Re: [Discuss-gnuradio] No change when set_processor affinity() is used

[Marcus Müller]

What Marcus said; GNU Radio 3.6 with its default scheduler, which is aptly named thread-per-block scheduler, automatically runs every block in its own thread, and by default (ie. unless you explicitely specify affinity) lets the OS handle distribution to CPUs; that's the reason GNU Radio applications tend to scale very well on multiple CPUs, even if the algorithms in the individual blocks are not heavily multithreaded.

Greetings,
Marcus

On 05/12/2015 06:33 PM, Marcus D. Leech wrote:

On 05/12/2015 12:25 PM, Nemanja Savic wrote:

Hi all guys,

I have a flowgraph where I have three parallel paths for filtering signal stored in a file. Here the picture of my flowgraph:

I use gnuradio 3.6.5.1. When I run the script it uses only one processor, and since I have 4 cores, I would like to run every of the paths on another processor. For every filter I do set_processr_affinity[some number between 0 and ]. When I run the script nothing changes, it still runs on a single core. Am I missing something with set_processor_affinity method?

Best,

--

Nemanja Savić

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My guess is that your ~/.gnuradio/config.conf   specifies to use the single-threaded scheduler.

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