SYNOPSIS

cuda-gdb [gdb-options] [--cuda-use-lockfile VALUE] [prog [core|procID]]

cuda-gdb [gdb-options] [--cuda-use-lockfile VALUE] --args prog [arguments]

DESCRIPTION

cuda-gdb is the NVIDIA CUDA debugger for Unix platforms. It is gdb with extra commands specific to CUDA debugging.

All the existing gdb commands are supported. On top of those commands, the following CUDA-specific commands are also supported.

Info Commands

Commands to query information about CUDA activities:

info cuda devices

information about all the devices

info cuda sms

information about all the SMs in the current device

info cuda warps

information about all the warps in the current SM

info cuda lanes

information about all the lanes in the current warp

info cuda kernels

information about all the active kernels

info cuda contexts

information about all the contexts

info cuda blocks

information about all the active blocks in the current kernel

info cuda threads

information about all the active threads in the current kernel

info cuda launch trace

information about the parent kernels of the kernel in focus

info cuda launch children

information about the kernels launched by the kernels in focus

Focus Commands

Commands to query or switch the focus of the debugger:

cuda block

Print or select the current CUDA block

cuda device

Print or select the current CUDA device

cuda grid

Print or select the current CUDA grid

cuda kernel

Print or select the current CUDA kernel

cuda lane

Print or select the current CUDA lane

cuda sm

Print or select the current CUDA SM

cuda thread

Print or select the current CUDA thread

cuda warp

Print or select the current CUDA warp

Configuration Commands

Commands to configure the CUDA-specific commands:

set cuda api_failures

Set the api_failures to ignore/stop/hide on CUDA driver API call errors

set cuda break_on_launch

Automatically set a breakpoint at the entrance of kernels

set cuda coalescing

Turn on/off coalescing of the CUDA commands output

set cuda context_events

Turn on/off context events (push/pop/create/destroy) output messages

set cuda defer_kernel_launch_notifications

Turn on/off deferral of kernel launch messages

set cuda disassemble_from

Choose whether to disassemble from the device memory (slow) or the ELF image (fast)

set cuda gpu_busy_check

Turn on/off GPU busy check the next time the inferior application is run

set cuda hide_internal_frame

Set hiding of the internal CUDA frames when printing the call stack

set cuda kernel_events

Turn on/off kernel events (launch/termination) output messages

set cuda launch_blocking

Turn on/off CUDA kernel launch blocking (effective starting from the next run)

set cuda memcheck

Turn on/off CUDA Memory Checker next time the inferior application is run

set cuda notify

Thread to notify about CUDA events when no other known candidate

set cuda software_preemption

Turn on/off CUDA software preemption debugging the next time the inferior application is run

set cuda thread_selection

Set the automatic thread selection policy to use when the current thread cannot be selected

OPTIONS

CUDA-GDB supports the same options as GDB, with the addition of the following options:

--cuda-use-lockfile=VALUE

If VALUE is 0, CUDA-GDB will not create a lock file and will not enforce the exclusive usage of GPUs.

FILES

~/.cuda-gdbinit

Per user configuration file. The file format is identical to ~/.gdbinit. See gdb(5) for further details.

/tmp/cuda-dbg/

Temporary directory where the debugger stores intermediate files. The directory must have write and and exec permissions. Use $TMPDIR to override the location.

NOTES

For more information about cuda-gdb, please see the online documentation at http://docs.nvidia.com/cuda/cuda-gdb/index.html.

For more information about CUDA-related features, type help cuda or help info cuda from within CUDA-GDB, or consult the CUDA-GDB online manual.

REPORTING BUGS

Email bugs to [email protected]

COPYRIGHT

©2013 NVIDIA Corporation. All rights reserved.