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Re: [Discuss-gnuradio] Dropped stream tags with mm & pfb clock recovery/

From: Alexander Bothe
Subject: Re: [Discuss-gnuradio] Dropped stream tags with mm & pfb clock recovery/sync blocks
Date: Fri, 22 Aug 2014 14:08:37 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.0

Hello Martin,

as the test source file is about 1.3mb I uploaded everything to the
following URL:

There you will find 3 files:
in:             float trace previously captured
check.py:       script to run the tests
check_md5.py:   script to compute and compare the resulting md5 hashes

./check.py --test pfb in
will perform 100 iterations and create 100 out files out_n (each about
220kb) for the pfb test case.

After it has finished you can run
This will calculate the md5 sums of the previously created files. It
will print a summary of unique md5 sums and create a file called md5
containing some details (file, md5, size).

You should get more than one md5 sum/file size as a result after one
run, but you might need to increase the number of iterations or perform
it 2-3 times.

For reference you can also use the "io" or "mm" test case, which should
produce deterministic results.


On 22/08/14 12:00, Martin Braun wrote:
> Alexander,
> once every year or so a message pops up with someone describing
> non-deterministic behaviour using file sources, but it never gets
> followed up because it's so hard to reproduce.
> Any chance you could provide the actual source files and flow graphs, so
> other people can try this and see for themselves?
> M

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