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Re: NetCDF manual in Japanese
- Subject: Re: NetCDF manual in Japanese
- Date: Fri, 17 Aug 2001 10:53:29 -0600
Russ,
>Date: Fri, 17 Aug 2001 10:40:36 -0600
>From: Russ Rew <address@hidden>
>To: address@hidden (Masato Shiotani)
>Subject: Re: NetCDF manual in Japanese
The above message contained the following:
> > "This is a two layer cache. The first (synchronous) layer is composed
> > of 256 8-block buffers in memory, the second (asynchronous) layer is
> > composed of 4 1024-block buffers on the SSD. This scheme works well
> > when accesses proceed through the dataset in random waves roughly
> > 2x1024-blocks wide."
> >
> > What is "random waves"? Is this a special method to access buffers?
>
> Steve Emmerson wrote this. I'll try to get him to provide a simpler
> description or explain what is meant by "random waves", since I don't
> understand it either.
The late Glenn Davis wrote this. I believe that it means that access to
the data is relatively random on a large scale but relatively sequential
on a small scale. For the above example, imagine accessing the data in
random segments -- where a segment is 2 1024-byte blocks of data -- but
within a segment, accessing the data sequentially.
--
Regards,
Steve Emmerson <http://www.unidata.ucar.edu>
