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// SPDX-License-Identifier: GPL-3.0-or-later
package nvidia_smi
import (
"bufio"
"bytes"
"encoding/csv"
"errors"
"fmt"
"io"
"regexp"
"strconv"
"strings"
)
// use of property aliases is not implemented ('"<property>" or "<alias>"' in help-query-gpu)
var knownProperties = map[string]bool{
"uuid": true,
"name": true,
"fan.speed": true,
"pstate": true,
"utilization.gpu": true,
"utilization.memory": true,
"memory.used": true,
"memory.free": true,
"memory.reserved": true,
"temperature.gpu": true,
"clocks.current.graphics": true,
"clocks.current.video": true,
"clocks.current.sm": true,
"clocks.current.memory": true,
"power.draw": true,
}
var reHelpProperty = regexp.MustCompile(`"([a-zA-Z_.]+)"`)
func (nv *NvidiaSMI) collectGPUInfoCSV(mx map[string]int64) error {
if len(nv.gpuQueryProperties) == 0 {
bs, err := nv.exec.queryHelpQueryGPU()
if err != nil {
return err
}
sc := bufio.NewScanner(bytes.NewBuffer(bs))
for sc.Scan() {
if !strings.HasPrefix(sc.Text(), "\"") {
continue
}
matches := reHelpProperty.FindAllString(sc.Text(), -1)
if len(matches) == 0 {
continue
}
for _, v := range matches {
if v = strings.Trim(v, "\""); knownProperties[v] {
nv.gpuQueryProperties = append(nv.gpuQueryProperties, v)
}
}
}
nv.Debugf("found query GPU properties: %v", nv.gpuQueryProperties)
}
bs, err := nv.exec.queryGPUInfoCSV(nv.gpuQueryProperties)
if err != nil {
return err
}
nv.Debugf("GPU info:\n%s", bs)
r := csv.NewReader(bytes.NewBuffer(bs))
r.Comma = ','
r.ReuseRecord = true
r.TrimLeadingSpace = true
// skip headers
if _, err := r.Read(); err != nil && err != io.EOF {
return err
}
var gpusInfo []csvGPUInfo
for {
record, err := r.Read()
if err != nil {
if errors.Is(err, io.EOF) {
break
}
return err
}
if len(record) != len(nv.gpuQueryProperties) {
return fmt.Errorf("record values (%d) != queried properties (%d)", len(record), len(nv.gpuQueryProperties))
}
var gpu csvGPUInfo
for i, v := range record {
switch nv.gpuQueryProperties[i] {
case "uuid":
gpu.uuid = v
case "name":
gpu.name = v
case "fan.speed":
gpu.fanSpeed = v
case "pstate":
gpu.pstate = v
case "utilization.gpu":
gpu.utilizationGPU = v
case "utilization.memory":
gpu.utilizationMemory = v
case "memory.used":
gpu.memoryUsed = v
case "memory.free":
gpu.memoryFree = v
case "memory.reserved":
gpu.memoryReserved = v
case "temperature.gpu":
gpu.temperatureGPU = v
case "clocks.current.graphics":
gpu.clocksCurrentGraphics = v
case "clocks.current.video":
gpu.clocksCurrentVideo = v
case "clocks.current.sm":
gpu.clocksCurrentSM = v
case "clocks.current.memory":
gpu.clocksCurrentMemory = v
case "power.draw":
gpu.powerDraw = v
}
}
gpusInfo = append(gpusInfo, gpu)
}
seen := make(map[string]bool)
for _, gpu := range gpusInfo {
if !isValidValue(gpu.uuid) || !isValidValue(gpu.name) {
continue
}
px := "gpu_" + gpu.uuid + "_"
seen[px] = true
if !nv.gpus[px] {
nv.gpus[px] = true
nv.addGPUCSVCharts(gpu)
}
addMetric(mx, px+"fan_speed_perc", gpu.fanSpeed, 0)
addMetric(mx, px+"gpu_utilization", gpu.utilizationGPU, 0)
addMetric(mx, px+"mem_utilization", gpu.utilizationMemory, 0)
addMetric(mx, px+"frame_buffer_memory_usage_free", gpu.memoryFree, 1024*1024) // MiB => bytes
addMetric(mx, px+"frame_buffer_memory_usage_used", gpu.memoryUsed, 1024*1024) // MiB => bytes
addMetric(mx, px+"frame_buffer_memory_usage_reserved", gpu.memoryReserved, 1024*1024) // MiB => bytes
addMetric(mx, px+"temperature", gpu.temperatureGPU, 0)
addMetric(mx, px+"graphics_clock", gpu.clocksCurrentGraphics, 0)
addMetric(mx, px+"video_clock", gpu.clocksCurrentVideo, 0)
addMetric(mx, px+"sm_clock", gpu.clocksCurrentSM, 0)
addMetric(mx, px+"mem_clock", gpu.clocksCurrentMemory, 0)
addMetric(mx, px+"power_draw", gpu.powerDraw, 0)
for i := 0; i < 16; i++ {
if s := "P" + strconv.Itoa(i); gpu.pstate == s {
mx[px+"performance_state_"+s] = 1
} else {
mx[px+"performance_state_"+s] = 0
}
}
}
for px := range nv.gpus {
if !seen[px] {
delete(nv.gpus, px)
nv.removeCharts(px)
}
}
return nil
}
type (
csvGPUInfo struct {
uuid string
name string
fanSpeed string
pstate string
utilizationGPU string
utilizationMemory string
memoryUsed string
memoryFree string
memoryReserved string
temperatureGPU string
clocksCurrentGraphics string
clocksCurrentVideo string
clocksCurrentSM string
clocksCurrentMemory string
powerDraw string
}
)
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