Re: [netcdfgroup] nf90_char size

• To: netCDF Mail List <netcdfgroup@xxxxxxxxxxxxxxxx>
• Subject: Re: [netcdfgroup] nf90_char size
• From: Aleksandar Jelenak <ajelenak@xxxxxxxxxxxx>
• Date: Fri, 15 May 2020 18:22:04 +0000
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Hi John,

On May 15, 2020, at 12:56 PM, John Buonagurio 
<jbuonagurio@xxxxxxxxxxxx<mailto:jbuonagurio@xxxxxxxxxxxx>> wrote:

(Side note: OFFSET 18446744073709551615 is ULLONG_MAX (2^64 - 1), I don't
know why h5dump prints that.)

In HDF5 the HADDR_UNDEF constant has the value ULLONG_MAX (2^64 - 1). So what 
h5dump is telling with:

>       STORAGE_LAYOUT {
>          CONTIGUOUS
>          SIZE 0
>          OFFSET 18446744073709551615
>       }

is that the HDF5 dataset was created but no data for it was written to the file.

I agree that h5dump’s output should have something more friendlier than the 
integer value itself.

-Aleksandar

• References:
  • Re: [netcdfgroup] nf90_char size
    • From: John Buonagurio