"github.com/coreos/go-systemd/daemon"
)
+const initialNiceValue int64 = 10000
+
var (
version = "dev"
defaultConfigPath = "/etc/arvados/crunch-dispatch-slurm/crunch-dispatch-slurm.yml"
SbatchArguments []string
PollPeriod arvados.Duration
+ PrioritySpread int64
// crunch-run command to invoke. The container UUID will be
// appended. If nil, []string{"crunch-run"} will be used.
disp.slurm = &slurmCLI{}
disp.sqCheck = &SqueueChecker{
- Period: time.Duration(disp.PollPeriod),
- Slurm: disp.slurm,
+ Period: time.Duration(disp.PollPeriod),
+ PrioritySpread: disp.PrioritySpread,
+ Slurm: disp.slurm,
}
disp.Dispatcher = &dispatch.Dispatcher{
Arv: arv,
}
}
-func (disp *Dispatcher) niceness(priority int) int {
- if priority > 1000 {
- priority = 1000
- }
- if priority < 0 {
- priority = 0
- }
- // Niceness range 1-10000
- return (1000 - priority) * 10
-}
-
func (disp *Dispatcher) sbatchArgs(container arvados.Container) ([]string, error) {
mem := int64(math.Ceil(float64(container.RuntimeConstraints.RAM+container.RuntimeConstraints.KeepCacheRAM+disp.ReserveExtraRAM) / float64(1048576)))
}
disk = int64(math.Ceil(float64(disk) / float64(1048576)))
- var sbatchArgs []string
- sbatchArgs = append(sbatchArgs, disp.SbatchArguments...)
- sbatchArgs = append(sbatchArgs, fmt.Sprintf("--job-name=%s", container.UUID))
- 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", disp.niceness(container.Priority)))
- if len(container.SchedulingParameters.Partitions) > 0 {
- sbatchArgs = append(sbatchArgs, fmt.Sprintf("--partition=%s", strings.Join(container.SchedulingParameters.Partitions, ",")))
- }
+ var args []string
+ args = append(args, disp.SbatchArguments...)
+ args = append(args,
+ fmt.Sprintf("--job-name=%s", container.UUID),
+ fmt.Sprintf("--nice=%d", initialNiceValue))
+ constraintArgs := []string{
+ fmt.Sprintf("--mem=%d", mem),
+ fmt.Sprintf("--cpus-per-task=%d", container.RuntimeConstraints.VCPUs),
+ fmt.Sprintf("--tmp=%d", disk),
+ }
if disp.cluster == nil {
// no instance types configured
} else if it, err := dispatchcloud.ChooseInstanceType(disp.cluster, &container); err == dispatchcloud.ErrInstanceTypesNotConfigured {
} else if err != nil {
return nil, err
} else {
- sbatchArgs = append(sbatchArgs, "--constraint=instancetype="+it.Name)
+ // use instancetype constraint instead of slurm mem/cpu/tmp specs
+ constraintArgs = []string{"--constraint=instancetype=" + it.Name}
+ }
+ args = append(args, constraintArgs...)
+
+ if len(container.SchedulingParameters.Partitions) > 0 {
+ args = append(args, fmt.Sprintf("--partition=%s", strings.Join(container.SchedulingParameters.Partitions, ",")))
}
- return sbatchArgs, nil
+ return args, nil
}
func (disp *Dispatcher) submit(container arvados.Container, crunchRunCommand []string) error {
log.Printf("container %s has state %q, priority %d: cancel slurm job", ctr.UUID, updated.State, updated.Priority)
disp.scancel(ctr)
} else {
- disp.renice(updated)
+ p := int64(updated.Priority)
+ if p <= 1000 {
+ // API is providing
+ // user-assigned priority. If
+ // ctrs have equal priority,
+ // run the older one first.
+ p = int64(p)<<50 - (updated.CreatedAt.UnixNano() >> 14)
+ }
+ disp.sqCheck.SetPriority(ctr.UUID, p)
}
}
}
}
-
func (disp *Dispatcher) scancel(ctr arvados.Container) {
disp.sqCheck.L.Lock()
err := disp.slurm.Cancel(ctr.UUID)
}
}
-func (disp *Dispatcher) renice(ctr arvados.Container) {
- nice := disp.niceness(ctr.Priority)
- oldnice := disp.sqCheck.GetNiceness(ctr.UUID)
- if nice == oldnice || oldnice == -1 {
- return
- }
- log.Printf("updating slurm nice value to %d (was %d)", nice, oldnice)
- disp.sqCheck.L.Lock()
- err := disp.slurm.Renice(ctr.UUID, nice)
- disp.sqCheck.L.Unlock()
-
- if err != nil {
- log.Printf("renice: %s", err)
- time.Sleep(time.Second)
- return
- }
- if disp.sqCheck.HasUUID(ctr.UUID) {
- log.Printf("container %s has arvados priority %d, slurm nice %d",
- ctr.UUID, ctr.Priority, disp.sqCheck.GetNiceness(ctr.UUID))
- }
-}
-
func (disp *Dispatcher) readConfig(path string) error {
err := config.LoadFile(disp, path)
if err != nil && os.IsNotExist(err) && path == defaultConfigPath {