#534: Checkpointing fails on LoneStar ---------------------+------------------------------------------------------ Reporter: hinder | Owner: eschnett Type: defect | Status: new Priority: major | Milestone: Component: Carpet | Version: Resolution: | Keywords: CarpetIOHDF5 ---------------------+------------------------------------------------------
Comment (by eschnett):
There are two reasons why Carpet calls MPI during output. The first is for testing that the value of DISTRIB=constant grid arrays is the same on all processes; if not, a warning is output. This is probably what you are seeing here. The second is to ensure that all MPI processes have successfully finished closing the output files before the previous checkpoint files are deleted.
It seems that Lonestar cannot handle a simple MPI_Bcast operation. This would indicate a problem with the MPI setup there. You could either look at Lonestar's documentation and compare it to the option list and run script you are using, or contact their help desk and ask for advice.