cudaArray simple example-- How to allocate 1D array?

Question

How to allocate cudaArrays? I'm particularly interested in allocating 1D array. After allocation how to access simple elements of it? I read CUDA programming guide but I'm not getting it fully. Can anybody please explain with sample code. Is using cuda1Darray recommended?

sgarizvi · Accepted Answer · 2012-09-22 16:37:12Z

2

cudaArrays are special structures, optimized for texture fetching. You can allocate 1D cudaArray as follows:

      cudaArray* arr;

      //Create Channel Descriptor. float is just for example. Change it to required data type.
      cudaChannelFormatDesc channel = cudaCreateChannelDesc<float>();

      //Allocate Memory
      cudaMallocArray(&arr,&channel,Number_Of_Elements, 1,cudaArrayDefault);

The width and height is the number of elements in the x and y directions.

In the kernel, the elements of this array can be accessed by using tex1D or tex2D functions. cudaArrays can only be read inside device code using these functions.

answered Sep 22, 2012 at 16:37

sgarizvi

16.9k9 gold badges67 silver badges105 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

cudaArray simple example-- How to allocate 1D array?

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related