nvidia-smi(1) NVIDIA nvidia-smi(1)NAME
nvidia-smi - NVIDIA System Management Interface program
SYNOPSIS
nvidia-smi [OPTION1 [ARG1]] [OPTION2 [ARG2]] ...
DESCRIPTION
NVSMI provides monitoring information for each of NVIDIA's Tesla
devices and each of its high-end Fermi-based and Kepler-based Quadro
devices. It provides very limited information for other types of
NVIDIA devices. See NVML documentation at http://devel‐
oper.nvidia.com/nvidia-management-library-nvml for what features are
supported on a particular device. The data is presented in either
plain text or XML format, via stdout or a file. NVSMI also provides
several management operations for changing device state.
Note that the functionality of NVSMI is exposed through the NVML C-
based library. See the NVIDIA developer website for more information
about NVML. Python and Perl wrappers to NVML are also available. The
output of NVSMI is not guaranteed to be backwards compatible; NVML and
the bindings are backwards compatible.
http://developer.nvidia.com/nvidia-management-library-nvml/
http://pypi.python.org/pypi/nvidia-ml-py/
http://search.cpan.org/search?query=nvidia%3A%3Aml
OPTIONS
GENERAL OPTIONS
-h, --help
Print usage information and exit.
SUMMARY OPTIONS
-L, --list-gpus
List each of the NVIDIA GPUs in the system, along with their UUIDs.
QUERY OPTIONS
-q, --query
Display GPU or Unit info. Displayed info includes all data listed in
the (GPU ATTRIBUTES) or (UNIT ATTRIBUTES) sections of this document.
Some devices and/or environments don't support all possible informa‐
tion. Any unsupported data is indicated by a "N/A" in the output. By
default information for all available GPUs or Units is displayed. Use
the -i option to restrict the output to a single GPU or Unit.
[plus optional]
-u, --unit
Display Unit data instead of GPU data. Unit data is only available for
NVIDIA S-class Tesla enclosures.
-i, --id=ID
Display data for a single specified GPU or Unit. The specified id may
be the GPU/Unit's 0-based index in the natural enumeration returned by
the driver, the GPU's board serial number, the GPU's UUID, or the GPU's
PCI bus ID (as domain:bus:device.function in hex). It is recommended
that users desiring consistency use either UUID or PCI bus ID, since
device enumeration ordering is not guaranteed to be consistent between
reboots and board serial number might be shared between multiple GPUs
on the same board.
-f FILE, --filename=FILE
Redirect query output to the specified file in place of the default
stdout. The specified file will be overwritten.
-x, --xml-format
Produce XML output in place of the default human-readable format. Both
GPU and Unit query outputs conform to corresponding DTDs. These are
available via the --dtd flag.
--dtd
Use with -x. Embed the DTD in the XML output.
-d TYPE, --display=TYPE
Display only selected information: MEMORY, UTILIZATION, ECC, TEMPERA‐
TURE, POWER, CLOCK, COMPUTE, PIDS, PERFORMANCE, SUPPORTED_CLOCKS,
PAGE_RETIREMENT, ACCOUNTING Flags can be combined with comma e.g.
"MEMORY,ECC". Doesn't work with -u/--unit or -x/--xml-format flags.
-l SEC, --loop=SEC
Continuously report query data at the specified interval, rather than
the default of just once. The application will sleep in-between
queries. Note that on Linux ECC error or XID error events will print
out during the sleep period if the -x flag was not specified. Pressing
Ctrl+C at any time will abort the loop, which will otherwise run indef‐
initely. If no argument is specified for the -l form a default inter‐
val of 5 seconds is used.
SELECTIVE QUERY OPTIONS
Allows the caller to pass an explicit list of properties to query.
[one of]
--query-gpu=
Information about GPU Pass comma separated list of properties you want
to query. e.g. --query-gpu=pci.bus_id,persistence_mode Call
--help-query-gpu for more info.
--query-supported-clocks=
List of supported clocks Call --help-query-supported-clocks for more
info.
--query-compute-apps=
List of currently active compute processes. Call --help-query-com‐
pute-apps for more info.
--query-accounted-apps=
List of accounted compute processes. Call --help-query-accounted-apps
for more info.
--query-retired-pages=
List of GPU device memory pages that have been retired. Call
--help-query-retired-pages for more info.
