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kentrussell committed cdfbef4 Apr 14, 2020
Revert "make module python2 compatible"
RHEL8 has unilaterally broken python2+python3 compatibility. Since
Python2 is EOL, we must move it back to python3, until the transition
over to the LIB-backed SMI is done, at least

This reverts commit 56e55c1.

Change-Id: I4d657c0b140fb91a9329e2f44c1250c92f2b61e8


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ROCm System Management Interface

This repository includes the rocm-smi tool. This tool exposes functionality for clock and temperature management of your ROCm enabled system.


You may find rocm-smi at the following location after installing the rocm package:


Alternatively, you may clone this repository and run the tool directly.


The SMI will report a "version" which is the version of the kernel installed:

AMD ROCm System Management Interface v$(uname)

For ROCk installations, this will be the AMDGPU module version (e.g. 5.0.71) For non-ROCk or monolithic ROCk installations, this will be the kernel version, which will be equivalent to the following bash command:

$(uname -a) | cut -d ' ' -f 3)


For detailed and up to date usage information, we recommend consulting the help:

/opt/rocm/bin/rocm-smi -h

For convenience purposes, following is the output from the -h flag:

usage: rocm-smi [-h] [-d DEVICE [DEVICE ...]] [--alldevices] [--showhw] [-a] [-i] [-v] [--showdriverversion]
                [--showfwinfo [BLOCK [BLOCK ...]]] [--showmclkrange] [--showmemvendor] [--showsclkrange]
                [--showproductname] [--showserial] [--showuniqueid] [--showvoltagerange] [--showbus] [--showpagesinfo]
                [--showpendingpages] [--showretiredpages] [--showunreservablepages] [-f] [-P] [-t] [-u] [--showmemuse]
                [--showvoltage] [-b] [-c] [-g] [-l] [-M] [-m] [-o] [-p] [-S] [-s] [--showmeminfo TYPE [TYPE ...]]
                [--showpids] [--showpidgpus [SHOWPIDGPUS [SHOWPIDGPUS ...]]] [--showreplaycount]
                [--showrasinfo BLOCK [BLOCK ...]] [--showvc] [--showxgmierr] [-r] [--resetfans] [--resetprofile]
                [--resetpoweroverdrive] [--resetxgmierr] [--setsclk LEVEL [LEVEL ...]] [--setmclk LEVEL [LEVEL ...]]
                [--setpcie LEVEL [LEVEL ...]] [--setslevel SCLKLEVEL SCLK SVOLT] [--setmlevel MCLKLEVEL MCLK MVOLT]
                [--setvc POINT SCLK SVOLT] [--setsrange MINMAX SCLK] [--setmrange MINMAX SCLK] [--setfan LEVEL]
                [--setperflevel LEVEL] [--setoverdrive %] [--setmemoverdrive %] [--setpoweroverdrive WATTS]
                [--setprofile SETPROFILE] [--rasenable BLOCK ERRTYPE] [--rasdisable BLOCK ERRTYPE] [--rasinject BLOCK]
                [--gpureset] [--load FILE | --save FILE] [--autorespond RESPONSE] [--loglevel LEVEL] [--json] [--csv]

AMD ROCm System Management Interface | ROCM-SMI version: 1.4.1 |

optional arguments:
  -h, --help                                            show this help message and exit
  --gpureset                                            Reset specified GPU (One GPU must be specified)
  --load FILE                                           Load Clock, Fan, Performance and Profile settings from FILE
  --save FILE                                           Save Clock, Fan, Performance and Profile settings to FILE

  -d DEVICE [DEVICE ...], --device DEVICE [DEVICE ...]  Execute command on specified device

Display Options:
  --alldevices                                          Execute command on non-AMD devices as well as AMD devices
  --showhw                                              Show Hardware details
  -a, --showallinfo                                     Show Temperature, Fan and Clock values

