librenms-librenms/includes/polling/applications/nvidia.inc.php

<?php

use LibreNMS\RRD\RrdDefinition;

$name = 'nvidia';
$app_id = $app['app_id'];

$options      = '-O qv';
$mib          = 'NET-SNMP-EXTEND-MIB';
$oid          = 'nsExtendOutputFull.6.110.118.105.100.105.97';
$gpus = snmp_walk($device, $oid, $options, $mib);
update_application($app, $gpus);

$gpuArray = explode("\n", $gpus);

$rrd_def = RrdDefinition::make()
    ->addDataset('pwr', 'GAUGE', 0)
    ->addDataset('temp', 'GAUGE', 0)
    ->addDataset('sm', 'GAUGE', 0)
    ->addDataset('mem', 'GAUGE', 0)
    ->addDataset('enc', 'GAUGE', 0)
    ->addDataset('dec', 'GAUGE', 0)
    ->addDataset('mclk', 'GAUGE', 0)
    ->addDataset('pclk', 'GAUGE', 0)
    ->addDataset('pviol', 'GAUGE', 0)
    ->addDataset('tviol', 'GAUGE', 0)
    ->addDataset('fb', 'GAUGE', 0)
    ->addDataset('bar1', 'GAUGE', 0)
    ->addDataset('sbecc', 'GAUGE', 0)
    ->addDataset('dbecc', 'GAUGE', 0)
    ->addDataset('pci', 'GAUGE', 0)
    ->addDataset('rxpci', 'GAUGE', 0)
    ->addDataset('txpci', 'GAUGE', 0);

$int=0;
while (isset($gpuArray[$int])) {
    list($gpu, $pwr, $temp, $sm, $mem, $enc, $dec, $mclk, $pclk, $pviol, $tviol,
        $fb, $bar1, $sbecc, $dbecc, $pci, $rxpci, $txpci)=explode(",", $gpuArray[$int]);

        $rrd_name = array('app', $name, $app_id, $int);

        $fields = array(
            'pwr' => $pwr,
            'temp' => $temp,
            'sm' => $sm,
            'mem' => $mem,
            'enc' => $enc,
            'dec' => $dec,
            'mclk' => $mclk,
            'pclk' => $pclk,
            'pviol' => $pviol,
            'tviol' => $tviol,
            'fb' => $fb,
            'bar1' => $bar1,
            'sbecc' => $sbecc,
            'dbecc' => $dbecc,
            'pci' => $pci,
            'rxpci' => $rxpci,
            'txpci' => $txpci
        );

        $tags = array('name' => $name, 'app_id' => $app_id, 'rrd_def' => $rrd_def, 'rrd_name' => $rrd_name);
        data_update($device, 'app', $tags, $fields);

    $int++;
}