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12 Formats and Performance
Implications of format on performance. Performance tips and pitfalls.

12.0  NetCDF Format Versions
There are several ways to represent netCDF data.
12.1  Parts of a File in Classic Format
A netCDF classic or 64-bit offset file is stored in three parts.
12.2  Classic File Format
Understanding the netCDF classic format can make clear why modifying the schema of an existing netCDF file may be expensive.
12.3  Benchmark Example
Example benchmark of netCDF copy program, implemented two ways.
12.4  Classic API Performance Tips
Avoid premature optimization: worry about performance only after you determine netCDF I/O is a bottleneck.
12.5  Using Less Space for Data
Using less disk space for your data can also reduce access time.
12.6  Using Less Time for Data Access
If netCDF access time is a bottleneck, these techniques may help.
12.7  Format and Performance Issues for Discussion
Excerpts from reviewers comments on the NASA netCDF standards RFC.

 


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