creating arrays in nvidia cuda kernel

Question

hi I just wanted to know whether it is possible to do the following inside the nvidia cuda kernel

__global__ void compute(long *c1, long size, ...)
{
  ...
  long d[1000];
  ...
}

or the following

__global__ void compute(long *c1, long size, ...)
{
  ...
  long d[size];
  ...
}

Answer 1

You can do #1, but beware this will be done in EVERY thread!

Your second snippet won't work, because dynamic memory allocation at kernel runtime is not supported.