Merge branch '12573-crunch2-slurm-priority' closes #12573

[arvados.git] / services / crunch-dispatch-slurm / crunch-dispatch-slurm.go

diff --git a/services/crunch-dispatch-slurm/crunch-dispatch-slurm.go b/services/crunch-dispatch-slurm/crunch-dispatch-slurm.go
index d322b0f3f6dcf53735df8e920f07d0329397bbbf..3d094c7f6e3a68f745f02be1950cc76eb8fdecd2 100644 (file)
--- a/services/crunch-dispatch-slurm/crunch-dispatch-slurm.go
+++ b/services/crunch-dispatch-slurm/crunch-dispatch-slurm.go
@@ -164,6 +164,17 @@ func checkSqueueForOrphans(dispatcher *dispatch.Dispatcher, sqCheck *SqueueCheck
        }
 }
 
+func niceness(priority int) int {
+       if priority > 1000 {
+               priority = 1000
+       }
+       if priority < 0 {
+               priority = 0
+       }
+       // Niceness range 1-10000
+       return (1000 - priority) * 10
+}
+
 // sbatchCmd
 func sbatchFunc(container arvados.Container) *exec.Cmd {
        mem := int64(math.Ceil(float64(container.RuntimeConstraints.RAM+container.RuntimeConstraints.KeepCacheRAM) / float64(1048576)))
@@ -182,6 +193,7 @@ func sbatchFunc(container arvados.Container) *exec.Cmd {
        sbatchArgs = append(sbatchArgs, fmt.Sprintf("--mem=%d", mem))
        sbatchArgs = append(sbatchArgs, fmt.Sprintf("--cpus-per-task=%d", container.RuntimeConstraints.VCPUs))
        sbatchArgs = append(sbatchArgs, fmt.Sprintf("--tmp=%d", disk))
+       sbatchArgs = append(sbatchArgs, fmt.Sprintf("--nice=%d", niceness(container.Priority)))
        if len(container.SchedulingParameters.Partitions) > 0 {
                sbatchArgs = append(sbatchArgs, fmt.Sprintf("--partition=%s", strings.Join(container.SchedulingParameters.Partitions, ",")))
        }
@@ -194,9 +206,15 @@ func scancelFunc(container arvados.Container) *exec.Cmd {
        return exec.Command("scancel", "--name="+container.UUID)
 }
 
+// scontrolCmd
+func scontrolFunc(container arvados.Container) *exec.Cmd {
+       return exec.Command("scontrol", "update", "JobName="+container.UUID, fmt.Sprintf("Nice=%d", niceness(container.Priority)))
+}
+
 // Wrap these so that they can be overridden by tests
 var sbatchCmd = sbatchFunc
 var scancelCmd = scancelFunc
+var scontrolCmd = scontrolFunc
 
 // Submit job to slurm using sbatch.
 func submit(dispatcher *dispatch.Dispatcher, container arvados.Container, crunchRunCommand []string) error {
@@ -290,6 +308,10 @@ func run(disp *dispatch.Dispatcher, ctr arvados.Container, status <-chan arvados
                        } else if updated.Priority == 0 {
                                log.Printf("Container %s has state %q, priority %d: cancel slurm job", ctr.UUID, updated.State, updated.Priority)
                                scancel(ctr)
+                       } else if niceness(updated.Priority) != sqCheck.GetNiceness(ctr.UUID) && sqCheck.GetNiceness(ctr.UUID) != -1 {
+                               // dynamically adjust priority
+                               log.Printf("Container priority %v != %v", niceness(updated.Priority), sqCheck.GetNiceness(ctr.UUID))
+                               scontrolUpdate(updated)
                        }
                }
        }
@@ -310,6 +332,21 @@ func scancel(ctr arvados.Container) {
        }
 }
 
+func scontrolUpdate(ctr arvados.Container) {
+       sqCheck.L.Lock()
+       cmd := scontrolCmd(ctr)
+       msg, err := cmd.CombinedOutput()
+       sqCheck.L.Unlock()
+
+       if err != nil {
+               log.Printf("%q %q: %s %q", cmd.Path, cmd.Args, err, msg)
+               time.Sleep(time.Second)
+       } else if sqCheck.HasUUID(ctr.UUID) {
+               log.Printf("Container %s priority is now %v, niceness is now %v",
+                       ctr.UUID, ctr.Priority, sqCheck.GetNiceness(ctr.UUID))
+       }
+}
+
 func readConfig(dst interface{}, path string) error {
        err := config.LoadFile(dst, path)
        if err != nil && os.IsNotExist(err) && path == defaultConfigPath {