= gr-fosphor

GNU Radio block for RTSA-like spectrum visualization using GPU

http://git.osmocom.org/gr-fosphor/

Building = GLFW3

Install dependencies

{{{
sudo apt-get install cmake xorg-dev libglu1-mesa-dev
}}}

Build GLFW

{{{
git clone https://github.com/glfw/glfw
cd glfw
mkdir build
cd build
cmake ../ -DBUILD_SHARED_LIBS=true
make
sudo make install
sudo ldconfig
}}}

=== gr-fosphor

Install dependencies

==== For NVidia

• install [http://www.nvidia.com/object/unix.html NVidia drivers]

{{{
sudo apt-get install nvidia-opencl-dev opencl-headers
}}}

==== For AMD

• install [http://support.amd.com/en-us/download AMD drivers] (13.4 and 13.11 beta6 drivers are known to work on linux)
• install [http://developer.amd.com/tools-and-sdks/heterogeneous-computing/amd-accelerated-parallel-processing-app-sdk/ AMD APP SDK]

Build gr-fosphor

{{{
git clone git://git.osmocom.org/gr-fosphor
cd gr-fosphor
mkdir build
cd build
make
sudo make install
sudo ldconfig
}}}

Build benchmark tool

{{{
cd gr-fosphor/lib/fosphor
make
}}}

Fosphor is known to build successfully on Linux, OSX and Windows.

Screenshots = Short video examples

http://www.youtube.com/watch?v=mjD-l3GAghU

{{{
#!html
<iframe width="960" height="720" src="http://www.youtube.com/embed/mjD-l3GAghU" frameborder="0" allowfullscreen></iframe>
}}}

=== osmocom_fft in fosphor mode
[[Image(GrOsmoSDR:fosphor.png)]]

[[Image(GrOsmoSDR:fosphor2.png)]]

== Bandwidth figures

There's a benchmark program available which allows to estimate the maximal bandwidth that can be processed with a specific GPU.

To build it:

{{{
cd gr-fosphor/lib/fosphor
make
}}}

Then execute it by providing a prerecorded complex float file (a couple of 100MB should be fine) in gnuradio format.

{{{
./main some.cfile
}}}

Try to leave the window to its default size if possible and watch out for the Msps numbers printed out to the console.

Submit your numbers & help us to create a GPU survey. We are especially interested in the top end and mobile graphics figures.

	'''CPU'''		'''GPU'''		'''Msps'''
	?		AMD R920		WANTED
	?		NVidia Titan		WANTED
	i7-4770K 3.50GHz		!GeForce GTX 760		~228
	?		AMD Radeon HD 7950 (Tahiti)		~220
	i5-3570K 3.4GHz		AMD Radeon HD 7870 (Tahiti)		~210
	i5-3570K 3.4GHz		AMD Radeon HD 7870 (Pitcairn)		~112
	i5-2500 3.3GHz		NVidia GTX 550 Ti		~110
	i5-2500k 3.8GHz		AMD Radeon HD 6850		~100
	?		NVidia GTX 550 Ti		~97
	C2D 2.66GHz		!GeForce GT 640 (GK107)		~67
	i5-2500K 4.2GHz		AMD Radeon HD 6570		~58
	C2D 3.00GHz		!GeForce 9800 GT		~47
	C2D 2.4GHz		NVidia 9600M GT		~31
	?		NVidia GT330M		~22
	?		NVidia 8600GT		~15
	C2D 2.2GHz		NVidia NVS 140M		~14
	AMD E350 Fusion APU		AMD Radeon 6310		~12
	Atom 330		NVidia ION		~10