They always align at the beginning. The file size difference is really just
because due to the nature of general purpose hardware and GNU Radio's
scheduling, there's no guarantee all blocks have written the same amount of
data when you kill the flow graph.
Am 18. Juli 2016 17:46:13 MESZ, schrieb avinash kalyanaraman
<[email protected]>:
>Thanks Martin.
>
>Is there any particular reason why I see different file sizes for the
>former (file-sink) case? I ctrl+c the hand edited python file to stop
>sample collection. The file sinks are unbuffered. Since they are of
>different sizes, is there a way to know which samples align in time ?
>
>Thanks!
>
>On Fri, Jul 15, 2016 at 5:30 PM, Martin Braun <[email protected]>
>wrote:
>
>> This'll work. However, the uhd_rx_cfile utility that comes with GNU
>> Radio will do that for you.
>>
>> Cheers,
>> M
>>
>> On 07/15/2016 11:33 AM, avinash kalyanaraman wrote:
>> > Hi all,
>> >
>> > I want to analyze the I/Q samples of 3 synchronized USRPs
>(connected to
>> > an Octoclock G). I have synchronized the USRPs according to
>> > http://files.ettus.com/manual/page_sync.html (i.e. I hand-modified
>the
>> > python file generated by GRC).
>> >
>> > I am feeding the output of my USRP Source block (with 3 channels
>and 3
>> > motherboards) to three file sink blocks. Would this be enough to
>save my
>> > synchronized I/Q samples ?
>> >
>> > I notice that the size of the three files (storing the I/Q samples)
>> > aren't the same after my run.
>> >
>> > Attached is also a screenshot of the GRC file.
>> >
>> > Thanks!
>> >
>> > --
>> > Avinash
>> >
>> >
>> > _______________________________________________
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>> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>> >
>>
>>
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>
>
>
>--
>Avinash
>
>
>------------------------------------------------------------------------
>
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