[Discuss-gnuradio] Performance problem with memmove

2012-09-03 Thread Felix Wunsch
Hi all, while I was profiling and optimizing my DRM transmitter flow graph, I noticed that __memmove_sse3_back.S is the dominating part in my program, although I do not explicitly call memmove() once in my own code. I am using a vector based approach which leads to quite large buffers (and

[Discuss-gnuradio] GRCon hotel deadline extended!

2012-09-03 Thread Tom Rondeau
Hey everyone. I just wanted to let everyone here know that we've been able to extend the conference rate at the Sheraton through this Thursday, Sept. 6: http://www.trondeau.com/grc2012-location/ Please sign up before then! If you've already booked rooms at the Sheraton under the non-conference

Re: [Discuss-gnuradio] Queue Source not being processed by DPSK Demod Block

2012-09-03 Thread Travis Collins
By not processing data I mean I look at the size of the source queue, which is attached to the dpsk_demod block and it just grows without data being removed. I just use the queue.count() method to observe this. I can even stop adding data to the message source block and the queue count remains

[Discuss-gnuradio] How to calculate how many pulse in one interval

2012-09-03 Thread lliao003
http://old.nabble.com/file/p34385204/pic.png http://old.nabble.com/file/p34385204/flow.png Hi all I am working on a counter to calculate how many pulse in one interval. The input for the picture is a square waveform whose frequency is 40k HZ, so how can I calculate how many pulse in one

Re: [Discuss-gnuradio] seg fault in volk_32f_s32f_multiply_32f_a_sse gnuradio v 3.6.1

2012-09-03 Thread ikjtel
The reason this doesn't cause a problem for you in 3.3 is because that's pre-Volk. This looks like you're running SSE operations on a system that doesn't support it. Hi Tom I shall put together the full list of stuff you mentioned, but 3 quick things   1) the system apparently does support