Debug view

The Debug view shows the target debugging information in a tree hierarchy.

The number beside the host thread label is a reference counter, not a thread identification number (TID).

Nsight displays stack frames as child elements. On the host, it displays the reason for the suspension (such as end of stepping range, breakpoint hit, and signal received) on the thread label . Reason will be shown on the kernel label if debugger suspends in the device code. When a program exits, the exit code is displayed.

The icons that appear in the Debug view include:

Icons	Name	Description
	Launch instance	Launch configuration name and launch type
	CUDA Kernel	Kernel name, ID, device the kernel is running on
	Kernel focus thread	Suspended device thread. See Navigating CUDA application state for details.
	Pinned device thread	Pinned device thread
	Stack frame	Stack frame number, function, file name, and file line number
	All CUDA Threads	Contains all running blocks and threads
	Block	Block Idx, device SM where the block is running
	Device thread	Thread Idx, warp and lane where the thread is running
	Host (CPU) process	Shows executable path, PID and CPU cores used
	Host (CPU) thread	Host thread number and state
	Debugger instance	Debugger name and state

In addition to controlling the individual stepping of your programs, you can also control the debug session. You can perform actions such as terminating the session and stopping the program by using the debug launch controls available from Debug view.

Debug view toolbar options

The table below lists the toolbar options displayed in the Debug view.

Icons	Name	Description
	Toggle pinned state	Pins or unpins selected device thread
	Remove All Terminated Launches	Clears all terminated processes in Debug view
	Resume	Select the Resume command to resume execution of the currently suspended debug target.
	Suspend	Select the Suspend command to halt execution of the currently selected thread in a debug target.
	Terminate	Ends the selected debug session and/or process. The impact of this action depends on the type of the item selected in the Debug view.
	Disconnect	Detaches the debugger from the selected process (useful for debugging attached processes).
	Step Into	Select to execute the current line, including any routines, and proceed to the next statement.
	Step Over	Select to execute the current line, following execution inside a routine.
	Step Return	Select to continue execution to the end of the current routine, then follow execution to the routine's caller.
	Drop to Frame	Select the Drop to Frame command to re-enter the selected stack frame in the Debug view.
	Instruction Stepping Mode	Activate to enable instruction stepping mode to examine a program as it steps into disassembled code.
	Use Step Filters	Select the Use Step Filters command to change whether step filters should be used in the Debug view.
	Menu	Use the Debug view menu to: Change the layout of debug view (tree vs. breadcrumb) Change presentation of the All CUDA Threads subtree Alternate showing of full or no paths on source files Control how views are managed Activate or deactivate the child elements shown in the Debug view

Debug view context menu commands

The Debug view context menu commands include:

Icons	Name	Description
	Toggle pinned state	Pins or unpins selected device thread
	Copy Stack	Copies the selected stack of suspended threads as well as the state of the running threads to the clipboard.
	Find...	Opens the debug view element searching dialog.
	Drop To Frame	Select the Drop to Frame command to re-enter the selected stack frame in the Debug view.
	Step Into	Select to execute the current line, including any routines, and proceed to the next statement.
	Step Over	Select to execute the current line, following execution inside a routine.
	Step Return	Select to continue execution to the end of the current routine, then follow execution to the routine's caller.
	Instruction Stepping Mode	Activate to enable instruction stepping mode to examine a program as it steps into disassembled code.
	Use Step Filters	Toggles step filters on/off. When on, all step functions apply step filters.
	Resume Without Signal	Resume program execution after receiving the signal.
	Resume	Select the Resume command to resume execution of the currently suspended debug target.
	Suspend	Select the Suspend command to halt execution of the currently selected thread in a debug target.
	Terminate	Ends the selected debug session and/or process. The impact of this action depends on the type of the item selected in the Debug view.
	Terminate and Relaunch	Select the Terminate and Relaunch command to terminate the selected debug target and then relaunch it.
	Disconnect	Detaches the debugger from the selected process (useful for debugging attached processes)
	Remove All Terminated	Clears all terminated processes in Debug view
	Terminate and Remove	Terminates the selected debug target and removes it from the view.
	Terminate/Disconnect All	Terminates or disconnects all active launches in the view.
	Properties	Opens the Properties for window showing the process properties.

Debug overview
Debug information

Debugging
Navigating CUDA application state

CUDA view
Run and Debug dialog box
Debug Breadcrumb
C/C++ Views