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发表于 2020-4-7 12:40 · 浙江
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本帖最后由 亚里斯猫德 于 2020-4-7 12:48 编辑
blackjtr 发表于 2020-4-7 08:48 
别的不说，马克塞尼在这点上其实玩了一个文字游戏。他说的是尽量让cpu/gpu保持在最高频率上，但是没有提 ...
别的不说，你肯定没看采访原文，也没看我的翻译
塞尔尼说的很清楚，他说保持在高频率或者接近高频率的前提是不考虑“race to idle”的情形，在“race to idle”情形下，高频率是没有意义的
"So, when I made the statement that the GPU will spend most of its time at or near its top frequency, that is with 'race to idle' taken out of the equation - we were looking at PlayStation 5 games in situations where the whole frame was being used productively. The same is true for the CPU, based on examination of situations where it has high utilisation throughout the frame, we have concluded that the CPU will spend most of its time at its peak frequency."
Put simply, with race to idle out of the equation and both CPU and GPU fully used, the boost clock system should still see both components running near to or at peak frequency most of the time.
不管塞尔尼是不是在吹币，他话就是这么说的。其中带引号的是塞尔尼的原话，去掉引号的可能是对塞尔尼的间接引用，也可能是DF自己根据塞尔尼的对话得到的终结，不论如何，都当塞尔尼自己说的，毕竟塞尔尼在前面亲口说过，PS5上的SmartShift不意味着二选一
"The CPU and GPU each have a power budget, of course the GPU power budget is the larger of the two," adds Cerny. "If the CPU doesn't use its power budget - for example, if it is capped at 3.5GHz - then the unused portion of the budget goes to the GPU. That's what AMD calls SmartShift. There's enough power that both CPU and GPU can potentially run at their limits of 3.5GHz and 2.23GHz, it isn't the case that the developer has to choose to run one of them slower."
塞尔尼的方法他说的很清楚
At this point, the clocks may be faster, but the GPU has no work to do. Any frequency bump is totally pointless. "The net result is that the GPU doesn't do any more work, instead it processes its assigned work more quickly and then is idle for longer, just waiting for v-sync or the like. We use 'race to idle' to describe this pointless increase in a GPU's frequency," explains Cerny. "If you construct a variable frequency system, what you're going to see based on this phenomenon (and there's an equivalent on the CPU side) is that the frequencies are usually just pegged at the maximum! That's not meaningful, though; in order to make a meaningful statement about the GPU frequency, we need to find a location in the game where the GPU is fully utilised for 33.3 milliseconds out of a 33.3 millisecond frame.
我真不觉得你好好看过我的翻译或者塞尔尼的原话。还“空载”，塞尔尼是你这种水平的人质疑的？不是说A9没人能在技术上质疑塞尔尼，而是说从技术角度质疑不是你这样拍脑袋想当然靠脑补来质疑的。直接说句不好听的，你这种质疑方法，确实不需要“实际图形编程经验”。同时，拍你这种言论，也不需要“实际图形编程经验”。没有实际经验照样可以拍到你服服帖帖，让你最后顾左右而言他
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