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Re: [Discuss-gnuradio] GNURadio and CUDA reprised
From: |
Moeller |
Subject: |
Re: [Discuss-gnuradio] GNURadio and CUDA reprised |
Date: |
Wed, 12 Jan 2011 20:56:34 +0100 |
User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7 |
On 12.01.2011 14:25, Michael Dickens wrote:
> the CPU). I think that if a GPU can be used, it will be most effective in
> things like filterbanks, or when searching for packets (via their unique sync
> sequence, so matched filtering), or very large FIR filters -- places where a
> LOT of computations and data must be processed and can be parallelized
> easily. In my initial testing, doing something "simple"
Is there an efficient parallel FIR implementation for CUDA? You need only few
operations on
a large set of data. So, isn't this too much for the stream-processor
local-memory?
If GPU global memory has to be used, this would lead to a slower concurrent
access.
And then there is still the transfer time from/to the computer RAM.
It would be great to have a fast filter, but is it really faster than an
optimized SSE CPU FIR?
I had the feeling, that the ratio of computing operations vs. number of samples
has to be
high for a significant GPU vs. CPU speedup.
I'm curious about how much speedup you can achieve for FIR filters
(let's say large/sharp filters of 1024 taps).
- [Discuss-gnuradio] GNURadio and CUDA reprised, Andrew Hofmaier, 2011/01/11
- Re: [Discuss-gnuradio] GNURadio and CUDA reprised, Moeller, 2011/01/12
- Re: [Discuss-gnuradio] GNURadio and CUDA reprised, Sylvain Munaut, 2011/01/12
- Re: [Discuss-gnuradio] GNURadio and CUDA reprised, Michael Dickens, 2011/01/12
- Re: [Discuss-gnuradio] GNURadio and CUDA reprised, Marc Epard, 2011/01/12
- Re: [Discuss-gnuradio] GNURadio and CUDA reprised,
Moeller <=
- Re: [Discuss-gnuradio] GNURadio and CUDA reprised, Michael Dickens, 2011/01/12
- Re: [Discuss-gnuradio] GNURadio and CUDA reprised, Steven Clark, 2011/01/12
- Re: [Discuss-gnuradio] GNURadio and CUDA reprised, Marcus D. Leech, 2011/01/12
- Re: [Discuss-gnuradio] GNURadio and CUDA reprised, Tom Rondeau, 2011/01/12
- Re: [Discuss-gnuradio] GNURadio and CUDA reprised, Moeller, 2011/01/13
Re: [Discuss-gnuradio] GNURadio and CUDA reprised, Steven Clark, 2011/01/12