[mandatory]
--format=
Comma separated list of format options:
· csv - comma separated values (MANDATORY)
· noheader - skip first line with column headers
· nounits - don't print units for numerical values
[plus any of]
-i, --id=ID
Display data for a single specified GPU. The specified id may be the
GPU's 0-based index in the natural enumeration returned by the driver,
the GPU's board serial number, the GPU's UUID, or the GPU's PCI bus ID
(as domain:bus:device.function in hex). It is recommended that users
desiring consistency use either UUID or PCI bus ID, since device enu‐
meration ordering is not guaranteed to be consistent between reboots
and board serial number might be shared between multiple GPUs on the
same board.
-f FILE, --filename=FILE
Redirect query output to the specified file in place of the default
stdout. The specified file will be overwritten.
-l SEC, --loop=SEC
Continuously report query data at the specified interval, rather than
the default of just once. The application will sleep in-between
queries. Note that on Linux ECC error or XID error events will print
out during the sleep period if the -x flag was not specified. Pressing
Ctrl+C at any time will abort the loop, which will otherwise run indef‐
initely. If no argument is specified for the -l form a default inter‐
val of 5 seconds is used.
-lms ms, --loop-ms=ms
Same as -l,--loop but in milliseconds.
DEVICE MODIFICATION OPTIONS
[any one of]
-pm, --persistence-mode=MODE
Set the persistence mode for the target GPUs. See the (GPU ATTRIBUTES)
section for a description of persistence mode. Requires root. Will
impact all GPUs unless a single GPU is specified using the -i argument.
The effect of this operation is immediate. However, it does not per‐
sist across reboots. After each reboot persistence mode will default
to "Disabled". Available on Linux only.
-e, --ecc-config=CONFIG
Set the ECC mode for the target GPUs. See the (GPU ATTRIBUTES) section
for a description of ECC mode. Requires root. Will impact all GPUs
unless a single GPU is specified using the -i argument. This setting
takes effect after the next reboot and is persistent.
-p, --reset-ecc-errors=TYPE
Reset the ECC error counters for the target GPUs. See the (GPU
ATTRIBUTES) section for a description of ECC error counter types.
Available arguments are 0|VOLATILE or 1|AGGREGATE. Requires root.
Will impact all GPUs unless a single GPU is specified using the -i
argument. The effect of this operation is immediate.
-c, --compute-mode=MODE
Set the compute mode for the target GPUs. See the (GPU ATTRIBUTES)
section for a description of compute mode. Requires root. Will impact
all GPUs unless a single GPU is specified using the -i argument. The
effect of this operation is immediate. However, it does not persist
across reboots. After each reboot compute mode will reset to
"DEFAULT".
-dm TYPE, --driver-model=TYPE
-fdm TYPE, --force-driver-model=TYPE
Enable or disable TCC driver model. For Windows only. Requires admin‐
istrator privileges. -dm will fail if a display is attached, but -fdm
will force the driver model to change. Will impact all GPUs unless a
single GPU is specified using the -i argument. A reboot is required
for the change to take place. See Driver Model for more information on
Windows driver models.
--gom=MODE
Set GPU Operation Mode: 0/ALL_ON, 1/COMPUTE, 2/LOW_DP Supported on
GK110 M-class and X-class Tesla products from the Kepler family. Not
supported on Quadro and Tesla C-class products. Requires administrator
privileges. See GPU Operation Mode for more information about GOM.
GOM changes take effect after reboot. The reboot requirement might be
removed in the future. Compute only GOMs don't support WDDM (Windows
Display Driver Model)
-r, --gpu-reset
Trigger a reset of the GPU. Can be used to clear GPU HW and SW state
in situations that would otherwise require a machine reboot. Typically
useful if a double bit ECC error has occurred. Requires -i switch to
target specific device. Requires root. There can't be any applica‐
tions using this particular device (e.g. CUDA application, graphics
application like X server, monitoring application like other instance
of nvidia-smi). There also can't be any compute applications running
on any other GPU in the system. Only on supported devices from Fermi
and Kepler family running on Linux.
GPU reset is not guaranteed to work in all cases. It is not recommended
for production environments at this time. In some situations there may
be HW components on the board that fail to revert back to an initial
state following the reset request. This is more likely to be seen on
Fermi-generation products vs. Kepler, and more likely to be seen if the
reset is being performed on a hung GPU.
