Re: [VOLK] a += b*c ?
Just to be sure you mean, for N-long b and c,
a = \sum_{i=0}^{N-1} b[i]c[i],
right?
That's the dot product, and that exists for a couple in/output types;
the kernels you're looking for are all called dot_prod.
Cheers,
Marcus
On 8/15/22 04:41, Randall Wayth wrote:
Hi Folks,
Hopefully I am just missing this, but is there a kernel that does
vectorised a += b*c ?
Something like the IPP "AddProduct" function?
Cheers,
Randall.
Re: Ubuntu 20.04 cannot find the Hackrf board?
Hi George, On 8/3/22 19:23, George Edwards wrote: Hi Marcus, thanks for the response, very much appreciated! I have a Windows PC and I believe that in order to build OOT blocks, one needs a Linux environment. No, that is not correct. I installed VirtualBox so that I can install Ubuntu 20.04 to get a Linux environment to install Gnuradio 3.9 in. George Why would you then build from source? Just install the packages. Best regards, Marcus On Wed, Aug 3, 2022, 8:26 AM Marcus Müller wrote: Hi George, you'll have to do a bit more investigation on your end, I'm afraid. We don't know how you set up your VM, or how you're passing through the USB driver. Generally, USB passthrough comes at a high overhead, and sometimes that's prohibitively slow, as well. Also, why do VirtualBox (and that's not a Microsoft product, so I'm really confused by what you're referring to), if you can have WSL2? Best regards, Marcus On 03.08.22 14:15, George Edwards wrote: > Hello GNURadio Community, > > I built a grc flowgraph in Gnuradio 3.9.5 on Ubuntu 20.04 inside Microsoft VirtualBox. I > have a HackRF One radio hardware. I installed the hackrf drivers in Ubuntu with command: > sudo apt-get install -y hackrf > and confirmed the installation. I connected the HackRF One board to my computer and in the > Terminal prompt entered the command hackrf_info and received the response that it does not > see the Hackrf board. > > And true to form when I ran the flowgraph, I get the following error message: > RuntimeError: no hackrf device matches > > Why is Ubuntu 20.04 running inside MS VirtualBox not seeing the HackRf board with the > HackRf drivers installed. And, how do I resolve this issue? > > Will appreciate any help to resolve this issue. > > George >
Re: [VOLK] a += b*c ?
On Mon, Aug 15, 2022 at 12:03:25PM +0200, Marcus Müller wrote:
> Just to be sure you mean, for N-long b and c,
>
> a = \sum_{i=0}^{N-1} b[i]c[i],
I suspect the OP meant
A [i] += B [i] * C [i], for i = 0...N-1
--
FA
Re: [VOLK] a += b*c ?
Hi,
the kernels are type specific. However, if you want a dot product:
a = \sum_{i=0}^{N-1} b[i]c[i],
https://github.com/gnuradio/volk/blob/main/kernels/volk/volk_32fc_x2_dot_prod_32fc.h
A [i] += B [i] * C [i], for i = 0...N-1
This would implement the above formula:
1.
https://github.com/gnuradio/volk/blob/main/kernels/volk/volk_32fc_x2_multiply_32fc.h
2.
https://github.com/gnuradio/volk/blob/main/kernels/volk/volk_32fc_x2_add_32fc.h
It would be interesting to see how much faster an integrated kernel
would be.
The ipp `AddProduct function:
https://www.intel.com/content/www/us/en/develop/documentation/ipp-dev-reference/top/volume-1-signal-and-data-processing/essential-functions/arithmetic-functions/addproduct.html
I assume ipp aims for:
https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#ig_expand=3202,3202,3202,3206,3206,3206&text=_mm256_fmadd_ps
Which version are you looking for?
Cheers
Johannes
smime.p7s
Description: S/MIME Cryptographic Signature
Re: [VOLK] a += b*c ?
Thanks for the suggestions and apologies for not being 100% clear at the start. I'm not looking for a dot product. I'm looking for a[i] += b[i]*c[i] specifically for floating point So it would be the equivalent of IPP's ippsAddProduct_32f. The application is to apply a window to a set of samples before accumulating, to implement a weighted overlap add PFB. In my case the samples are real-valued, but I could also see a case for a and b being complex, or the case for b being 8 or 16-bit ints with a and c being floating point. Cheers, Randall
Re: Ubuntu 20.04 cannot find the Hackrf board?
Incidentally, don't use sudo to run the hackrf on Linux. You should be able to run the hackrf on Linux under your login userid - you just need sudo to install the software on the system. I suggest you subscribe to the hackrf list https://pairlist9.pair.net/mailman/listinfo/hackrf-dev they should be able to help you. -- Cinaed On 8/15/22 03:04, Marcus Müller wrote: Hi George, On 8/3/22 19:23, George Edwards wrote: Hi Marcus, thanks for the response, very much appreciated! I have a Windows PC and I believe that in order to build OOT blocks, one needs a Linux environment. No, that is not correct. I installed VirtualBox so that I can install Ubuntu 20.04 to get a Linux environment to install Gnuradio 3.9 in. George Why would you then build from source? Just install the packages. Best regards, Marcus On Wed, Aug 3, 2022, 8:26 AM Marcus Müller wrote: Hi George, you'll have to do a bit more investigation on your end, I'm afraid. We don't know how you set up your VM, or how you're passing through the USB driver. Generally, USB passthrough comes at a high overhead, and sometimes that's prohibitively slow, as well. Also, why do VirtualBox (and that's not a Microsoft product, so I'm really confused by what you're referring to), if you can have WSL2? Best regards, Marcus On 03.08.22 14:15, George Edwards wrote: > Hello GNURadio Community, > > I built a grc flowgraph in Gnuradio 3.9.5 on Ubuntu 20.04 inside Microsoft VirtualBox. I > have a HackRF One radio hardware. I installed the hackrf drivers in Ubuntu with command: > sudo apt-get install -y hackrf > and confirmed the installation. I connected the HackRF One board to my computer and in the > Terminal prompt entered the command hackrf_info and received the response that it does not > see the Hackrf board. > > And true to form when I ran the flowgraph, I get the following error message: > RuntimeError: no hackrf device matches > > Why is Ubuntu 20.04 running inside MS VirtualBox not seeing the HackRf board with the > HackRf drivers installed. And, how do I resolve this issue? > > Will appreciate any help to resolve this issue. > > George >
Re: Ubuntu 20.04 cannot find the Hackrf board?
