Re: [netcdfgroup] abysmal performance

• To: Ed Hartnett <edwardjameshartnett@xxxxxxxxx>
• Subject: Re: [netcdfgroup] abysmal performance
• From: Dave Allured - NOAA Affiliate <dave.allured@xxxxxxxx>
• Date: Thu, 2 Jun 2016 15:01:13 -0600

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

• Follow-Ups:
  • Re: [netcdfgroup] abysmal performance
    • From: Ed Hartnett

• References:
  • [netcdfgroup] abysmal performance
    • From: Burlen Loring
  • Re: [netcdfgroup] abysmal performance
    • From: Tom Fogal
  • Re: [netcdfgroup] abysmal performance
    • From: Burlen Loring
  • Re: [netcdfgroup] abysmal performance
    • From: Wei-keng Liao
  • Re: [netcdfgroup] abysmal performance
    • From: Dave Allured - NOAA Affiliate
  • Re: [netcdfgroup] abysmal performance
    • From: Ed Hartnett