Following a reset, it is recommended that the health of the GPU be ver‐
ified before further use. The nvidia-healthmon tool is a good choice
for this test. If the GPU is not healthy a complete reset should be
instigated by power cycling the node. nvidia-healthmon is distributed
as a part of TDK http://developer.nvidia.com/tesla-deployment-kit
-ac, --applications-clocks=MEM_CLOCK,GRAPHICS_CLOCK
Specifies maximum <memory,graphics> clocks as a pair (e.g. 2000,800)
that defines GPU's speed while running applications on a GPU. Only on
supported device from Kepler family. Requires root.
-rac, --reset-applications-clocks
Resets the applications clocks to the default value. Only on supported
device from Kepler family. Requires root.
-pl, --power-limit=POWER_LIMIT
Specifies maximum power limit in watts. Accepts integer and floating
point numbers. Only on supported devices from Kepler family. Requires
administrator privileges. Value needs to be between Min and Max Power
Limit as reported by nvidia-smi.
-am, --accounting-mode
Enables or disables GPU Accounting. With GPU Accounting one can keep
track of usage of resources throughout lifespan of a single process.
Only on supported devices from Kepler family. Requires administrator
privileges.
-caa, --clear-accounted-apps
Clears all processes accounted so far. Only on supported devices from
Kepler family. Requires administrator privileges.
[plus optional]
-i, --id=ID
Modify a single specified GPU. The specified id may be the GPU/Unit's
0-based index in the natural enumeration returned by the driver, the
GPU's board serial number, the GPU's UUID, or the GPU's PCI bus ID (as
domain:bus:device.function in hex). It is recommended that users
desiring consistency use either UUID or PCI bus ID, since device enu‐
meration ordering is not guaranteed to be consistent between reboots
and board serial number might be shared between multiple GPUs on the
same board.
UNIT MODIFICATION OPTIONS
-t, --toggle-led=STATE
Set the LED indicator state on the front and back of the unit to the
specified color. See the (UNIT ATTRIBUTES) section for a description
of the LED states. Allowed colors are 0|GREEN and 1|AMBER. Requires
root.
[plus optional]
-i, --id=ID
Modify a single specified Unit. The specified id is the Unit's 0-based
index in the natural enumeration returned by the driver.
SHOW DTD OPTIONS
--dtd
Display Device or Unit DTD.
[plus optional]
-f FILE, --filename=FILE
Redirect query output to the specified file in place of the default
stdout. The specified file will be overwritten.
-u, --unit
Display Unit DTD instead of device DTD.
RETURN VALUE
Return code reflects whether the operation succeeded or failed and what
was the reason of failure.
· Return code 0 - Success
· Return code 2 - A supplied argument or flag is invalid
· Return code 3 - The requested operation is not available on tar‐
get device
· Return code 4 - The current user does not have permission to
access this device or perform this operation
· Return code 6 - A query to find an object was unsuccessful
· Return code 8 - A device's external power cables are not prop‐
erly attached
· Return code 9 - NVIDIA driver is not loaded
· Return code 10 - NVIDIA Kernel detected an interrupt issue with
a GPU
· Return code 12 - NVML Shared Library couldn't be found or loaded
· Return code 13 - Local version of NVML doesn't implement this
function
· Return code 14 - infoROM is corrupted
· Return code 15 - The GPU has fallen off the bus or has otherwise
become inaccessible
· Return code 255 - Other error or internal driver error occurred
GPU ATTRIBUTES
The following list describes all possible data returned by the -q
device query option. Unless otherwise noted all numerical results are
base 10 and unitless.
Timestamp
The current system timestamp at the time nvidia-smi was invoked. For‐
mat is "Day-of-week Month Day HH:MM:SS Year".
Driver Version
The version of the installed NVIDIA display driver. This is an
alphanumeric string.
Attached GPUs
The number of NVIDIA GPUs in the system.
Product Name
The official product name of the GPU. This is an alphanumeric string.
For all products.
Display Mode
A flag that indicates whether a physical display (e.g. monitor) is cur‐
rently connected to any of the GPU's connectors. "Enabled" indicates
an attached display. "Disabled" indicates otherwise.
Display Active
A flag that indicates whether a display is initialized on the GPU's
(e.g. memory is allocated on the device for display). Display can be
active even when no monitor is physically attached. "Enabled" indi‐
cates an active display. "Disabled" indicates otherwise.
