Re: [Linrad] Fw: linrad 3.48 and raspberry pi + fifi-sdr

[rei...@ix.netcom.com]

Hi Leif,

Found this by accident:

http://www.kickstarter.com/projects/adapteva/parallella-a-supercomputer-for-everyone

It might be interesting for you ( the funding cycle is finished )

There are also interesting comments in the later youtube parts, in particular
the one with the person and the blackboard.

73 Rein W6SZ




-----Original Message-----
>From: Leif Asbrink <le...@sm5bsz.com>
>Sent: Apr 20, 2013 3:40 PM
>To: lin...@googlegroups.com
>Subject: Re: [Linrad] Fw: linrad 3.48 and raspberry pi + fifi-sdr
>
>Hi Gun,
>
>Seems your system is overloaded. Try to set the fft1 window size N = 0
>(unwindowed FFT) If it starts running, try the different fft1 versions.
>The cpu load may differ.
>You might try to increase the fft1 storage time slightly
>and perhaps check whether the fft1 size affects cpu load much.
>It could be important to make the fft1 size small because
>if the CPU has a small cache it helps to keep the fft inside
>the cache memory.
>
>Press T to get the timings for individual threads.
>
>Also run top to see how much overhead you have from X11.
>
>I guess the fifi-sdr is using the sound sub-system.
>Make sure that you do not invoke extra processes from
>pulseaudio or something. It is probably best to avoid
>Portaudio, but one never knows.
>
>It would be much better to run in terminal mode but
>for that you would have to install svgalib. There is no
>reason to have a working module for your graphics,
>with flinrad you would use the front buffer device directly
>but svgalib is required for the mouse.
>
>Anyone has an idea for another way to get mouse support?
>I tried GPM but mouse then has a resolution corresponding to
>the characters of a text screen:-(
>
>73
>
>Leif
>
>
>
>> I would use the raspberry -pi and the fifi-sdr with linrad.
>>
>> Install linrad 3.48 - okay , FiFi-Sdr also okay, can install soundcard and si570 - usb .
>>
>> Programms runs 3 - 4 sec, then rx - over-run error
>> (CPU nearly 100 %) - no reaction.
>> The Screen see gif below.
>>
>> Thanks and 73 Gun / DL2RUG
>>
>>
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[Michael Durkin]

one of the guys on the sdr-widget got one of the 16 core units ..

[Sid Boyce]

That's ages old.
Mine was promised sometime this month though I read of some slight delay
possible but they were working hard on getting boards out to backers as
soon as they can.

I think the delay may have been caused by the change from a Zynq 7000
FPGA to a Zynq 7020.
http://www.adapteva.com/white-papers/the-parallella-board-uncovered/
http://forums.parallella.org/
73 ... Sid.

--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks

[rei...@ix.netcom.com]

Hi Sid,

Thanks for comment.

Obviously, you have been following this development much closer than I have.
Besides that, I don't have the smarts to work with such a board.
But I thought there would be perhaps some interest here in such a project.

From more recent:

http://www.designspark.com/blog/a-parallella-update

[Sid Boyce]

OK Rein,
I forgot to mention designspark as I am on their mailing list.
I am also on the gnuradio list and it was there I read of the GSoC project.

There is sufficient code available to explore when I get my hands on one.
73 ... Sid.

[rei...@ix.netcom.com]

Hello Sid,

Thanks. You are aware of the board and who knows in the future....?
I got to this data via the Raspberry Pi Group and its many info
sources.

[Sid Boyce]

Hi Rein,
RSComponents through DesignSpark have taken a great interest in Pi,
Parallela and microcontroller developments and it's well worth subscribing.
73 ... Sid.

[rei...@ix.netcom.com]

Hello Sid,

Tnx for pointing to DesignSpark with all its features.
Of great interest for Arduino and Raspberry PI which both I have here.
Had no idea what this was all about.

[Sid Boyce]

No problem Rein,
I have the lot here, a Beagleboard C3 and a -XM, 1 Arduino Uno not
powered up.
In use Beaglebone, Pandaboard which I have just upgraded to Ubuntu
13.04, ODROID-X and 1 Arduino Uno.
One Arduino is for a Yaesu G-1000DXC rotator controller and the other
for a magnetic loop tuner - just need to build the additional hardware.
73 ... Sid.