3 ms·
ReBAR only matters for transfers across the PCIe link, so for most of the tests in the article it's completely irrelevant. And even for the PCIe transfer tests,
by wtallis 4y ago
ReBAR only matters for transfers across the PCIe link, so for most of the tests in the article it's completely irrelevant. And even for the PCIe transfer tests, ReBAR should only affect the portions of the tests that are accessing more GPU memory than the default BAR size used for 32-bit compatibility.
- timw4mail 4y agoConsidering how much the Arc series loves to share system memory, I'm not so sure.
- wtallis 4y agoIntel's having to find and fix every place their drivers assumed that the CPU's RAM and the GPU's RAM were the same pool of memory. As a result, it's completely unsurprising that they're struggling with performance in real applications and games, but it doesn't provide a reason to expect microbenchmarks such as these to run afoul of an irrelevant problem.