Re: [netcdfgroup] abysmal performance

[Dave Allured - NOAA Affiliate <dave.allured@xxxxxxxx>]

On Thu, Jun 2, 2016 at 2:41 PM, Ed Hartnett <edwardjameshartnett@xxxxxxxxx>
wrote:

> I don't think the fact that it is an unlimited dimension should make it
> any slower, either in classic
>

<snip>

 Ed, I have experienced this slow down many times with Netcdf-3 classic.
As I said earlier, if the format is classic, then a coordinate variable on
the unlimited dimension is scattered throughout the file.  This is
confirmed in the Users' Guide.  At the low level, many disk blocks must be
read to get the complete coordinate array.

--Dave