5.8 FieldConvert for parallel-in-time

To run FieldConvert in parallel the user needs to compile Nektar++ with MPI support and can employ the following command

mpirun -np <nprocs> FieldConvert --npt <nprocs> test.xml \ 
               in/test\_<n>.fld out/test\_<n>.vtu
mpirun -np <nprocs> FieldConvert --npt <nprocs> test.xml \ 
               in/test\_<n>.fld out/test\_<n>.dat

replacing <nprocs> with the number of processors and <n> by the starting time index. FieldConvert will then process in parallel time solutions test_<n>.dat to test_<n>+<nprocs>.dat.