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Re: [Discuss-gnuradio] PDU to Tagged Stream with BIG PDUs

From: Bastian Bloessl
Subject: Re: [Discuss-gnuradio] PDU to Tagged Stream with BIG PDUs
Date: Mon, 14 Mar 2016 17:26:33 -0700


> On 14 Mar 2016, at 16:56, Francisco Albani <address@hidden> wrote:
> I wrote a custom message block that produces a PDU with complex samples. My 
> plan is to connect it to a PDU to Tagged Stream and then to a UHD Sink (with 
> len_tag_name = 'packet_len').
> The goal is to transmit a burst for each packet. This packets are made of 
> approximately 14k samples and sometimes more.
> I'm unable to do this because of this error:
> thread[thread-per-block[1]: <block pdu_to_tagged_stream (2)>]: Buffer too 
> small for min_noutput_items
> I tried rising the PDUtoTaggedStream block min/max output buffer size to its 
> maximum values with no success.
> Attached is the minimum equivalent flowgraph that shows the same problem.
> Is this a Scheduler hardcoded limitation?
> Anybody knows a workaround?

the Tag Debug and Null Sink seem to not have an interface for adjusting the 
buffers, but if I add it (manually) to the python file, it works for me



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