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  • stratova

    veterán

    válasz Malibutomi #26121 üzenetére

    AMD-NV Kartell :DDD

    Abu85 Bár messze nem csak ezen múlik, a memória helyzet erősen hajaz a Titan X / G980 Ti-re amiken 12/6 GB GDDR5-t volt és kijött Ti árszinten Fury X 4 GB VRAM-mal.
    Most Raja egy 8 GB-os lapkát mutatott, Titan X-en 12 csücsül.

    Bár ez alapján nem lepődnék meg a pozicionálás megismétléséről:

    Interestingly, to drive this point home, AMD actually turned to games rather than professional applications. Plotting out the memory allocation and usage patterns of The Witcher III and Fallout 4, AMD finds that both games allocate far more memory than they actually use, by nearly a factor of 2x. Part of this is undoubtedly due to the memory management model of the DirectX 11 API used by both games, but a large factor is also simply due to the fact that this is traditionally what games have always done. Memory stalls are expensive and games tend to be monolithic use cases, so why not allocate everything you can, just to be sure you don’t run out?

    The end result here is that AMD is painting a very different picture for how they want to handle memory allocations and caching on Vega and beyond. In the short term it’s professional workloads that stand to gain the most, but in the long run this is something that could impact games as well. And not to be ignored is virtualization; AMD’s foray into GPU virtualization is still into its early days, but this likely will have a big impact on virtualization as well. In fact I imagine it’s a big reason why AMD is giving Vega the ability to support a relatively absurd 512TB of virtual address space, many times the size of local VRAM. Multi-user time-sharing workloads are a prime example of where large address spaces can be useful.

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