3 ms·
You just use the PCI bus. GPUDirect gives you DMA access to the other GPUs on the same bus. If they're in PCI express x16 slots, it's relatively speedy.
by michael_h 10y ago
You just use the PCI bus. GPUDirect gives you DMA access to the other GPUs on the same bus. If they're in PCI express x16 slots, it's relatively speedy.
- creshal 10y ago16 GByte/second sounds fast, but it's less than the bandwidth of dual channel DDR2 RAM. Never mind modern GDDR5X/DDR4/HBM memory.