It supports double precision extension if I read it correctly.
Follow-up: I have installed cudatoolkit_3.0-beta1_linux_64_ubuntu9.04.run, cudadriver_3.0-beta1_linux_64_195.17-beta.run, and gpucomputingsdk_3.0-beta1_linux.run. But when I ran the newly compiled OpenCL examples, e.g., oclSimpleMultiGPU, it reported “No OpenCL platform found!”
PS Restart solved the problem.