On 01/25/2014 02:59 PM, Miklos Maroti wrote: > Hi Martin, > > But the buffers are already allocated, and I assume that they are not > resized dynamically. So even if you change the relative rate at > runtime, you will get into the "sched: <xxx> is requesting more input > data than we can provide" error. So I do not understand how the > scheduler is going to use the relative rate info WHILE the flowgraph > is running. I assume it uses only the forecast method only, no?
Miklos, no, buffers aren't changed. The scheduler uses relative_rate() for a couple of things: To guess good values for noutput_items and input buffers (only for sinks, IIRC), also for automatic tag propagation. The standard gr::block() implementation assumes a 1:1 relationship in forecast(), regardless of relative_rate(). There are other things that are considered, such as set_output_multiple(). You can use relative_rate() yourself, too, e.g. in forecast(). MB _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