  -i, --showid                                          Show GPU ID
  -v, --showvbios                                       Show VBIOS version
  --showdriverversion                                   Show kernel driver version
  --showfwinfo [BLOCK [BLOCK ...]]                      Show FW information
  --showmclkrange                                       Show mclk range
  --showmemvendor                                       Show GPU memory vendor
  --showsclkrange                                       Show sclk range
  --showproductname                                     Show SKU/Vendor name
  --showserial                                          Show GPU's Serial Number
  --showuniqueid                                        Show GPU's Unique ID
  --showvoltagerange                                    Show voltage range
  --showbus                                             Show PCI bus number

Pages information:
  --showpagesinfo                                       Show retired, pending and unreservable pages
  --showpendingpages                                    Show pending retired pages
  --showretiredpages                                    Show retired pages
  --showunreservablepages                               Show unreservable pages

Hardware-related information:
  -f, --showfan                                         Show current fan speed
  -P, --showpower                                       Show current Average Graphics Package Power Consumption
  -t, --showtemp                                        Show current temperature
  -u, --showuse                                         Show current GPU use
  --showmemuse                                          Show current GPU memory used
  --showvoltage                                         Show current GPU voltage

Software-related/controlled information:
  -b, --showbw                                          Show estimated PCIe use
  -c, --showclocks                                      Show current clock frequencies
  -g, --showgpuclocks                                   Show current GPU clock frequencies
  -l, --showprofile                                     Show Compute Profile attributes
  -M, --showmaxpower                                    Show maximum graphics package power this GPU will consume
  -m, --showmemoverdrive                                Show current GPU Memory Clock OverDrive level
  -o, --showoverdrive                                   Show current GPU Clock OverDrive level
  -p, --showperflevel                                   Show current DPM Performance Level
  -S, --showclkvolt                                     Show supported GPU and Memory Clocks and Voltages
  -s, --showclkfrq                                      Show supported GPU and Memory Clock
  --showmeminfo TYPE [TYPE ...]                         Show Memory usage information for given block(s) TYPE
  --showpids                                            Show current running KFD PIDs
  --showpidgpus [SHOWPIDGPUS [SHOWPIDGPUS ...]]         Show GPUs used by specified KFD PIDs (all if no arg given)
  --showreplaycount                                     Show PCIe Replay Count
  --showrasinfo BLOCK [BLOCK ...]                       Show RAS enablement information and error counts for the
                                                        specified block(s)
  --showvc                                              Show voltage curve
  --showxgmierr                                         Show XGMI error information since last read

Set options:
  --setsclk LEVEL [LEVEL ...]                           Set GPU Clock Frequency Level(s) (requires manual Perf level)
  --setmclk LEVEL [LEVEL ...]                           Set GPU Memory Clock Frequency Level(s) (requires manual Perf
  --setpcie LEVEL [LEVEL ...]                           Set PCIE Clock Frequency Level(s) (requires manual Perf level)
  --setslevel SCLKLEVEL SCLK SVOLT                      Change GPU Clock frequency (MHz) and Voltage (mV) for a specific
  --setmlevel MCLKLEVEL MCLK MVOLT                      Change GPU Memory clock frequency (MHz) and Voltage for (mV) a
                                                        specific Level
  --setvc POINT SCLK SVOLT                              Change SCLK Voltage Curve (MHz mV) for a specific point
  --setsrange MINMAX SCLK                               Set min(0) or max(1) SCLK speed
  --setmrange MINMAX SCLK                               Set min(0) or max(1) MCLK speed
  --setfan LEVEL                                        Set GPU Fan Speed (Level or %)
  --setperflevel LEVEL                                  Set Performance Level
  --setoverdrive %                                      Set GPU OverDrive level (requires manual|high Perf level)
  --setmemoverdrive %                                   Set GPU Memory Overclock OverDrive level (requires manual|high
                                                        Perf level)
  --setpoweroverdrive WATTS                             Set the maximum GPU power using Power OverDrive in Watts
  --setprofile SETPROFILE                               Specify Power Profile level (#) or a quoted string of CUSTOM
                                                        Profile attributes "# # # #..." (requires manual Perf level)
  --rasenable BLOCK ERRTYPE                             Enable RAS for specified block and error type
  --rasdisable BLOCK ERRTYPE                            Disable RAS for specified block and error type
  --rasinject BLOCK                                     Inject RAS poison for specified block (ONLY WORKS ON UNSECURE