Persistence Mode
A flag that indicates whether persistence mode is enabled for the GPU.
Value is either "Enabled" or "Disabled". When persistence mode is
enabled the NVIDIA driver remains loaded even when no active clients,
such as X11 or nvidia-smi, exist. This minimizes the driver load
latency associated with running dependent apps, such as CUDA programs.
For all CUDA-capable products. Linux only.
Accounting Mode
A flag that indicates whether accounting mode is enabled for the GPU
Value is either When accounting is enabled statistics are calculated
for each compute process running on the GPU. Statistics are available
for query after the process terminates. See --help-query-accounted-
apps for more info.
Accounting Mode Buffer Size
Returns the size of the circular buffer that holds list of processes
that can be queried for accounting stats. This is the maximum number
of processes that accounting information will be stored for before
information about oldest processes will get overwritten by information
about new processes.
Driver Model
On Windows, the TCC and WDDM driver models are supported. The driver
model can be changed with the (-dm) or (-fdm) flags. The TCC driver
model is optimized for compute applications. I.E. kernel launch times
will be quicker with TCC. The WDDM driver model is designed for graph‐
ics applications and is not recommended for compute applications.
Linux does not support multiple driver models, and will always have the
value of "N/A".
Current The driver model currently in use. Always "N/A" on
Linux.
Pending The driver model that will be used on the next reboot.
Always "N/A" on Linux.
Serial Number
This number matches the serial number physically printed on each board.
It is a globally unique immutable alphanumeric value.
GPU UUID
This value is the globally unique immutable alphanumeric identifier of
the GPU. It does not correspond to any physical label on the board.
VBIOS Version
The BIOS of the GPU board.
Inforom Version
Version numbers for each object in the GPU board's inforom storage.
The inforom is a small, persistent store of configuration and state
data for the GPU. All inforom version fields are numerical. It can be
useful to know these version numbers because some GPU features are only
available with inforoms of a certain version or higher.
If any of the fields below return Unknown Error additional Inforom ver‐
ification check is performed and appropriate warning message is dis‐
played.
Image Version Global version of the infoROM image. Image version just
like VBIOS version uniquely describes the exact version
of the infoROM flashed on the board in contrast to
infoROM object version which is only an indicator of
supported features.
OEM Object Version for the OEM configuration data.
ECC Object Version for the ECC recording data.
Power Object Version for the power management data.
GPU Operation Mode
GOM allows to reduce power usage and optimize GPU throughput by dis‐
abling GPU features.
Each GOM is designed to meet specific user needs.
In "All On" mode everything is enabled and running at full speed.
The "Compute" mode is designed for running only compute tasks. Graphics
operations are not allowed.
The "Low Double Precision" mode is designed for running graphics appli‐
cations that don't require high bandwidth double precision.
GOM can be changed with the (--gom) flag.
Supported on GK110 M-class and X-class Tesla products from the Kepler
family. Not supported on Quadro and Tesla C-class products.
Current The GOM currently in use.
Pending The GOM that will be used on the next reboot.
PCI
Basic PCI info for the device. Some of this information may change
whenever cards are added/removed/moved in a system. For all products.
Bus PCI bus number, in hex
Device PCI device number, in hex
Domain PCI domain number, in hex
Device Id PCI vendor device id, in hex
Sub System Id PCI Sub System id, in hex
Bus Id PCI bus id as "domain:bus:device.function", in hex
GPU Link information
The PCIe link generation and bus width
Current The current link generation and width. These may be
reduced when the GPU is not in use.
Maximum The maximum link generation and width possible with this
GPU and system configuration. For example, if the GPU
supports a higher PCIe generation than the system sup‐
ports then this reports the system PCIe generation.
Fan Speed
The fan speed value is the percent of maximum speed that the device's
fan is currently intended to run at. It ranges from 0 to 100%. Note:
The reported speed is the intended fan speed. If the fan is physically
blocked and unable to spin, this output will not match the actual fan
speed. Many parts do not report fan speeds because they rely on cool‐
ing via fans in the surrounding enclosure. For all discrete products
with dedicated fans.
Performance State
The current performance state for the GPU. States range from P0 (maxi‐
mum performance) to P12 (minimum performance).
Clocks Throttle Reasons
Retrieves information about factors that are reducing the frequency of
clocks. Only on supported Tesla devices from Kepler family.
