Re: [Discuss-gnuradio] How to use a single-threaded scheduler

[Bogdan Diaconescu]

Interesting results at least for situations when the queue is before/after FFT. It is like the queue is starving the FFT. You could try to see what is the actual data that the scheduler passes to the FFT and the other blocks in each cases. From my experience, the smaller the chunks are the slower the flowgraph is (I guess an obvious discovery :) )

Bogdan

On Monday, March 31, 2014 10:07 PM, Marcus Müller <address@hidden> wrote:

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That environment variable is "GR_SCHEDULER":

> git grep getenv
...
gnuradio-runtime/lib/top_block_impl.cc:char *v = getenv("GR_SCHEDULER");
...

and you need to set it to "STS":

export GR_SCHEDULER=STS
./my_gr_flowgraph.py


Greetings,
Marcus


On 31.03.2014 18:49, Bogdan Diaconescu wrote:
> On older gnuradio releases there was an environment variable to set
> so that it will switch to single threaded scheduler. Cannot
> remember the name, though.
>
> Bogdan
>
>
>
>
>
> On Monday, March 31, 2014 7:35 PM, Tommy Tracy II
> <address@hidden> wrote:
>
> Dear list,
>
> Is there any way to use the single-threaded scheduler over the
> thread-per-block scheduler without rebuilding Gnu Radio?
>
> Sincerely,
>
> Tommy James Tracy II Ph.D Student High Performance Low Power Lab
> University of Virginia Phone: 913-775-2241
>
> _______________________________________________ Discuss-gnuradio
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