Re: [Discuss-gnuradio] How do I interface my X310 with an NVIDIA K80 GPU in GNURadio

2018-05-24 Thread Marcus D. Leech
On 05/02/2018 10:56 AM, John Ferguson wrote: GNU Radio CPU > CUDA CPU > CUDA GPU > CUDA CPU > GNU Radio CPU So depending on what kind of latency you can handle, this may or may not work for you. I'm assuming that the GPU question is not directly related to the recording question. One of the p

Re: [Discuss-gnuradio] Changing delay block value over time

2018-05-24 Thread Yeo Jin Kuang Alvin (IA)
Hi, I need to simulate propagation delay, for example, having a plane fly past and have to collect data for 5 secs which means I need to calculate the slant range over time. In order for me to get the propagation delay 2R/c. As a result, I need to change the delays for 5 secs. Thank you in ad

[Discuss-gnuradio] GNURadio master and UHD RFNOC Version Issue

2018-05-24 Thread John Medrano
Recently we built GNURadio and UHD from source on a Fedora 28. Since we use RFNOC we were compiling GNURadio version v3.7.10.2, and using rfnoc-devel branch from UHD. Building on Fedora 28 we received compiling errors when we were building v3.7.10.2. So we decided to build the master branch instea

Re: [Discuss-gnuradio] Changing delay block value over time

2018-05-24 Thread Jean-Michel FRIEDT
possibly an ugly hack, but I use the Function Probe plugged to a Signal Source to tune the variable delay between two signals. An example is at http://jmfriedt.sequanux.org/xcorrdemo.grc. JM I'd recommend that, yes :) But then again, the delay block you're referring to only allows for full samp

Re: [Discuss-gnuradio] Changing delay block value over time

2018-05-24 Thread CEL
I'd recommend that, yes :) But then again, the delay block you're referring to only allows for full samples in delay; maybe you much rather want an adjustable interpolator? What is the purpose of all this (kind of a recurring theme, me asking *why* people want to do something, so that we can help t

Re: [Discuss-gnuradio] Changing delay block value over time

2018-05-24 Thread Yeo Jin Kuang Alvin (IA)
Hi all, Is there a way to implement control of delays over time? Type out own code? Thank you in advanced! -Original Message- From: Müller, Marcus (CEL) [mailto:muel...@kit.edu] Sent: Thursday, 24 May 2018 5:58 PM To: Yeo Jin Kuang Alvin (IA); discuss-gnuradio@gnu.org Subject: Re: [Disc

Re: [Discuss-gnuradio] Changing delay block value over time

2018-05-24 Thread CEL
No. Best regards, Marcus On Thu, 2018-05-24 at 09:22 +, Yeo Jin Kuang Alvin (IA) wrote: > Hi all, > > Am I able to change the value of the delay block automatically in GRC over > time when the flowgraph is running? > > Thank you in advanced! > _

Re: [Discuss-gnuradio] random number problem

2018-05-24 Thread CEL
Hi! Don't use random.h's `random()` in GNU Radio. It's not thread-safe and mustn't be used in multithreaded applications, and GNU Radio is inherently multithreaded. > So I tried to use srand(time(0)) That is **explicitly** a way to get a different sequence every time, so this is very counter-pr

[Discuss-gnuradio] Changing delay block value over time

2018-05-24 Thread Yeo Jin Kuang Alvin (IA)
Hi all, Am I able to change the value of the delay block automatically in GRC over time when the flowgraph is running? Thank you in advanced! ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnur

[Discuss-gnuradio] random number problem

2018-05-24 Thread 김무연
 Hi all!Could I ask something?I want to generate random numbersSo when I make a block, I included random.h and I used random() functionBut every time it produces the same outputAnd I want to use this blocks twice in the gnuradioSo I tried to use srand(time(0))But it didn't workMy question is this a