If all throttle reasons are returned as "Not Active" it means that
clocks are running as high as possible.
Idle Nothing is running on the GPU and the clocks are drop‐
ping to Idle state. This limiter may be removed in a
later release.
Application Clocks Setting
GPU clocks are limited by applications clocks setting.
E.g. can be changed using nvidia-smi --applica‐
tions-clocks=
SW Power Cap SW Power Scaling algorithm is reducing the clocks below
requested clocks because the GPU is consuming too much
power. E.g. SW power cap limit can be changed with
nvidia-smi --power-limit=
HW Slowdown HW Slowdown (reducing the core clocks by a factor of 2
or more) is engaged.
This is an indicator of:
* temperature being too high
* External Power Brake Assertion is triggered (e.g. by
the system power supply)
* Power draw is too high and Fast Trigger protection is
reducing the clocks
* May be also reported during PState or clock change
** This behavior may be removed in a later release
Unknown Some other unspecified factor is reducing the clocks.
Memory Usage
On-board memory information. Reported total memory is affected by ECC
state. If ECC is enabled the total available memory is decreased by
several percent, due to the requisite parity bits. The driver may also
reserve a small amount of memory for internal use, even without active
work on the GPU. For all products.
Total Total installed GPU memory.
Used Total memory allocated by active contexts.
Free Total free memory.
Compute Mode
The compute mode flag indicates whether individual or multiple compute
applications may run on the GPU.
"Default" means multiple contexts are allowed per device.
"Exclusive Thread" means only one context is allowed per device, usable
from one thread at a time.
"Exclusive Process" means only one context is allowed per device,
usable from multiple threads at a time.
"Prohibited" means no contexts are allowed per device (no compute
apps).
"EXCLUSIVE_PROCESS" was added in CUDA 4.0. Prior CUDA releases sup‐
ported only one exclusive mode, which is equivalent to "EXCLU‐
SIVE_THREAD" in CUDA 4.0 and beyond.
For all CUDA-capable products.
Utilization
Utilization rates report how busy each GPU is over time, and can be
used to determine how much an application is using the GPUs in the sys‐
tem.
Note: During driver initialization when ECC is enabled one can see high
GPU and Memory Utilization readings. This is caused by ECC Memory
Scrubbing mechanism that is performed during driver initialization.
GPU Percent of time over the past sample period during which
one or more kernels was executing on the GPU. The sam‐
ple period may be between 1 second and 1/6 second
depending on the product.
Memory Percent of time over the past sample period during which
global (device) memory was being read or written. The
sample period may be between 1 second and 1/6 second
depending on the product.
Ecc Mode
A flag that indicates whether ECC support is enabled. May be either
"Enabled" or "Disabled". Changes to ECC mode require a reboot.
Requires Inforom ECC object version 1.0 or higher.
Current The ECC mode that the GPU is currently operating under.
Pending The ECC mode that the GPU will operate under after the
next reboot.
ECC Errors
NVIDIA GPUs can provide error counts for various types of ECC errors.
Some ECC errors are either single or double bit, where single bit
errors are corrected and double bit errors are uncorrectable. Texture
memory errors may be correctable via resend or uncorrectable if the
resend fails. These errors are available across two timescales
(volatile and aggregate). Single bit ECC errors are automatically cor‐
rected by the HW and do not result in data corruption. Double bit
errors are detected but not corrected. Please see the ECC documents on
the web for information on compute application behavior when double bit
errors occur. Volatile error counters track the number of errors
detected since the last driver load. Aggregate error counts persist
indefinitely and thus act as a lifetime counter.
A note about volatile counts: On Windows this is once per boot. On
Linux this can be more frequent. On Linux the driver unloads when no
active clients exist. Hence, if persistence mode is enabled or there
is always a driver client active (e.g. X11), then Linux also sees per-
boot behavior. If not, volatile counts are reset each time a compute
app is run.
Tesla and Quadro products from the Fermi and Kepler family can display
total ECC error counts, as well as a breakdown of errors based on loca‐
tion on the chip. The locations are described below. Location-based
data for aggregate error counts requires Inforom ECC object version
2.0. All other ECC counts require ECC object version 1.0.
Device Memory Errors detected in global device memory.
Register File Errors detected in register file memory.
L1 Cache Errors detected in the L1 cache.
L2 Cache Errors detected in the L2 cache.
Texture Memory Parity errors detected in texture memory.
