cuda source code

From where can I get CUDA source code ? Can someone point me to source code ?

Thank you

Dear vikash,
If you are asking for CUDA samples, please find at /usr/local/cuda/samples.

Hello SivaRamaKrishna,

I am looking for the source code of libraries which implements memory management APIs and other lib APIs. Can u point me to source code ?

Thank you

Dear vikash,
It is not publicly available.