Re: [Discuss-gnuradio] usrp_fft.py -W and -S not working in OSX?

[Michael Dickens]

On Sep 4, 2007, at 8:38 AM, Max Moser wrote:
> Hi there, i am trying to play around further with the tools in  
> gnuradio and was surprised that when i use usrp_fft.py -f 27.195M  
> everything worked as expected, but as soon as i added the -W or -S  
> to the command nothing works anymore.

I just updated to the latest SVN trunk, complied and installed  
everything.  'usrp_fft.py' as now found in /usr/local/bin works OK  
for me on OSX 10.4.10 and the latest MacPorts and Apple updates, with  
no "-W" or -S".  Both the "-W" and "-S" options work, but do hang  
regularly.  In my testing, the hanging is directly related to the CPU  
utilization.  On my Intel-iMac with Core 2 Duo, once the app thread  
reaches > 100% CPU utilization, the thread hangs (NB: the '100%'  
number is approximate; I've seen 'top' report back up to 103% without  
hanging immediately, but never > 104% without hanging).  As I only  
have access to dual-processor Macs (both PPC and Intel), I can't say  
what happens on single-processor Macs.

> Does someone notice the same prob in osx? Is there a solution?

I haven't been playing around with the default GNU Radio examples  
recently, so I hadn't noticed this behavior.  I know of no solution  
at this time, but I will investigate it as time allows. - MLD