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Thread 'Any progress in making crunching AMD-friendly?'

Message boards : Number crunching : Any progress in making crunching AMD-friendly?
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old_user65568

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Message 18298 - Posted: 16 Dec 2005, 21:02:09 UTC

Or does the bias against AMD processors continue?

Just wondering.

Matthew

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Profilegeophi
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Message 18303 - Posted: 16 Dec 2005, 21:33:39 UTC
Last modified: 16 Dec 2005, 21:34:03 UTC

The latest sulphur version, 4.22 for Windows, has a significant speed increase over 4.19 for most AMDs.

Athlon64 3400+ (2.2 GHz)
before 3.18 s/TS
after 2.65 s/TS

AthlonXP 3200+
before 3.55 s/TS
after 3.10 s/TS
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Kenneth Larsen

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Message 18577 - Posted: 21 Dec 2005, 20:13:06 UTC

Those numbers seem quite low to me, and I wonder why my machine is so slow. I\'m running a 4.21 sulphur model doing about 4.0 s/TS, The processor is an AMD64 3200. However, I\'m running Gentoo64 and know that 32bit apps are slower under pure 64bit. I just can\'t understand how it can be that slow.

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Message 18582 - Posted: 21 Dec 2005, 20:48:19 UTC - in response to Message 18577.  
Last modified: 21 Dec 2005, 20:49:04 UTC

Those numbers seem quite low to me, and I wonder why my machine is so slow. I\'m running a 4.21 sulphur model doing about 4.0 s/TS, The processor is an AMD64 3200. However, I\'m running Gentoo64 and know that 32bit apps are slower under pure 64bit. I just can\'t understand how it can be that slow.

That is kind of slow. My Athlon64 3200+ did about 3.45 s/TS in WinXP, and about 3.5 s/TS in FC3 x86-64 Linux with sulphur 4.21 and before. But this was with low-latency RAM running at 1T command rate. If you have higher latency RAM and it\'s running at 2T command rate, that could make quite a difference.
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Kenneth Larsen

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Message 18629 - Posted: 22 Dec 2005, 20:11:32 UTC

I\'ll soon get some new (and more) RAM, I\'ll see if that makes a difference then. Currently I only have 512MB, and it\'s not the fastest kind.
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Message boards : Number crunching : Any progress in making crunching AMD-friendly?

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