CUDA Built-In Runtime Variables

TotalView allows access to the CUDA built-in runtime variables, which are handled by TotalView like any other variables, except that you cannot change their values.

The supported CUDA built-in runtime variables are as follows:

struct dim3_16 threadIdx;

struct dim3_16 blockIdx;

struct dim3_16 blockDim;

struct dim3_16 gridDim;

int warpSize;

The types of the built-in variables are defined as follows:

struct dim3_16 { unsigned short x, y, z; };

struct dim2_16 { unsigned short x, y; };

You can dive on the name of a runtime variable in the source pane of the process window, or input its name into the View > Lookup Variable… (v) menu command dialog box. Built-in variables can also be used in the TotalView expression system.