Re: [Bug-gnubg] Multithreaded rollouts

[Jonathan Kinsey]

Ian Shaw wrote:
> 
>>>> I was amazed that the results of a couple of tests were 
>> exactly the 
>>>> same
>>>> (single/multithreaded) and got a bit under 90% speed 
>> improvement on a 
>>>> dual core machine.
>>>>
>>> Way to go, Jon!
>>>
>>> Mmmm, Dual Core... Must have dual core (drool).
>> I think you need a quad core really...  I wouldn't rush out 
>> and buy a new computer until it's been tested and shown to work...
>>
> 
> Seriously, I am planning to upgrade my processor and memory quite soon. I'd 
> like to get the most bang for my buck, so any advice would be appreciated. A 
> quad core would exceed my budget, though.
> 
> An Intel Core 2 Duo 1.86 GHz is about £115. A quad core costs £622. (Mind 
> you, that is less than twice the price of the equivalent dual core  2.66 GHz 
> dual core.)
> 
> I've just noticed that a PentiumD with 2x3.4 GHz processors on one core is 
> only £100. Seems like more GHz for less money, but I know you only get what 
> you pay for. Would multi-threading work on this CPU? I haven't really kept 
> track of hardware developments over the last few years, so I'm way out of 
> touch.
> 
> Does memory size affect performance much? I've always just gone with the 
> standard cache size. Would altering it improve things, and what size change 
> would make a difference?

I'm not an expert either.  The "Intel Core 2 Duo 1.86 GHz" performs
better in benchmarks than the "PentiumD with 2x3.4 GHz".  The
multi-threading would work on either, cache size may well be a factor as
well, I don't know how much of a factor though...

Jon

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