Xdmf writer serial with xdmfdiff
OGS now supports XDMF File format as output. This current state of XDMFWriter contains no optimizations. Parallel writing of XDMF is not (yet) supported.
To use change inside prj -File from:
<timeloop><output><type>VTK</type>
to:
<timeloop><output><type>XDMF</type>