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Chapter 05 : K ERNEL F OCUS
Switching Focus
To switch the current focus, use the cuda command followed by the coordinates to be changed:
(cuda-gdb) cuda device 0 sm 1 warp 2 lane 3
[Switching focus to CUDA kernel 1, grid 2, block (8,0,0), thread
(67,0,0), device 0, sm 1, warp 2, lane 3]
374 int totalThreads = gridDim.x * blockDim.x;
If the specified focus is not fully defined by the command, the debugger will assume that the omitted coordinates are set to the coordinates in the current focus, including the subcoordinates of the block and thread.
(cuda-gdb) cuda thread (15)
[Switching focus to CUDA kernel 1, grid 2, block (8,0,0), thread
(15,0,0), device 0, sm 1, warp 0, lane 15]
374 int totalThreads = gridDim.x * blockDim.x;
The parentheses for the block and thread arguments are optional. (cuda-gdb) cuda block 1 thread 3
[Switching focus to CUDA kernel 1, grid 2, block (1,0,0), thread (3,0,0),
device 0, sm 3, warp 0, lane 3]
374 int totalThreads = gridDim.x * blockDim.
CUDA-GDB
DU-05227-001_V4.1 | 15