I see that the problem is the occurrence of floating point exceptions. Please indicate what kind of machine and operating system you are using as we normally don't see those kinds of errors (they get converted to nan/inf values). in any case: 1. this is a testing error. use "make -i check" to force make to complete all the tests and see if the floating point errors are the only failure. If so, then I would'nt worry about this. 2. You should consider moving to, say, netcdf version 4.1.3. =Dennis Heimbigner Unidata Ticket Details =================== Ticket ID: KKS-961190 Department: Support netCDF Priority: Normal Status: Closed