Cannot find device on Mac book Pro

I have tried to run the deviceQuery example on a Mac Book Pro, Leopard 10.5.4, 8600M GT with CUDA 2.0.

XXX$ ./bin/darwin/release/deviceQuery
There is no device supporting CUDA.

Device 0: “Device Emulation (CPU)”
Major revision number: 9999
Minor revision number: 9999
Total amount of global memory: 4294967295 bytes
Number of multiprocessors: 16
Number of cores: 128
Total amount of constant memory: 65536 bytes
Total amount of shared memory per block: 16384 bytes
Total number of registers available per block: 8192
Warp size: 1
Maximum number of threads per block: 512
Maximum sizes of each dimension of a block: 512 x 512 x 64
Maximum sizes of each dimension of a grid: 65535 x 65535 x 1
Maximum memory pitch: 262144 bytes
Texture alignment: 256 bytes
Clock rate: 1.35 GHz
Concurrent copy and execution: No


Press ENTER to exit…

All SDK examples fail at CUT_INIT_DEVICE(…).
Has someone the same problem.


when this happens for me under linux, I have to reinstall the driver.

Thanks, the driver was really the problem.

For everyone with similar problem. It was discussed in this thread :">