initial

.gitignore

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+nvidia_smi_exporter
+sample.csv

README.md

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+# nvidia_smi_exporter
+
+nvidia-smi metrics exporter for Prometheus
+
+## Build
+```
+> go build -v nvidia_smi_exporter
+```
+
+## Run
+```
+> ./nvidia_smi_exporter [<port>]
+```
+Default port is 9101
+
+
+### localhost:9101/metrics
+```
+temperature_gpu{gpu="TITAN X (Pascal)[0]"} 41
+utilization_gpu{gpu="TITAN X (Pascal)[0]"} 0
+utilization_memory{gpu="TITAN X (Pascal)[0]"} 0
+memory_total{gpu="TITAN X (Pascal)[0]"} 12189
+memory_free{gpu="TITAN X (Pascal)[0]"} 12189
+memory_used{gpu="TITAN X (Pascal)[0]"} 0
+temperature_gpu{gpu="TITAN X (Pascal)[1]"} 78
+utilization_gpu{gpu="TITAN X (Pascal)[1]"} 95
+utilization_memory{gpu="TITAN X (Pascal)[1]"} 59
+memory_total{gpu="TITAN X (Pascal)[1]"} 12189
+memory_free{gpu="TITAN X (Pascal)[1]"} 1738
+memory_used{gpu="TITAN X (Pascal)[1]"} 10451
+temperature_gpu{gpu="TITAN X (Pascal)[2]"} 83
+utilization_gpu{gpu="TITAN X (Pascal)[2]"} 99
+utilization_memory{gpu="TITAN X (Pascal)[2]"} 82
+memory_total{gpu="TITAN X (Pascal)[2]"} 12189
+memory_free{gpu="TITAN X (Pascal)[2]"} 190
+memory_used{gpu="TITAN X (Pascal)[2]"} 11999
+temperature_gpu{gpu="TITAN X (Pascal)[3]"} 84
+utilization_gpu{gpu="TITAN X (Pascal)[3]"} 97
+utilization_memory{gpu="TITAN X (Pascal)[3]"} 76
+memory_total{gpu="TITAN X (Pascal)[3]"} 12189
+memory_free{gpu="TITAN X (Pascal)[3]"} 536
+memory_used{gpu="TITAN X (Pascal)[3]"} 11653
+```
+
+### Exact command
+```
+nvidia-smi --query-gpu=name,index,temperature.gpu,utilization.gpu,utilization.memory,memory.total,memory.free,memory.used --format=csv,noheader,nounits
+```
+
+### Prometheus example config
+
+```
+- job_name: "gpu_exporter"
+  static_configs:
+  - targets: ['localhost:9101']
+```
+

nvidia_smi_exporter.go

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+package main
+
+import (
+    "bytes"
+    "encoding/csv"
+    "fmt"
+    "net/http"
+    "log"
+    "os"
+    "os/exec"
+    "strings"
+)
+
+
+// name, index, temperature.gpu, utilization.gpu,
+// utilization.memory, memory.total, memory.free, memory.used
+
+func metrics(response http.ResponseWriter, request *http.Request) {
+    out, err := exec.Command(
+        "nvidia-smi",
+        "--query-gpu=name,index,temperature.gpu,utilization.gpu,utilization.memory,memory.total,memory.free,memory.used",
+        "--format=csv,noheader,nounits").Output()
+
+    if err != nil {
+        fmt.Printf("%s\n", err)
+        return
+    }
+
+    csvReader := csv.NewReader(bytes.NewReader(out))
+    csvReader.TrimLeadingSpace = true
+    records, err := csvReader.ReadAll()
+
+    if err != nil {
+        fmt.Printf("%s\n", err)
+        return
+    }
+
+    metricList := []string {
+        "temperature.gpu", "utilization.gpu",
+        "utilization.memory", "memory.total", "memory.free", "memory.used"}
+
+    result := ""
+    for _, row := range records {
+        name := fmt.Sprintf("%s[%s]", row[0], row[1])
+        for idx, value := range row[2:] {
+            result = fmt.Sprintf(
+                "%s%s{gpu=\"%s\"} %s\n", result,
+                metricList[idx], name, value)
+        }
+    }
+
+    fmt.Fprintf(response, strings.Replace(result, ".", "_", -1))
+}
+
+func main() {
+    port := ":9101"
+    if len(os.Args) > 1 {
+        port = ":" + os.Args[1]
+    }
+
+    http.HandleFunc("/metrics/", metrics)
+    err := http.ListenAndServe(port, nil)
+    if err != nil {
+        log.Fatal("ListenAndServe: ", err)
+    }
+}