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x86 vs AMD64 OCaml compiler performance
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Date: 2005-07-06 (19:19)
From: Christopher Campbell <cyberdanx@g...>
Subject: Re: [Caml-list] x86 vs AMD64 OCaml compiler performance
Jon Harrop wrote:
> On Wednesday 06 July 2005 18:16, you wrote:
>>Jon Harrop wrote:
>>>I just timed recompilation of my latest project to both byte code and
>>>native code on both 900MHz Athlon t-bird and 800MHz Athlon64. To my
>>>suprise, compilation to native code takes roughly the same amount of time
>>>on both computers but compilation to byte code is slightly faster (1m18
>>>vs 1m40) on x86 but vastly faster (21s vs 1m50) on AMD64.
>>Ummm... do you mean "1800MHz" or "1.8GHz" for the Athlon64? :)
> No, I got that bit right - 800MHz (downclocked for the muggy summer). Running 
> at 1.8GHz it compiles in 9s but overheats and switches off after a few 
> minutes, especially when the GPU is working like a Trojan.

You probably have, but I'll ask anyway.  Have you checked the heatsink 
is seated properly and the case has suitable airflow?  I have a Athlon64 
3200 (Winchester) with a 6600GT in a room with a combi boiler in the 
cupboard and it's always bloomin' hot in here but the system never 
crashes and dies.  Mind you, it has a smaller cache and I don't live in 
Cambridge (unfortunately I live in damp dreach Glasgow).