Total Total errors detected across entire chip. Sum of Device
Memory, Register File, L1 Cache, L2 Cache and Texture
Memory.
Page Retirement
NVIDIA GPUs can retire pages of GPU device memory when they become
unreliable. This can happen when multiple single bit ECC errors occur
for the same page, or on a double bit ECC error. When a page is
retired, the NVIDIA driver will hide it such that no driver, or appli‐
cation memory allocations can access it.
Double Bit ECC The number of GPU device memory pages that have been
retired due to a double bit ECC error.
Single Bit ECC The number of GPU device memory pages that have been
retired due to multiple single bit ECC errors.
Pending Checks if any GPU device memory pages are pending retirement on
the next reboot. Pages that are pending retirement can still be allo‐
cated, and may cause further reliability issues.
Temperature
Readings from temperature sensors on the board. All readings are in
degrees C. Not all products support all reading types. In particular,
products in module form factors that rely on case fans or passive cool‐
ing do not usually provide temperature readings. See below for
restrictions.
GPU Core GPU temperature. For all discrete and S-class
products.
Power Readings
Power readings help to shed light on the current power usage of the
GPU, and the factors that affect that usage. When power management is
enabled the GPU limits power draw under load to fit within a predefined
power envelope by manipulating the current performance state. See
below for limits of availability.
Power State Power State is deprecated and has been renamed to Per‐
formance State in 2.285. To maintain XML compatibility,
in XML format Performance State is listed in both
places.
Power Management
A flag that indicates whether power management is
enabled. Either "Supported" or "N/A". Requires Inforom
PWR object version 3.0 or higher or Kepler device.
Power Draw The last measured power draw for the entire board, in
watts. Only available if power management is supported.
This reading is accurate to within +/- 5 watts.
Requires Inforom PWR object version 3.0 or higher or
Kepler device.
Power Limit The software power limit, in watts. Set by software
such as nvidia-smi. Only available if power management
is supported. Requires Inforom PWR object version 3.0
or higher or Kepler device. On Kepler devices Power
Limit can be adjusted using -pl,--power-limit= switches.
Enforced Power Limit
The power management algorithm's power ceiling, in
watts. Total board power draw is manipulated by the
power management algorithm such that it stays under this
value. This limit is the minimum of various limits such
as the software limit listed above. Only available if
power management is supported. Requires a Kepler
device.
Default Power Limit
The default power management algorithm's power ceiling,
in watts. Power Limit will be set back to Default Power
Limit after driver unload. Only on supported devices
from Kepler family.
Min Power Limit
The minimum value in watts that power limit can be set
to. Only on supported devices from Kepler family.
Max Power Limit
The maximum value in watts that power limit can be set
to. Only on supported devices from Kepler family.
Clocks
Current frequency at which parts of the GPU are running. All readings
are in MHz.
Graphics Current frequency of graphics (shader) clock.
SM Current frequency of SM (Streaming Multiprocessor)
clock.
Memory Current frequency of memory clock.
Applications Clocks
User specified frequency at which applications will be running at. Can
be changed with [-ac | --applications-clocks] switches.
Graphics User specified frequency of graphics (shader) clock.
Memory User specified frequency of memory clock.
Default Applications Clocks
Default frequency at which applications will be running at. Applica‐
tion clocks can be changed with [-ac | --applications-clocks] switches.
Application clocks can be set to default using [-rac | --reset-applica‐
tions-clocks] switches.
Graphics Default frequency of applications graphics (shader)
clock.
Memory Default frequency of applications memory clock.
Max Clocks
Maximum frequency at which parts of the GPU are design to run. All
readings are in MHz.
On GPUs from Fermi family current P0 clocks (reported in Clocks sec‐
tion) can differ from max clocks by few MHz.
Graphics Maximum frequency of graphics (shader) clock.
SM Maximum frequency of SM (Streaming Multiprocessor)
clock.
Memory Maximum frequency of memory clock.
Supported clocks
List of possible memory and graphics clocks combinations that the GPU
can operate on (not taking into account HW brake reduced clocks).
These are the only clock combinations that can be passed to --applica‐
tions-clocks flag. Supported Clocks are listed only when -q -d SUP‐
PORTED_CLOCKS switches are provided or in XML format.
Compute Processes
List of processes having compute context on the device.
