CUDA 6.0 cudaMallocManaged error

Question

I downloaded the CUDA 6.0 RC, and wrote a simple program to test the unified memory. But I got a cudaErrorNotSupported error when I run to cudaMallocManaged function. My GPU is GeForce GT 620, is there any problem with the GPU?

Answer 1

Unified Memory in CUDA 6 requires a cc 3.0 or higher device -- this is noted in the documentation for Unified Memory usage in the CUDA 6 programming guide.

Your GeForce GT 620 GPU is a cc 2.1 device.

Unified Memory features (including cudaMallocManaged) are not supported on cc2.1 devices.