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)