Re: [Discuss-gnuradio] sched is requesting more input data than we can provide

[Miklos Maroti]

Hi Marcus,

On Thu, Jan 23, 2014 at 10:12 PM, Marcus Müller <address@hidden> wrote:
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> Hi Miklos,
>
> the problem here is xxx:
>
> On 23.01.2014 22:00, Miklos Maroti wrote:
>> sched: <xxx> is requesting more input data
>
> what's this xxx? It is requiring 16000 input items at once *at least*
> and that's nearly twice the max output size (see
> gnuradio-runtime/lib/block_executor.cc), and you're right, that has
> something to do with maximum buffer sizes.
> However, GNU Radio has algorithms to appropriately set up buffers to
> make the items flow. Unless you've configured the top_block
> explicitely to have max noutput items < 16000, that should work out
> unless there is some architectural quirk in your flowgraph that
> actually suggest that it /can't/ run.

I did not set anything explicitly, although I did not set in my xxx
block the set relative rate (maybe that is used by the scheduler to
set up the buffer sizes appropriately).

Basically I want to take 100 packets of size 160 and push them through
an S/P converter for an 128 point IFFT (think of OFDM where every
subcarrier would carry its own packets independently).

Miklos


>
> So, to help you out, we actually need a little more information.
> Most probably an architectural change to xxx or your flowgraph will
> solve your problem.
>
> Greetings,
> Marcus
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