Re: [Discuss-gnuradio] gr_vmcircbuf_sysv_shm: shmget (1): Invalid argument

[Tom Rondeau]

On Thu, Feb 10, 2011 at 2:38 PM, Josh Blum <address@hidden> wrote:
> ./shmget_demo_issue.py -v 1024 -n 2048
> gr_vmcircbuf_sysv_shm: shmget (1): Invalid argument
> gr_buffer::allocate_buffer: failed to allocate buffer of size 16392 KB
> terminate called after throwing an instance of 'std::bad_alloc'
>  what():  std::bad_alloc
> Aborted
>
>
> So, I have the latest gnuradio next and ubuntu 10.10. This issue crops
> up whenever I try to run the wxgui fftsink with my usrp2 at full rate,
> and on several different computers.
>
> I have recreated the problem with a simple python app. No message
> queues, no usrp hardware, no graphics, just core gnuradio blocks.
> Application attached.
>
> null source -> keep one in n -> null sink
>
> Basically, increasing the N (decimation) to a high enough number causes
> this issue consistently. Why should more decimation cause this? Did
> something in the tags implementation change this behavior? Any ideas?
>
> Thanks,
> -Josh


ACK. Thanks for the report and test case. I have no idea what's
causing it right now, and I really can't see how the tags would have
interfered.

What happens if you go back to the master or even the 3.3.0 release package?

Tom