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DEVELOPMENT: adjusted to merge gres_gpu branch
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,141 @@ | ||
| /* Copyright 2020 Joeri Hermans, Victor Penso, Matteo Dessalvi | ||
| This program is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation, either version 3 of the License, or | ||
| (at your option) any later version. | ||
| This program is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/prometheus/common/log" | ||
| "io/ioutil" | ||
| "os/exec" | ||
| "strings" | ||
| "strconv" | ||
| ) | ||
|
|
||
| type GPUsMetrics struct { | ||
| alloc float64 | ||
| idle float64 | ||
| total float64 | ||
| utilization float64 | ||
| } | ||
|
|
||
| func GPUsGetMetrics() *GPUsMetrics { | ||
| return ParseGPUsMetrics() | ||
| } | ||
|
|
||
| func ParseAllocatedGPUs() float64 { | ||
| var num_gpus = 0.0 | ||
|
|
||
| args := []string{"-a", "-X", "--format=Allocgres", "--state=RUNNING", "--noheader", "--parsable2"} | ||
| output := string(Execute("sacct", args)) | ||
| if len(output) > 0 { | ||
| for _, line := range strings.Split(output, "\n") { | ||
| if len(line) > 0 { | ||
| line = strings.Trim(line, "\"") | ||
| descriptor := strings.TrimPrefix(line, "gpu:") | ||
| job_gpus, _ := strconv.ParseFloat(descriptor, 64) | ||
| num_gpus += job_gpus | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return num_gpus | ||
| } | ||
|
|
||
| func ParseTotalGPUs() float64 { | ||
| var num_gpus = 0.0 | ||
|
|
||
| args := []string{"-h", "-o \"%n %G\""} | ||
| output := string(Execute("sinfo", args)) | ||
| if len(output) > 0 { | ||
| for _, line := range strings.Split(output, "\n") { | ||
| if len(line) > 0 { | ||
| line = strings.Trim(line, "\"") | ||
| descriptor := strings.Fields(line)[1] | ||
| descriptor = strings.TrimPrefix(descriptor, "gpu:") | ||
| descriptor = strings.Split(descriptor, "(")[0] | ||
| node_gpus, _ := strconv.ParseFloat(descriptor, 64) | ||
| num_gpus += node_gpus | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return num_gpus | ||
| } | ||
|
|
||
| func ParseGPUsMetrics() *GPUsMetrics { | ||
| var gm GPUsMetrics | ||
| total_gpus := ParseTotalGPUs() | ||
| allocated_gpus := ParseAllocatedGPUs() | ||
| gm.alloc = allocated_gpus | ||
| gm.idle = total_gpus - allocated_gpus | ||
| gm.total = total_gpus | ||
| gm.utilization = allocated_gpus / total_gpus | ||
| return &gm | ||
| } | ||
|
|
||
| // Execute the sinfo command and return its output | ||
| func Execute(command string, arguments []string) []byte { | ||
| cmd := exec.Command(command, arguments...) | ||
| stdout, err := cmd.StdoutPipe() | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| if err := cmd.Start(); err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| out, _ := ioutil.ReadAll(stdout) | ||
| if err := cmd.Wait(); err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| return out | ||
| } | ||
|
|
||
| /* | ||
| * Implement the Prometheus Collector interface and feed the | ||
| * Slurm scheduler metrics into it. | ||
| * https://godoc.org/github.com/prometheus/client_golang/prometheus#Collector | ||
| */ | ||
|
|
||
| func NewGPUsCollector() *GPUsCollector { | ||
| return &GPUsCollector{ | ||
| alloc: prometheus.NewDesc("slurm_gpus_alloc", "Allocated GPUs", nil, nil), | ||
| idle: prometheus.NewDesc("slurm_gpus_idle", "Idle GPUs", nil, nil), | ||
| total: prometheus.NewDesc("slurm_gpus_total", "Total GPUs", nil, nil), | ||
| utilization: prometheus.NewDesc("slurm_gpus_utilization", "Total GPU utilization", nil, nil), | ||
| } | ||
| } | ||
|
|
||
| type GPUsCollector struct { | ||
| alloc *prometheus.Desc | ||
| idle *prometheus.Desc | ||
| total *prometheus.Desc | ||
| utilization *prometheus.Desc | ||
| } | ||
|
|
||
| // Send all metric descriptions | ||
| func (cc *GPUsCollector) Describe(ch chan<- *prometheus.Desc) { | ||
| ch <- cc.alloc | ||
| ch <- cc.idle | ||
| ch <- cc.total | ||
| ch <- cc.utilization | ||
| } | ||
| func (cc *GPUsCollector) Collect(ch chan<- prometheus.Metric) { | ||
| cm := GPUsGetMetrics() | ||
| ch <- prometheus.MustNewConstMetric(cc.alloc, prometheus.GaugeValue, cm.alloc) | ||
| ch <- prometheus.MustNewConstMetric(cc.idle, prometheus.GaugeValue, cm.idle) | ||
| ch <- prometheus.MustNewConstMetric(cc.total, prometheus.GaugeValue, cm.total) | ||
| ch <- prometheus.MustNewConstMetric(cc.utilization, prometheus.GaugeValue, cm.utilization) | ||
| } |
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