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Re: [Discuss-gnuradio] Writing SIMD code with sse


From: Dominik Auras
Subject: Re: [Discuss-gnuradio] Writing SIMD code with sse
Date: Thu, 13 Dec 2007 21:03:35 +0100
User-agent: Thunderbird 2.0.0.9 (X11/20071115)

Hi!

I am currently struggling with the memory/cache performance of the most used inner loops in my code. For my code, I am pretty sure that most clock cycles it spends are related to cache miss. I used VTune and Cachegrind to analyze the code. But all I got was the information THAT I frequently miss the cache. They don't give a reason.

So, maybe you can point me to a good website, or give me a hint? Is there a program that can tell me why this happens? E.g. for the Cell processor, there is a static analysis tool that tells you everything about your code. When did it stall, why did it stall, how many stall cycles etc.

Thanks
Dominik




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