HDF5_DEBUG

A HDF5 user attempted to run an application that generated 100,000+ lines of error messages that he wasn’t concerned about (because the application is fully functional). After looking at:
http://www.hdfgroup.org/HDF5/doc/H5.user/Debugging.html
I recommended he set:
export HDF5_DEBUG=“-all”
and then enable specific message types that he cares about. He attempted this and reported that it didn’t change his error log ? Did I advise him correctly ? Thanks for any advice.

Sean B.