Reset options:
  -r, --resetclocks                                     Reset clocks and OverDrive to default
  --resetfans                                           Reset fans to automatic (driver) control
  --resetprofile                                        Reset Power Profile back to default
  --resetpoweroverdrive                                 Set the maximum GPU power back to the device deafult state
  --resetxgmierr                                        Reset XGMI error count

Auto-response options:
  --autorespond RESPONSE                                Response to automatically provide for all prompts (NOT

Output options:
  --loglevel LEVEL                                      How much output will be printed for what program is doing, one
                                                        of debug/info/warning/error/critical
  --json                                                Print output in JSON format
  --csv                                                 Print output in CSV format

Detailed Option Descriptions

--setsclk/--setmclk # [# # ...]: This allows you to set a mask for the levels. For example, if a GPU has 8 clock levels, you can set a mask to use levels 0, 5, 6 and 7 with --setsclk 0 5 6 7 . This will only use the base level, and the top 3 clock levels. This will allow you to keep the GPU at base level when there is no GPU load, and the top 3 levels when the GPU load increases.

    The clock levels will change dynamically based on GPU load based on the default
    Compute and Graphics profiles. The thresholds and delays for a custom mask cannot
    be controlled through the SMI tool

    This flag automatically sets the Performance Level to "manual" as the mask is not
    applied when the Performance level is set to auto

--setfan LEVEL: This sets the fan speed to a value ranging from 0 to maxlevel, or from 0%-100%

If the level ends with a %, the fan speed is calculated as pct*maxlevel/100
    (maxlevel is usually 255, but is determined by the ASIC)

NOTE: While the hardware is usually capable of overriding this value when required, it is
      recommended to not set the fan level lower than the default value for extended periods
      of time

--setperflevel LEVEL: This lets you use the pre-defined Performance Level values for clocks and power profile, which can include: auto (Automatically change values based on GPU workload) low (Keep values low, regardless of workload) high (Keep values high, regardless of workload) manual (Only use values defined by --setsclk and --setmclk)

--setoverdrive/--setmemoverdrive #: DEPRECATED IN NEWER KERNEL VERSIONS (use --setslevel/--setmlevel instead) This sets the percentage above maximum for the max Performance Level. For example, --setoverdrive 20 will increase the top sclk level by 20%, similarly --setmemoverdrive 20 will increase the top mclk level by 20%. Thus if the maximum clock level is 1000MHz, then --setoverdrive 20 will increase the maximum clock to 1200MHz

    This option can be used in conjunction with the --setsclk/--setmclk mask

    Operating the GPU outside of specifications can cause irreparable damage to your hardware
    Please observe the warning displayed when using this option

    This flag automatically sets the clock to the highest level, as only the highest level is
    increased by the OverDrive value

--setpoweroverdrive/--resetpoweroverdrive #: This allows users to change the maximum power available to a GPU package. The input value is in Watts. This limit is enforced by the hardware, and some cards allow users to set it to a higher value than the default that ships with the GPU. This Power OverDrive mode allows the GPU to run at higher frequencies for longer periods of time, though this may mean the GPU uses more power than it is allowed to use per power supply specifications. Each GPU has a model-specific maximum Power OverDrive that is will take; attempting to set a higher limit than that will cause this command to fail.

    Operating the GPU outside of specifications can cause irreparable damage to your hardware
    Please observe the warning displayed when using this option

