dcuda hwfocus <D/S/W/L>

Changes the focus via CUDA hardware coordinates of the form D/S/W/L, S/W/L, W/L, or L.

Command alias: 

 

Alias	Definition	Description
cuda	dcuda	Writes out the focus thread, as in dcuda kernel.

Examples: 

Displaying device information

dcuda info-device

Output:

DEV: 0/1 Device Type: gt200 SM Type: sm_13 SM/WP/LN: 30/32/32 Regs/LN: 128

SM: 0/30 valid warps: 0x0000000000000001

 

dcuda info-sm

Output:

DEV: 0/1 Device Type: gt200 SM Type: sm_13 SM/WP/LN: 30/32/32 Regs/LN: 128

SM: 0/30 valid warps: 0x0000000000000001

WP: 0/32 valid/active/divergent lanes: 0x0000000f/0x0000000f/0x00000000 block: (0,0,0)

 

dcuda info-warp

Output:

DEV: 0/1 Device Type: gt200 SM Type: sm_13 SM/WP/LN: 30/32/32 Regs/LN: 128

SM: 0/30 valid warps: 0x0000000000000001

WP: 0/32 valid/active/divergent lanes: 0x0000000f/0x0000000f/0x00000000 block: (0,0,0)

LN: 0/32 pc=0x000000001ef2efa8 thread: (0,0,0)

LN: 1/32 pc=0x000000001ef2efa8 thread: (1,0,0)

LN: 2/32 pc=0x000000001ef2efa8 thread: (0,1,0)

LN: 3/32 pc=0x000000001ef2efa8 thread: (1,1,0)

 

dcuda info-lane

Output:

DEV: 0/1 Device Type: gt200 SM Type: sm_13 SM/WP/LN: 30/32/32 Regs/LN: 128

SM: 0/30 valid warps: 0x0000000000000001

WP: 0/32 valid/active/divergent lanes: 0x0000000f/0x0000000f/0x00000000 block: (0,0,0)

Displaying the focus

dcuda warp sm

Output:

sm 0 warp 0

 

dcuda lane device

Output:

device 0 lane 3

 

dcuda thread

Output:

thread (1,1,0)

 

dcuda kernel

Output:

device 0, sm 0, warp 0, lane 3, block (0,0,0), thread (1,1,0)

Changing the focus

In these commands, note that TotalView assigns CUDA threads a negative thread ID. In the examples here, the CUDA thread is labeled "1.-1".

 

dcuda thread (1,1,0)

Changes the CUDA focus to the thread represented by logical coordinates 1,1,0.

New CUDA focus (1.-1): device 0, sm 0, warp 0, lane 3,
block (0,0,0), thread (1,1,0)

 

dcuda lane 2

Changes the CUDA focus to lane 2.

New CUDA focus (1.-1): device 0, sm 0, warp 0, lane 2,
block (0,0,0), thread (0,1,0)

 

dcuda lane 1 sm 0

Changes the CUDA focus to lane 1 and to SM 0.

New CUDA focus (1.-1): device 0, sm 0, warp 0, lane 1,
block (0,0,0), thread (1,0,0)

 

dcuda thread 0,0,0

Changes the CUDA focus to thread 0,0,0.

New CUDA focus (1.-1): device 0, sm 0, warp 0, lane 0,
block (0,0,0), thread (0,0,0)

 

dcuda thread 1

Changes the CUDA focus to thread 1,0,0.

New CUDA focus (1.-1): device 0, sm 0, warp 0, lane 1,
block (0,0,0), thread (1,0,0)