Re: The effect of cache on performance

If a cache miss happens in a program and no profiler is there to see it,
does it really happen?

On Mon, Jul 5, 2010 at 2:49 PM, Jon Watte <[email protected]> wrote:

>  Do you really think there's such a thing as "right," unless you're
>> talking directly observable physical phenomena?
>>
>
> Aaand that was supposed to be reply to Richard only. Please let's not have
> a metaphysical discussion on this list, OK? :-)
>
> Sincerely,
>
> jw
>
> --
> Americans might object: there is no way we would sacrifice our living
> standards for the benefit of people in the rest of the world. Nevertheless,
> whether we get there willingly or not, we shall soon have lower consumption
> rates, because our present rates are unsustainable.
>
>
>
> On Mon, Jul 5, 2010 at 11:48 AM, Jon Watte <[email protected]> wrote:
>
>>   Just because the world is full of people that think just like you,
>>> doesn't mean the other ones can't be right.
>>>
>>
>> Do you really think there's such a thing as "right," unless you're talking
>> directly observable physical phenomena?
>>
>> Sincerely,
>>
>> jw
>>
>>
>> --
>> Americans might object: there is no way we would sacrifice our living
>> standards for the benefit of people in the rest of the world. Nevertheless,
>> whether we get there willingly or not, we shall soon have lower consumption
>> rates, because our present rates are unsustainable.
>>
>>
>>
>>   On Thu, Jul 1, 2010 at 1:12 AM, Richard Fabian <[email protected]>wrote:
>>
>>> Any development approach where you don't consider the effect of the cache
>>> is going to have inferior performance to one that either implicitly, or
>>> explicitly, takes advantage of the cache.
>>>
>>> I do feel like we've been taught a lot of really good coding techniques
>>> that have ignored this issue. It doesn't mean that the code oriented
>>> techniques aren't good, for fast memory hardware our coding style and
>>> experience is invaluable.
>>>
>>>
>>> On 1 July 2010 06:12, Richard <[email protected]> wrote:
>>>
>>>> I stumbled across this today and found it an interesting read.
>>>> <http://queue.acm.org/detail.cfm?id=1814327>
>>>>
>>>> It relates to our "virtual function calls are bad!"[*] discussion
>>>> earlier.
>>>>
>>>> [*] they're not really bad, its cache misses that are bad.
>>>>  --
>>>> "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for
>>>> download
>>>>  <
>>>> http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/>
>>>>
>>>>      Legalize Adulthood! <http://legalizeadulthood.wordpress.com>
>>>> _______________________________________________
>>>> Sweng-Gamedev mailing list
>>>> [email protected]
>>>>
>>>> http://lists.midnightryder.com/listinfo.cgi/sweng-gamedev-midnightryder.com
>>>>
>>>
>>>
>>>
>>> --
>>> fabs();
>>> Just because the world is full of people that think just like you,
>>> doesn't mean the other ones can't be right.
>>>
>>> _______________________________________________
>>> Sweng-Gamedev mailing list
>>> [email protected]
>>>
>>> http://lists.midnightryder.com/listinfo.cgi/sweng-gamedev-midnightryder.com
>>>
>>>
>>
>
> _______________________________________________
> Sweng-Gamedev mailing list
> [email protected]
> http://lists.midnightryder.com/listinfo.cgi/sweng-gamedev-midnightryder.com
>
>

_______________________________________________
Sweng-Gamedev mailing list
[email protected]
http://lists.midnightryder.com/listinfo.cgi/sweng-gamedev-midnightryder.com