' in sp/volna2hdf5 - note that some warnings will show because of dependencies, you can safely ignore these
• Type make in sp to build all versions of the volna-op2 application
• make volna_seq builds the sequential (single-threaded) version
• make volna_openmp builds the single node multi-threaded version
• make volna_cuda builds the single node GPU version
• make volna_mpi builds the sequential MPI version with a single thread executing on each MPI process
• make volna_mpi_openmp builds the MPI+OpenMP version
• make volna_mpi_cuda builds the MPI+CUDA version

To use volna-OP2 with the *.vln configuration files, first you have to use volna2hdf5, e.g.

• ./volna2hdf5 gaussian_landslide.vln which will output a gaussian_landslide.h5 file Afterwards, call volna-op2 with the above input file, e.g.:
• ./volna_openmp gaussian_landslide.h5
• when using the CUDA version we suggest adding "OP_PART_SIZE=128 OP_BLOCK_SIZE=128" to the execution line

Some restriction, constantly updated as they are fixed:

• Currently Volna does not work well with MPI, and there is no support for distributed file output (e.g. OutputSimulation or OutputLocation into files).
• Refrain from using OutputSimulation too often because (compared to the actual simulation) it may take a lot of time.
• When using large h5 files, try compressing them, e.g. h5repack -i gaussian.h5 -o gaussian_compressed.h5 -f GZIP=9