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发表于 2009-10-7 12:14:27
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Default graphics RAM usage:
默认显存使用:
As a rule of thumb Collatz adapts to the amount of installed memory on the graphics card and doesn't use more than a third of it per WU.
作为一个法则,Collatz根据显存的大小,一个WU使用总量不超过1/3。
It has a maximum usage of 528MB per WU (only on cards with more than 1.5GB).
最多的情况下,每个WU会使用528MB显存(总显存超过1.5GB时)。
The used memory is always (16 + a power of 2) MB, i.e. 17MB, 18MB, 20MB, 24MB, 32MB, 48MB, 80MB, 144MB, 272MB or 528MB.
显存的用量始终是(16+2^n)MB(n为正整数),例如17MB, 18MB, 20MB, 24MB, 32MB, 48MB, 80MB, 144MB, 272MB, 528MB.
That means it will use 32MB per WU on a 128MB card, 80MB per WU on a 256MB card, 144MB per WU on a 512MB card, and 272MB per WU on a card with 1GB or more.
这就意味着在128MB显存的显卡上,一个WU占用32MB显存,256MB显卡上占用80MB,512MB显卡上占用144MB,1GB的显卡使用272MB,等等。
But this doesn't mean a card with more memory will be faster just because it is allowed to use more RAM.
但并不是说,大显存的显卡会因为显存多而计算更快。
Only real fast cards (think next generation cards) need the higher amount of parallel tasks offered by using more RAM.
只有真正快的显卡(比如下一代的那些显卡)才需要为并行计算任务提供更多显存。
For a HD4870 it doesn't make any noticeable difference if you run the 512MB or the 1GB model.
对于HD4870显卡,512MB显存和1GB显存不会有什么区别。
I you use the r option the behaviour will be similar, just with another percentage.
使用r参数,情况类似,只不过指定了不同的使用比例。 |
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