Each Entry is of format "<pid>. <Process name>"
Used GPU Memory
Amount memory used on the device by the context. Not
available on Windows when running in WDDM mode because
Windows KMD manages all the memory not NVIDIA driver.
UNIT ATTRIBUTES
The following list describes all possible data returned by the -q-u
unit query option. Unless otherwise noted all numerical results are
base 10 and unitless.
Timestamp
The current system timestamp at the time nvidia-smi was invoked. For‐
mat is "Day-of-week Month Day HH:MM:SS Year".
Driver Version
The version of the installed NVIDIA display driver. Format is
"Major-Number.Minor-Number".
HIC Info
Information about any Host Interface Cards (HIC) that are installed in
the system.
Firmware Version
The version of the firmware running on the HIC.
Attached Units
The number of attached Units in the system.
Product Name
The official product name of the unit. This is an alphanumeric value.
For all S-class products.
Product Id
The product identifier for the unit. This is an alphanumeric value of
the form "part1-part2-part3". For all S-class products.
Product Serial
The immutable globally unique identifier for the unit. This is an
alphanumeric value. For all S-class products.
Firmware Version
The version of the firmware running on the unit. Format is "Major-Num‐
ber.Minor-Number". For all S-class products.
LED State
The LED indicator is used to flag systems with potential problems. An
LED color of AMBER indicates an issue. For all S-class products.
Color The color of the LED indicator. Either "GREEN" or
"AMBER".
Cause The reason for the current LED color. The cause may be
listed as any combination of "Unknown", "Set to AMBER by
host system", "Thermal sensor failure", "Fan failure"
and "Temperature exceeds critical limit".
Temperature
Temperature readings for important components of the Unit. All read‐
ings are in degrees C. Not all readings may be available. For all S-
class products.
Intake Air temperature at the unit intake.
Exhaust Air temperature at the unit exhaust point.
Board Air temperature across the unit board.
PSU
Readings for the unit power supply. For all S-class products.
State Operating state of the PSU. The power supply state can
be any of the following: "Normal", "Abnormal", "High
voltage", "Fan failure", "Heatsink temperature", "Cur‐
rent limit", "Voltage below UV alarm threshold",
"Low-voltage", "I2C remote off command", "MOD_DISABLE
input" or "Short pin transition".
Voltage PSU voltage setting, in volts.
Current PSU current draw, in amps.
Fan Info
Fan readings for the unit. A reading is provided for each fan, of
which there can be many. For all S-class products.
State The state of the fan, either "NORMAL" or "FAILED".
Speed For a healthy fan, the fan's speed in RPM.
Attached GPUs
A list of PCI bus ids that correspond to each of the GPUs attached to
the unit. The bus ids have the form "domain:bus:device.function", in
hex. For all S-class products.
NOTES
On Linux, NVIDIA device files may be modified by nvidia-smi if run as
root. Please see the relevant section of the driver README file.
The -a and -g arguments are now deprecated in favor of -q and -i,
respectively. However, the old arguments still work for this release.
EXAMPLES
nvidia-smi -q
Query attributes for all GPUs once, and display in plain text to std‐
out.
nvidia-smi --format=csv,noheader --query-gpu=uuid,persistence_mode
Query UUID and persistence mode of all GPUs in the system.
nvidia-smi -q -d ECC,POWER -i 0 -l 10 -f out.log
Query ECC errors and power consumption for GPU 0 at a frequency of 10
seconds, indefinitely, and record to the file out.log.
nvidia-smi -c 1 -i
GPU-b2f5f1b745e3d23d-65a3a26d-097db358-7303e0b6-149642ff3d219f8587cde3a8
Set the compute mode to "EXCLUSIVE_THREAD" for GPU with UUID
"GPU-b2f5f1b745e3d23d-65a3a26d-097db358-7303e0b6-149642ff3d219f8587cde3a8".
nvidia-smi -q -u -x --dtd
Query attributes for all Units once, and display in XML format with
embedded DTD to stdout.
nvidia-smi --dtd -u -f nvsmi_unit.dtd
Write the Unit DTD to nvsmi_unit.dtd.
nvidia-smi -q -d SUPPORTED_CLOCKS
Display supported clocks of all GPUs.
nvidia-smi -i 0 --applications-clocks 2500,745
Set applications clocks to 2500 MHz memory, and 745 MHz graphics.