Thanks Cinaed, I am going off on vacation, but will definitely contact the hackrf_dev group when I return. George On Mon, Aug 15, 2022 at 7:58 PM Cinaed Simson wrote: > Incidentally, don't use sudo to run the hackrf on Linux. > > You should be able to run the hackrf on Linux under your login userid - > you just need sudo to install the software on the system. > > I suggest you subscribe to the hackrf list > > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev > > they should be able to help you. > > -- Cinaed > > > On 8/15/22 03:04, Marcus Müller wrote: > > Hi George, > > > > On 8/3/22 19:23, George Edwards wrote: > >> Hi Marcus, thanks for the response, very much appreciated! > >> I have a Windows PC and I believe that in order to build OOT blocks, > >> one needs a Linux environment. > > No, that is not correct. > >> I installed VirtualBox so that I can install Ubuntu 20.04 to get a > >> Linux environment to install Gnuradio 3.9 in. George > > > > Why would you then build from source? Just install the packages. > > > > Best regards, > > > > Marcus > > > >> > >> On Wed, Aug 3, 2022, 8:26 AM Marcus Müller > >> wrote: > >> > >> Hi George, > >> > >> you'll have to do a bit more investigation on your end, I'm > >> afraid. We don't know how you > >> set up your VM, or how you're passing through the USB driver. > >> Generally, USB passthrough > >> comes at a high overhead, and sometimes that's prohibitively slow, > >> as well. Also, why do > >> VirtualBox (and that's not a Microsoft product, so I'm really > >> confused by what you're > >> referring to), if you can have WSL2? > >> > >> Best regards, > >> Marcus > >> > >> On 03.08.22 14:15, George Edwards wrote: > >> > Hello GNURadio Community, > >> > > >> > I built a grc flowgraph in Gnuradio 3.9.5 on Ubuntu 20.04 inside > >> Microsoft VirtualBox. I > >> > have a HackRF One radio hardware. I installed the hackrf drivers > >> in Ubuntu with command: > >> > sudo apt-get install -y hackrf > >> > and confirmed the installation. I connected the HackRF One board > >> to my computer and in the > >> > Terminal prompt entered the command hackrf_info and received > >> the response that it does not > >> > see the Hackrf board. > >> > > >> > And true to form when I ran the flowgraph, I get the following > >> error message: > >> > RuntimeError: no hackrf device matches > >> > > >> > Why is Ubuntu 20.04 running inside MS VirtualBox not seeing the > >> HackRf board with the > >> > HackRf drivers installed. And, how do I resolve this issue? > >> > > >> > Will appreciate any help to resolve this issue. > >> > > >> > George > >> > > >> > > > > >
Re: Ubuntu 20.04 cannot find the Hackrf board?
Hi Marcus, There are many times I am building custom dsp algorithms that the packages do not support, so I need to write the C++ or Python code for my signal processing algorithms. The Linux distribution after I install gnuradio understands the OOT gr_modtool, how do I replicate this on the Windows PC? Thank you! George George On Mon, Aug 15, 2022 at 5:08 AM Marcus Müller wrote: > Hi George, > > On 8/3/22 19:23, George Edwards wrote: > > Hi Marcus, thanks for the response, very much appreciated! > > I have a Windows PC and I believe that in order to build OOT blocks, > > one needs a Linux environment. > No, that is not correct. > > I installed VirtualBox so that I can install Ubuntu 20.04 to get a > > Linux environment to install Gnuradio 3.9 in. George > > Why would you then build from source? Just install the packages. > > Best regards, > > Marcus > > > > > On Wed, Aug 3, 2022, 8:26 AM Marcus Müller > wrote: > > > > Hi George, > > > > you'll have to do a bit more investigation on your end, I'm > > afraid. We don't know how you > > set up your VM, or how you're passing through the USB driver. > > Generally, USB passthrough > > comes at a high overhead, and sometimes that's prohibitively slow, > > as well. Also, why do > > VirtualBox (and that's not a Microsoft product, so I'm really > > confused by what you're > > referring to), if you can have WSL2? > > > > Best regards, > > Marcus > > > > On 03.08.22 14:15, George Edwards wrote: > > > Hello GNURadio Community, > > > > > > I built a grc flowgraph in Gnuradio 3.9.5 on Ubuntu 20.04 inside > > Microsoft VirtualBox. I > > > have a HackRF One radio hardware. I installed the hackrf drivers > > in Ubuntu with command: > > > sudo apt-get install -y hackrf > > > and confirmed the installation. I connected the HackRF One board > > to my computer and in the > > > Terminal prompt entered the command hackrf_info and received > > the response that it does not > > > see the Hackrf board. > > > > > > And true to form when I ran the flowgraph, I get the following > > error message: > > > RuntimeError: no hackrf device matches > > > > > > Why is Ubuntu 20.04 running inside MS VirtualBox not seeing the > > HackRf board with the > > > HackRf drivers installed. And, how do I resolve this issue? > > > > > > Will appreciate any help to resolve this issue. > > > > > > George > > > > > > >
