Marcus D. Leech wrote on 7/6/2011 6:12 AM:
> If I decimate by 3 or more before the FFT (after vectorizing), I runs
> OK, consuming about 40% of the
> total system CPU, and not producing any 'O'.
Have you tried to find the blocks consuming the power? I once used
oprofile, and it worked quite wel
I can borrow my lab mates N210 and see what kind of performance I can get
out of it on my T410 Thinkpad (i7 proc).
On Tue, Jul 5, 2011 at 9:12 PM, Marcus D. Leech wrote:
> > What sort of CPU are you using?
> >
> > --Colby
> AMD Phenom II X6 1055T, with 6GB of 1333MT/s memory. Rough ballpark
>
> What sort of CPU are you using?
>
> --Colby
AMD Phenom II X6 1055T, with 6GB of 1333MT/s memory. Rough ballpark
calculations show
me that even a 4096-bin FFT shouldn't take more than about
0.45GFlop/sec at 25Msps, and the
CPU is easily capable of at least 8GFlop/sec/core. So I'm not sure
w
What sort of CPU are you using?
--Colby
On Tue, Jul 5, 2011 at 8:19 PM, Marcus D. Leech wrote:
> On Jul 5, 2011, at 10:50 PM, Colby Boyer wrote:
>>
>>> Not clear to me how to use them to effect non-uniformly-spaced channels.
>>> Also, individual channels will have their own bandwidths.
>>>
>>
On Jul 5, 2011, at 10:50 PM, Colby Boyer wrote:
Not clear to me how to use them to effect non-uniformly-spaced channels. Also,
individual channels will have their own bandwidths.
See also: "Polyphase Filter Banks For Unequal Channel Bandwidths And Arbitrary
Center Frequencies" by fred harris
On Jul 5, 2011, at 10:50 PM, Colby Boyer wrote:
> Not clear to me how to use them to effect non-uniformly-spaced channels.
> Also, individual channels will have their own bandwidths.
See also: "Polyphase Filter Banks For Unequal Channel Bandwidths And Arbitrary
Center Frequencies" by fred harri
On Tue, Jul 5, 2011 at 7:14 PM, Marcus D. Leech wrote:
> **
>
>
>>
>
> Have you tried the polyphase filter channelizer blocks?
>
> --Colby
>
> Not clear to me how to use them to effect non-uniformly-spaced channels.
> Also, individual channels will have their own bandwidths.
>
>
>
> --
> Marcu
Have you tried the polyphase filter channelizer blocks?
--Colby
Not clear to me how to use them to effect non-uniformly-spaced channels.
Also, individual channels will have their own bandwidths.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbra
On Tue, Jul 5, 2011 at 6:58 PM, Marcus D. Leech wrote:
>
>>
>> Hi Marcus,
>>
>> What are you using the vector sink for, I can't find anything that unloads
>> it? If you look at the source code, this block continuously calls
>> "push_back" on a STL vector container (element size is the GNURadio ve
Hi Marcus,
What are you using the vector sink for, I can't find anything that
unloads it? If you look at the source code, this block continuously
calls "push_back" on a STL vector container (element size is the
GNURadio vector). So if nothing ever empties it, then it should
consume all the
Hi Marcus,
What are you using the vector sink for, I can't find anything that
unloads it? If you look at the source code, this block continuously
calls "push_back" on a STL vector container (element size is the
GNURadio vector). So if nothing ever empties it, then it should
consume all the
On Tue, Jul 5, 2011 at 6:13 PM, Marcus D. Leech wrote:
> Relatively simple flow-graph, not complete yet by any stretch of the
> imagination.
>
> It starts out innocuous enough, but really gets going after a while. The
> RSS grows by about 150M/minute, the Virtual Size at a somewhat
> slower pac
Relatively simple flow-graph, not complete yet by any stretch of the
imagination.
It starts out innocuous enough, but really gets going after a while.
The RSS grows by about 150M/minute, the Virtual Size at a somewhat
slower pace. After a few minutes of running, its RSS has grown
enough th
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