CPU Performance

[Jennifer Adams]

GrADS runs as a single process on a single core. There is no multi- 
anything in GrADS at this point.
I have never done any benchmarking for 32-bit vs. 64-bit operating  
systems.

John Huddleston (who is mysteriously unable to reply to gradsusr  
posts) has this to offer:

> I am forwarding our analysis of creating GrADS images of NASA  
> satellite data using a 32 bit Ubuntu 8.04 server.
>
The I/O performance for hdf5 data sets is extremely dependent on  
whether/how the data are chunked, and also on the cache size settings  
in the hdf5 library. I am doing some testing to see how to improve the  
hdf5 performance in GrADS for the next release.

--Jennifer

On Nov 10, 2009, at 5:13 AM, Andrew Revering wrote:

> I’m curious if anyone has any performance information with GrADS on  
> a 64 bit OS vs 32 bit OS, and if GrADS is capable of using a multi- 
> core processor?
>
> Is it best to get a fast single core machine, or does it actually  
> utilize all the cores of a multi-core processor?
>
> This may be a stupid question, but I’m fairly new to Linux so I’m  
> not sure if the individual programs need to be programmed to utilize  
> the processor like they do under Windows.
>
> Andy
>
>

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