I'm running the sample wifi_tx.grc flowchart from gr-ieee802.11, substituting a null sink for the USRP sink to test it.
When I try to run it, it fails with the following error message: " >set_min_output_buffer on block 7 to 207744 >set_min_output_buffer on block 9 to 2077440 >set_min_output_buffer on block 11 to 2077440 >set_min_output_buffer on block 12 to 207744 >set_min_output_buffer on block 13 to 415488 >set_min_output_buffer on block 14 to 207744 >set_min_output_buffer on block 26 to 262144 >set_min_output_buffer on block 27 to 96000 >set_min_output_buffer on block 31 to 100000 >gr::vmcircbuf_mmap_shm_open: mmap (1): Cannot allocate memory >gr::buffer::allocate_buffer: failed to allocate buffer of size 1038720 KB >gr::vmcircbuf_mmap_shm_open: mmap (1): Cannot allocate memory >gr::buffer::allocate_buffer: failed to allocate buffer of size 1038720 KB >Traceback (most recent call last): > File "/home/vtti/working/wifi_tx.py", line 297, in <module> > main() > File "/home/vtti/working/wifi_tx.py", line 276, in main > tb.start() > File "/usr/local/lib/python3.6/dist-packages/gnuradio/gr/top_block.py", line 111, >in start > top_block_start_unlocked(self._impl, max_noutput_items) > File "/usr/local/lib/python3.6/dist-packages/gnuradio/gr/runtime_swig.py", line >5828, in top_block_start_unlocked > return _runtime_swig.top_block_start_unlocked(r, max_noutput_items) >RuntimeError: std::bad_alloc " Here's a picture of my flowchart: [image: gnuradio-runtimeError-bad_alloc.png] Tested this on a different machine, and it works fine, so the problem isn't with the flowchart itself. I'm working off the maint-3.8 branch, installed from source. Any idea why I'm getting this error, or how I could resolve it? Thanks! -- Eamon Heaney *Fleet Commander* *President, Model UN at Virginia Tech*
