CUDA 3.1 GPUDirect Technology

Can some1 explain what this GPUDirect technology? Is it same as the one from Mellanox (shared pinned mem?)?

Thanks for any info,

We’re working on a white-paper about this. Yes, it’s basically pinned memory shared between CUDA and a device driver.

Oh… It mimimizes the trip back to a CPU register…! Thanks!

Good alternative! But it would be better to find a way to directly DMA via PCIe to the GPU (without RAM coming into picture)