Reminder: x85_64 Multithreading / GrADS on SMP machines

[Jennifer Adams]

GrADS in its current form does not support multi-threading. The thing
to do is have multiple instances of GrADS running at the same time.
Divide your chart rendering into sections and generate images in
parallel.
--Jennifer



On Aug 24, 2009, at 4:17 AM, Stefan Gofferje wrote:

> Hi all,
>
> I have a new machine for my chart rendering which has a AMD Phenom
> triple core processor and I'm using the grads-2.0.a6-bin-RHEL4-x86_64
> package from IGES FTP.
> The normal load of the machine is 3 when GrADS is not running and 4
> when
> the rendering runs. According to my statistics, the CPU load never
> goes
> over 30-something percent when GrADS is running. That makes me suppose
> that GrADS does not support multithreading.

>
> Stats:
> http://www.saakeskus.fi/images/kload.png
> http://www.saakeskus.fi/images/kcpustat.png
>
> As chart-rendering is a very CPU-intensive thing, I think,
> multithreading would be a very practical thing as most modern machines
> have multicore CPUs... Especially if you are rendering roughly 3500
> charts every 6 hours :).

> Terve,
> Stefan
>
> --
> Last words of a stormchaser:
> "Where is that rotation on the radar?!"

--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org



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