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Juergen, Here's the response I got from the author of the netCDF package about your problem. I hope it helps. --Steve ------- Forwarded Message From: "Glenn P. Davis" <address@hidden> Date: Thu, 25 Feb 1999 12:08:31 -0700 In-Reply-To: Steve Emmerson <address@hidden> "wierd AIX netCDF problem" (Feb 25, 8:46am) To: Steve Emmerson <address@hidden> Subject: Re: wierd AIX netCDF problem We talked about this when it was submitted. I haven't looked at it yet, and I probably won't for some time. Suggestion: Have him use the nc__open or nc__create interface and use a different value for chunksizehint than the system default. If he has a problem with a common value, like 8192, then we know it is a problem with AIX, not netcdf. If the problem goes away, it is probably a problem in the netcdf. Of course, I'm telling people to stop writing code that uses redef. It won't necessarily work with other file implementations. - -glenn ------- End of Forwarded Message