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<div class="moz-cite-prefix"> <font size="-2" face="Helvetica,
Arial, sans-serif">Hi Warren,<br>
<br>
<br>
Thanks for the response to my questions.<br>
I understand that the question is easier than the answer,<br>
and that having both, high CPU clock and more CPU cores, would
be the best way to go.<br>
<br>
I just got a bit confused when I looked at the CPU benchmark
list.<br>
I see that the real high benchmark CPU's( like a Intel Xeon
E5-2698 v3 @ 2.30GHz )<br>
got lower clock's (but more cores).<br>
<br>
In the early day's, the fastest CPU where the those with
highest clock rates.<br>
<br>
I will see if i can get some extra hobby funds (h.i) and then
properly go for a</font><font size="-2" face="Helvetica,
Arial, sans-serif"> Intel Core i7-5930K, 6x 3.50GHz</font><font
size="-2" face="Helvetica, Arial, sans-serif">.<br>
<br>
<br>
Thanks,<br>
<br>
73' Bert<br>
<br>
<br>
</font><br>
<br>
<br>
Op 1-11-2015 om 11:46 schreef Warren C. Pratt:<br>
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<blockquote cite="mid:5635ED71.3030209@wpratt.com" type="cite">*****
High Performance Software Defined Radio Discussion List ***** <br>
<br>
Hi Bert, <br>
<br>
First of all, even though I code some of the most
performance-critical algorithms, I must say that I don't have a
definitive answer to your question. There are many factors
involved. <br>
<br>
The openHPSDR PowerSDR application is multi-threaded and is
becoming even more-so as we move toward the new protocol. So,
there's no doubt we benefit from more cores. On the other hand,
not all threads are equally loaded; so, there is a benefit from
raw CPU clock rate. Other factors that could be important are
cache size and memory speed. <br>
<br>
Among the two processors you mention, I would probably slightly
favor the one with more cores and larger cache. However, as I
said, it's a difficult call. <br>
<br>
One thing is for sure: as we develop/include new algorithms,
compute power requirements are increasing. As an example, I had
to "dumb down" the new Spectral Noise Blanker because even on my
system, one of the fastest available, it wouldn't run at full
speed. <br>
<br>
Fortunately, our openHPSDR system architecture allows us to keep
upgrading our computers to expand the possibilities for future
developments. <br>
<br>
73, <br>
Warren NR0V <br>
<br>
<br>
<br>
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