CODEWITHSUNDEEP
linuxwindowscudagpgpupci
Sijo
Sijo

Reputation: 619

Copy to CUDA GPU Memory from a PCI Device

Is there is any way to write to CUDA Device memory from a PCI device. This PCI device is logging data a very fast rate. So attaining the maximum performance, i want to copy the data directly to GPU memory for processing with a host transfer.

I read about RDMA in the CUDA 5.0. How i can transfer the data from PCI to GPU memory using RDMA/GPUDirect.

Please help me in providing some samples for this.

OS I am using are Windows 7 64 bit and CentOS 64 bit CUDA SDK is 5.0 and GPU is Tesla K20

Upvotes: 0

Views: 1521

Answers (1)

RoBiK
RoBiK

Reputation: 1730

RDMA for GPUDirect is a feature introduced in Kepler-class GPUs and CUDA 5.0 that enables a direct path for communication between the GPU and a peer device using standard features of PCI Express.
The devices must share the same upstream root complex.
A few straightforward changes must be made to device drivers to enable this functionality.

Please see the NVIDIA Documentation regarding RDMA for GPUDirect for details.

Upvotes: 2

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