Known issues

Asynchronous output

Some MPI versions have issues (i.e. deadlocks or crashes) with threading and IO functionality; especially the Hdf5 library.

The MPI-IO implementation is either not threadsafe or too strict when it comes to locking. This can lead to crashes or deadlocks when using the asynchronous output.

A workaround is to either use the POSIX backend for the Xdmf writer module, or to set ASYNC_MODE=sync instead of ASYNC_MODE=thread.

“Holes” in the fault output

“Holes” in the fault output may appear if the reference point or reference vector, defined by (Xref, Yref, and Zref) is wrongly located (point exactly on the fault, or null vector).