CHANGE LOG
=== Known Issues ===
* On Linux when X Server is running Used GPU Memory in Compute Pro‐
cesses section may contain value that is larger than the actual value.
This will be fixed in a future release.
* On Linux GPU Reset can't be triggered when there is pending GOM
change.
* On Linux GPU Reset may not successfully change pending ECC mode. A
full reboot may be required to enable the mode change.
* Accounting memory utilization information is disabled. This will
be re-enabled in a later build
=== Changes between nvidia-smi v4.304 and v4.319 Production ===
* Added reporting of Display Active state and updated documentation
to clarify how it differs from Display Mode and Display Active state
* For consistency on multi-GPU boards nvidia-smi -L always displays
UUID instead of serial number
* Added machine readable selective reporting. See SELECTIVE QUERY
OPTIONS section of nvidia-smi -h
* Added queries for page retirement information. See --help-query-
retired-pages and -d PAGE_RETIREMENT
* Renamed Clock Throttle Reason User Defined Clocks to Applications
Clocks Setting
* On error, return codes have distinct non zero values for each error
class. See RETURN VALUE section
* nvidia-smi -i can now query information from healthy GPU when there
is a problem with other GPU in the system
* All messages that point to a problem with a GPU print pci bus id of
a GPU at fault
* New flag --loop-ms for querying information at higher rates than
once a second (can have negative impact on system performance)
* Added queries for accounting procsses. See --help-query-accounted-
apps and -d ACCOUNTING
* Added the enforced power limit to the query output
=== Changes between nvidia-smi v4.304 RC and v4.304 Production ===
* Added reporting of GPU Operation Mode (GOM)
* Added new --gom switch to set GPU Operation Mode
=== Changes between nvidia-smi v3.295 and v4.304 RC ===
* Reformatted non-verbose output due to user feedback. Removed pend‐
ing information from table.
* Print out helpful message if initialization fails due to kernel
module not receiving interrupts
* Better error handling when NVML shared library is not present in
the system
* Added new --applications-clocks switch
* Added new filter to --display switch. Run with -d SUPPORTED_CLOCKS
to list possible clocks on a GPU
* When reporting free memory, calculate it from the rounded total and
used memory so that values add up
* Added reporting of power management limit constraints and default
limit
* Added new --power-limit switch
* Added reporting of texture memory ECC errors
* Added reporting of Clock Throttle Reasons
=== Changes between nvidia-smi v2.285 and v3.295 ===
* Clearer error reporting for running commands (like changing compute
mode)
* When running commands on multiple GPUs at once N/A errors are
treated as warnings.
* nvidia-smi -i now also supports UUID
* UUID format changed to match UUID standard and will report a dif‐
ferent value.
=== Changes between nvidia-smi v2.0 and v2.285 ===
* Report VBIOS version.
* Added -d/--display flag to filter parts of data
* Added reporting of PCI Sub System ID
* Updated docs to indicate we support M2075 and C2075
* Report HIC HWBC firmware version with -u switch
* Report max(P0) clocks next to current clocks
* Added --dtd flag to print the device or unit DTD
* Added message when NVIDIA driver is not running
* Added reporting of PCIe link generation (max and current), and link
width (max and current).
* Getting pending driver model works on non-admin
* Added support for running nvidia-smi on Windows Guest accounts
* Running nvidia-smi without -q command will output non verbose ver‐
sion of -q instead of help
* Fixed parsing of -l/--loop= argument (default value, 0, to big
value)
* Changed format of pciBusId (to XXXX:XX:XX.X - this change was visi‐
ble in 280)
* Parsing of busId for -i command is less restrictive. You can pass
0:2:0.0 or 0000:02:00 and other variations
* Changed versioning scheme to also include "driver version"
* XML format always conforms to DTD, even when error conditions occur
* Added support for single and double bit ECC events and XID errors
(enabled by default with -l flag disabled for -x flag)
* Added device reset -r --gpu-reset flags
* Added listing of compute running processes
* Renamed power state to performance state. Deprecated support exists
in XML output only.
* Updated DTD version number to 2.0 to match the updated XML output
SEE ALSO
On Linux, the driver README is installed as
/usr/share/doc/NVIDIA_GLX-1.0/README.txt
AUTHOR
NVIDIA Corporation
COPYRIGHT
Copyright 2011-2013 NVIDIA Corporation.
nvidia-smi 5.325 2013/7/31 nvidia-smi(1)