--setprofile SETPROFILE: The Compute Profile accepts 1 or n parameters, either the Profile to select (see --showprofile for a list of preset Power Profiles) or a quoted string of values for the CUSTOM profile. NOTE: These values can vary based on the ASIC, and may include: SCLK_PROFILE_ENABLE - Whether or not to apply the 3 following SCLK settings (0=disable,1=enable) NOTE: This is a hidden field. If set to 0, the following 3 values are displayed as '-' SCLK_UP_HYST - Delay before sclk is increased (in milliseconds) SCLK_DOWN_HYST - Delay before sclk is decresed (in milliseconds) SCLK_ACTIVE_LEVEL - Workload required before sclk levels change (in %) MCLK_PROFILE_ENABLE - Whether or not to apply the 3 following MCLK settings (0=disable,1=enable) NOTE: This is a hidden field. If set to 0, the following 3 values are displayed as '-' MCLK_UP_HYST - Delay before mclk is increased (in milliseconds) MCLK_DOWN_HYST - Delay before mclk is decresed (in milliseconds) MCLK_ACTIVE_LEVEL - Workload required before mclk levels change (in %)

    BUSY_SET_POINT       - Threshold for raw activity level before levels change
    FPS                  - Frames Per Second
    USE_RLC_BUSY         - When set to 1, DPM is switched up as long as RLC busy message is received
    MIN_ACTIVE_LEVEL     - Workload required before levels change (in %)

    When a compute queue is detected, the COMPUTE Power Profile values will be automatically
    applied to the system, provided that the Perf Level is set to "auto"

    The CUSTOM Power Profile is only applied when the Performance Level is set to "manual"
    so using this flag will automatically set the performance level to "manual"

    It is not possible to modify the non-CUSTOM Profiles. These are hard-coded by the kernel

-P, --showpower: Show Average Graphics Package power consumption

"Graphics Package" refers to the GPU plus any HBM (High-Bandwidth memory) modules, if present

-M, --showmaxpower: Show the maximum Graphics Package power that the GPU will attempt to consume. This limit is enforced by the hardware.

--loglevel: This will allow the user to set a logging level for the SMI's actions. Currently this is only implemented for sysfs writes, but can easily be expanded upon in the future to log other things from the SMI

--showmeminfo: This allows the user to see the amount of used and total memory for a given block (vram, vis_vram, gtt). It returns the number of bytes used and total number of bytes for each block 'all' can be passed as a field to return all blocks, otherwise a quoted-string is used for multiple values (e.g. "vram vis_vram") vram refers to the Video RAM, or graphics memory, on the specified device vis_vram refers to Visible VRAM, which is the CPU-accessible video memory on the device gtt refers to the Graphics Translation Table

-b, --showbw: This shows an approximation of the number of bytes received and sent by the GPU over the last second through the PCIe bus. Note that this will not work for APUs since data for the GPU portion of the APU goes through the memory fabric and does not 'enter/exit' the chip via the PCIe interface, thus no accesses are generated, and the performance counters can't count accesses that are not generated. NOTE: It is not possible to easily grab the size of every packet that is transmitted in real time, so the kernel estimates the bandwidth by taking the maximum payload size (mps), which is the max size that a PCIe packet can be. and multiplies it by the number of packets received and sent. This means that the SMI will report the maximum estimated bandwidth, the actual usage could (and likely will be) less

--showrasinfo: This shows the RAS information for a given block. This includes enablement of the block (currently GFX, SDMA and UMC are the only supported blocks) and the number of errors ue - Uncorrectable errors ce - Correctable errors

Clock Type Descriptions

DCEFCLK - DCE (Display) FCLK - Data fabric (VG20 and later) - Data flow from XGMI, Memory, PCIe SCLK - GFXCLK (Graphics core) Note - SOCCLK split from SCLK as of Vega10. Pre-Vega10 they were both controlled by SCLK MCLK - GPU Memory (VRAM) PCLK - PCIe bus Note - This gives 2 speeds, PCIe Gen1 x1 and the highest available based on the hardware SOCCLK - System clock (VG10 and later) - Data Fabric (DF), MM HUB, AT HUB, SYSTEM HUB, OSS, DFD Note - DF split from SOCCLK as of Vega20. Pre-Vega20 they were both controlled by SOCCLK

--gpureset: This flag will attempt to reset the GPU for a specified device. This will invoke the GPU reset through the kernel debugfs file amdgpu_gpu_recover. Note that GPU reset will not always work, depending on the manner in which the GPU is hung.

