[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Discuss-gnuradio] SIMD optimizations on FIR filters
From: |
Sérgio Rui Silva |
Subject: |
[Discuss-gnuradio] SIMD optimizations on FIR filters |
Date: |
Mon, 14 Jul 2003 00:51:18 +0100 (WEST) |
User-agent: |
PT Multimedia Webmail program |
I'm using to kinds of FIR filters in my program: SCC and FFF.
When I start my program I get the message:
>>> gr_fir_SCC: using 3DNow!Ext
but I don't get the message: >>> gr_fir_FFF: using "something".
Does this mean that the FIR FFF filter is not using any of the
available SIMD optimizations? From what I saw in the code I
should be getting such message.
Is it preferable to use 3DNow!Ext or 3DNow! instead of SSE?
(benchmark_dotprod seems to point to that...)
Sérgio Rui Silva
P.S.: I'm running a dual Athlon MP 2400+ processor system and
the functions has_3dnow() and has_sse() return true...
**************************************************************
Faculdade de Engenharia da Universidade do Porto, Portugal
http://www.fe.up.pt
***************************************************************
---------------------------------------------------------------------------------------
Words of wisdom:
"Never underestimate the bandwidth of a station wagon full of
tapes hurtling down the highway"
Andrew S. Tanenbaun
-------------------------------------------------------------------------------------
--
SAPO ADSL.PT, apanhe já o comboio da Banda Larga. Kit SAPO ADSL.PT - Grátis
http://adsl.sapo.pt
O SAPO já está livre de vírus com a Panda Software, fique você também!
Clique em: http://antivirus.sapo.pt
- [Discuss-gnuradio] SIMD optimizations on FIR filters,
Sérgio Rui Silva <=