pmdanvidia(1) — Linux manual page


PMDANVIDIA(1)            General Commands Manual           PMDANVIDIA(1)

NAME         top

       pmdanvidia - nvidia gpu metrics domain agent (PMDA)

SYNOPSIS         top

       $PCP_PMDAS_DIR/nvidia/pmdanvidia [-d domain] [-l logfile] [-t

DESCRIPTION         top

       pmdanvidia is a Performance Metrics Domain Agent (PMDA) which
       extracts performance metrics describing the metrics available on
       NVIDIA GPU cards via the NVML library.

       The nvidia PMDA exports metrics that measure gpu activity, memory
       utilization, fan speed, etc on NVIDIA Tesla and Quadro cards.
       Metrics are unlikely to be available for consumer class cards.

       A brief description of the pmdanvidia command line options

       -d   It is absolutely crucial that the performance metrics domain
            number specified here is unique and consistent.  That is,
            domain should be different for every PMDA on the one host,
            and the same domain number should be used for the same PMDA
            on all hosts.

       -l   Location of the log file.  By default, a log file named
            nvidia.log is written in the current directory of pmcd(1)
            when pmdanvidia is started, i.e.  $PCP_LOG_DIR/pmcd.  If the
            log file cannot be created or is not writable, output is
            written to the standard error instead.

       -t   Enables and sets a sampling interval for automatic
            refreshing of metric values.  The functionality is disabled
            by default, however this option allows a time interval to be
            specified on which all values are sampled - this has the
            effect of constantly updating the accumulating metrics, with
            the goal of assisting client tools such as pcp-atop(1) and
            pmlogger(1) to observe sub-sample time changes in GPU and
            process state.  Typically these tools have longer sampling
            intervals, and can thus 'miss' activity happening during
            their sampling interval.

INSTALLATION         top

       The nvidia PMDA is not installed and available by default.  If
       you want to undo the installation, do the following as root:

            # cd $PCP_PMDAS_DIR/nvidia
            # ./Remove

       If you want to establish access to the names, help text and
       values for the nvidia performance metrics once more, after
       removal, do the following as root:

            # cd $PCP_PMDAS_DIR/nvidia
            # ./Install

       pmdanvidia is launched by pmcd(1) and should never be executed
       directly.  The Install and Remove scripts notify pmcd(1) when the
       agent is installed or removed.

FILES         top

              command line options used to launch pmdanvidia
              default help text file for the nvidia metrics
              installation script for the pmdanvidia agent
              undo installation script for the pmdanvidia agent
              default log file for error messages and other information
              from pmdanvidia


       Environment variables with the prefix PCP_ are used to
       parameterize the file and directory names used by PCP.  On each
       installation, the file /etc/pcp.conf contains the local values
       for these variables.  The $PCP_CONF variable may be used to
       specify an alternative configuration file, as described in

SEE ALSO         top

       PCPIntro(1), pcp-atop(1), pmcd(1), pmlogger(1), pcp.conf(5) and

COLOPHON         top

       This page is part of the PCP (Performance Co-Pilot) project.
       Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this manual
       page, send it to  This page was obtained from the
       project's upstream Git repository
       ⟨⟩ on 2023-12-22.
       (At that time, the date of the most recent commit that was found
       in the repository was 2023-12-16.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

Performance Co-Pilot               PCP                     PMDANVIDIA(1)

Pages that refer to this page: pcp-atop(1)