--showdriverversion: This flag will print out the AMDGPU module version for amdgpu-pro or ROCK kernels. For other kernels, it will simply print out the name of the kernel (uname)

--showserial: This flag will print out the serial number for the graphics card NOTE: This is currently only supported on Vega20 server cards that support it. Consumer cards and cards older than Vega20 will not support this feature.

--showproductname: This uses the pci.ids file to print out more information regarding the GPUs on the system. 'update-pciids' may need to be executed on the machine to get the latest PCI ID snapshot, as certain newer GPUs will not be present in the stock pci.ids file, and the file may even be absent on certain OS installation types

--showpagesinfo | --showretiredpages | --showpendingpages | --showunreservablepages: These flags display the different "bad pages" as reported by the kernel. The three types of pages are: Retired pages (reserved pages) - These pages are reserved and are unable to be used Pending pages - These pages are pending for reservation, and will be reserved/retired Unreservable pages - These pages are not reservable for some reason

--showmemuse | --showuse | --showmeminfo --showuse and --showmemuse are used to indicate how busy the respective blocks are. For example, for --showuse (gpu_busy_percent sysfs file), the SMU samples every ms or so to see if any GPU block (RLC, MEC, PFP, CP) is busy. If so, that's 1 (or high). If not, that's 0 (low). If we have 5 high and 5 low samples, that means 50% utilization (50% GPU busy, or 50% GPU use). The windows and sampling vary from generation to generation, but that is how GPU and VRAM use is calculated in a generic sense. --showmeminfo (and VRAM% in concise output) will show the amount of VRAM used (visible, total, GTT), as well as the total available for those partitions. The percentage shown there indicates the amount of used memory in terms of current allocations

OverDrive settings

Enabling OverDrive requires both a card that support OverDrive and a driver parameter that enables its use. Because OverDrive features can damage your card, most workstation and server GPUs cannot use OverDrive. Consumer GPUs that can use OverDrive must enable this feature by setting bit 14 in the amdgpu driver's ppfeaturemask module parameter

For OverDrive functionality, the OverDrive bit (bit 14) must be enabled (by default, the OverDrive bit is disabled on the ROCK and upstream kernels). This can be done by setting amdgpu.ppfeaturemask accordingly in the kernel parameters, or by changing the default value inside amdgpu_drv.c (if building your own kernel).

As an example, if the ppfeaturemask is set to 0xffffbfff (11111111111111111011111111111111), then enabling the OverDrive bit would make it 0xffffffff (11111111111111111111111111111111).

These are the flags that require OverDrive functionality to be enabled for the flag to work: --showclkvolt --showvoltagerange --showvc --showsclkrange --showmclkrange --setslevel --setmlevel --setoverdrive --setpoweroverdrive --resetpoweroverdrive --setvc --setsrange --setmrange

Testing changes

After making changes to the SMI, run the test script to ensure that all functionality remains intact before uploading the patch. This can be done using:

./ /opt/rocm/bin/rocm-smi

The test can run all flags for the SMI, or specific flags can be tested with the -s option.

Any new functionality added to the SMI should have a corresponding test added to the test script.


The information contained herein is for informational purposes only, and is subject to change without notice. While every precaution has been taken in the preparation of this document, it may contain technical inaccuracies, omissions and typographical errors, and AMD is under no obligation to update or otherwise correct this information. Advanced Micro Devices, Inc. makes no representations or warranties with respect to the accuracy or completeness of the contents of this document, and assumes no liability of any kind, including the implied warranties of noninfringement, merchantability or fitness for particular purposes, with respect to the operation or use of AMD hardware, software or other products described herein. No license, including implied or arising by estoppel, to any intellectual property rights is granted by this document. Terms and limitations applicable to the purchase or use of AMD's products are as set forth in a signed agreement between the parties or in AMD's Standard Terms and Conditions of Sale.

AMD, the AMD Arrow logo, and combinations thereof are trademarks of Advanced Micro Devices, Inc. Other product names used in this publication are for identification purposes only and may be trademarks of their respective companies.

Copyright (c) 2014-2019 Advanced Micro Devices, Inc. All rights reserved.

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