I've seen considerable performance boosts when using the intel compiler -- especially for numerical applications. Why don't you try this compiler?

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Have you ever read the optimized seti cruncher threads? ;)

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Aloha, Uli

Have you ever read the optimized seti cruncher threads? ;)

Obviously he did not ;)

But as i´ve read the thread name a question came to my mind.
Is it possible to "convert" the c++ parts of the code to C code ?
(maybe a stupid question i´m not a programer)

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For faster clients compiled with C or C++ visit The Optimized Application info center at BOINC Synergy. BOINC Synergy is a great team to join if you are not in one new.

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Have you ever read the optimized seti cruncher threads? ;)

Which threads do you mean ?

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Which threads do you mean ?

Ever cared using the search function:
Thread titles containing "optimized"

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Aloha, Uli

Have you ever read the optimized seti cruncher threads? ;)

Obviously he did not ;)

But as i´ve read the thread name a question came to my mind.
Is it possible to "convert" the c++ parts of the code to C code ?
(maybe a stupid question i´m not a programer)

C++ code runs as fast as c-code if they both implement the same functionality the same way.
C++ can translate C code.
So if you want performance in C++ you may want to consider which features of C++ you're using and whether they are necessary.
Using C you would have to implement these features by hand and they would rather be slower than if they are implemented by the C++ compiler.
C++ code maybe faster as it is heavily using inlining of code,
a technique not available to C programmers.

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I'm still curious why setiathome is distributing a Visual C++ application if they already tried the intel compiler and saw the performance gain available to them.
Or in other words: Why is the boinc manager not downloading an application matching the CPU it is running on? So he could optionally exploit sse3 or sse2 which yield quite a performance boost.

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I'm still curious why setiathome is distributing a Visual C++ application if they already tried the intel compiler and saw the performance gain available to them.
Or in other words: Why is the boinc manager not downloading an application matching the CPU it is running on? So he could optionally exploit sse3 or sse2 which yield quite a performance boost.

Well if I rember correctly, for awhile they wanted to slow everyone down simply because there connection was getting hammered with results. instead of 12 connections a day, just one connection say for a 24hour wu would benifit them greatly. I'm not justifying slowing us down though, I think the units should be larger, but optimized as per cpu (SSE MMX SSE2 or SSE3 3dnow etc...)

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I'm still curious why setiathome is distributing a Visual C++ application if they already tried the intel compiler and saw the performance gain available to them.
Or in other words: Why is the boinc manager not downloading an application matching the CPU it is running on? So he could optionally exploit sse3 or sse2 which yield quite a performance boost.

The guys @ berkeley did not use the intel compiler! Volunteer developers as TMR,Ned slider and may others have build the clients available on the third party download page and optimized them.

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I'm still curious why setiathome is distributing a Visual C++ application if they already tried the intel compiler and saw the performance gain available to them.
Or in other words: Why is the boinc manager not downloading an application matching the CPU it is running on? So he could optionally exploit sse3 or sse2 which yield quite a performance boost.

The clients on the third party site are not offical supported by berkeley, and is to use on your own risk.
From Berkeley are only Mac, Linux, Windows and Solaris supported, so this are the only one you can direct download.

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I believe that one of the problems with the Intel compiler is that it does not treat AMD CPUs fairly with the standard set of optimizations that work well for Intel CPUs. I seem to recall some outrage recently someplace when this was discovered.

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I'm still curious why setiathome is distributing a Visual C++ application if they already tried the intel compiler and saw the performance gain available to them.
Or in other words: Why is the boinc manager not downloading an application matching the CPU it is running on? So he could optionally exploit sse3 or sse2 which yield quite a performance boost.

may be as simple as maintenance time needed. rather work on one version than maintenance a large number of apps.

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A few days ago I happened to recommend Intel C++ compiler for Linux to Eric Korpela, currently the developer of setiathome_enhanced by email for testing and debugging purposes (but not for official clients, because of its preference for Intel processors, and much more because of problems with SSE/SSE2/SSE3 detection.) Actually it's very fast, but I'm not interested in optimization so much now.

BTW Intel "was" a sponsor of SETI@home a while ago (but not now.) If you invoke seti@home client in a commandline with -version option, you'll see (this is from upcoming setiathome_enhanced 4.06 for Linux)

SETI@home client.
Version: 4.06

The project is also sponsored by the Planetary Society,
the University of California, Sun Microsystems, Paramount Pictures,
Fujifilm Computer Products, Informix, Engineering Design Team Inc,
The Santa Cruz Operation (SCO), Intel, Quantum Corporation,
and the SETI Institute.

SETI@home was developed by David Gedye (Founder),
David Anderson (Director), Dan Werthimer (Chief Scientist),
Hiram Clawson, Jeff Cobb, Charlie Fenton,
Eric Heien, Eric Korpela, Matt Lebofsky,
Tetsuji 'Maverick' Rai and Rom Walton

....not a joke :)

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Actually it's very fast, but I'm not interested in optimization so much now.

PS: Personally I like Intel C++ compiler and am still using it to build optimized test versions for beta project for testing and debugging personally. Its optimization capability is amazing.

For this SETI@home, I hope unofficially released clients are very nice enough (don't mind the version number 4.11(Windows) or 4.07(Linux), because math inside is the same as that of 4.18 except that optimized clients don't have graphics.)

As others wrote, I guess Berkeley won't use Intel C++ compiler for official clients. I'm not sure.

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