On 1/17/13 10:35 AM, Philip Balister wrote:
On 01/17/2013 08:57 AM, Ed Criscuolo wrote:
Has anyone been using Gnu Radio on a Raspberry Pi lately? (just got one for
Xmas :) ) Any special build procedures for 3.6.3?
Please remember the R-pi is an armv6 based processor with a vfp unit
(not a NEON SIMD unit). Do not expect much signal processing performance
from this.
Armv7 + NEON is much better.
Philip
I thought it has an Arm11! From Wikipedia:
"The Raspberry Pi has a Broadcom BCM2835 system on a chip (SoC),[3]
which includes an ARM1176JZF-S 700 MHz processor.... VideoCore IV
GPU,[12] and originally shipped with 256 megabytes of RAM, later
upgraded to 512MB."
Wikipedia also states:
"ARM11 is an ARM architecture 32-bit RISC microprocessor family which
introduced the ARMv6 architectural additions. These include SIMD media
instructions, multiprocessor support and a new cache architecture."
These would seem to imply that the R-Pi has SIMD instructions available.
In addition, the VideoCore IV GPU looks like it's a pretty capable
DSP in it's own, capable of running it's own applications without the
CPU. Sounds like Volk could take advantage of it as well.
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