Reply To: Extract velocity, pressure, and density data on lattices without interpolation
OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Extract velocity, pressure, and density data on lattices without interpolation › Reply To: Extract velocity, pressure, and density data on lattices without interpolation
first, please check that you’re using an appropriate instance of OstreamManager in order to write parallel output only once.
The input array is expected to be of the form [iCuboid, iX, iY] (resp. [iCuboid, iX, iY, iZ] in three dimensions, cf. the functor chapter in the user guide). Then, a frequent source for segfaults is that the data on cuboid iCuboid are only available on the corresponding rank. Hence, you have to check for the rank before you access the data. Another possible error source is that the cuboids do not necessarily have the same size (-> possible index error).
The available output options do all respect these typical issues and they all write the data in some csv form into text files (+ some additional information on the form of the data). Hence, if I were you, I would check whether the output in these formats can be fit to your context.
Btw. what exactly do you mean be metadata?