The threads did not work on a massive vector

Accelerated Computing CUDA CUDA Programming and Performance
1

I’m using Quadro K2200 for some tests. While I created a 209715200 sized vector and added one on each element, the results was not what i expected. Meanwhile, there were none warning or error in execution. After reduce the vector size, the codes do work. May there be some limit of the operated vector size?

2

Probably you are not checking properly for CUDA errors at runtime.

In the failing case, run your code with cuda-memcheck.

There are no limits on vector size other than what can fit in memory.