Hello. I'm also very interested in using this RAM features of cgroups on my debian6 cluster.
I'm actually running a debian 6 stock kernel, can I use cgroups for RAM right away or should I upgrade the kernel to a more recent version? On 04/25/12 16:23, Sefa Arslan wrote: > > Hii.. > > > I am trying to use cgroup with slurm. > > I have the following lines on my /etc/slurm/cgroup.conf file: > ### > # > # Slurm cgroup support configuration file > # > # See man slurm.conf and man cgroup.conf for further > # information on cgroup configuration parameters > #-- > CgroupAutomount=yes > CgroupReleaseAgentDir="/etc/slurm/cgroup" > > ConstrainCores=yes > TaskAffinity=yes > ConstrainRAMSpace=yes > AllowedRAMSpace=10 > ConstrainSwapSpace=yes > AllowedSwapSpace=100 > MaxRAMPercent=10 > MaxSwapPercent=100 > > > > > Our nodes have 128GB ram. I am testing the configuration via xmalloc > program which takes the given parameter as MegaBytes > $>salloc -n 1 --nodelist=mercan44 > $> srun xmalloc 100000 > > According to my configuration, I hope that the program will start to use > swap space when the memory usage reaches 13GB.. (10% of 128GB) > > But program continue to use the physical memory even if it reaches 13GB.. > > What is the problem with my configuration? > > slurm configuration: > > scontrol: show config > Configuration data as of 2012-04-25T17:04:10 > AccountingStorageBackupHost = (null) > AccountingStorageEnforce = associations,limits > AccountingStorageHost = mercan5 > AccountingStorageLoc = N/A > AccountingStoragePort = 6819 > AccountingStorageType = accounting_storage/slurmdbd > AccountingStorageUser = N/A > AccountingStoreJobComment = YES > AuthType = auth/munge > BackupAddr = (null) > BackupController = (null) > BatchStartTimeout = 10 sec > BOOT_TIME = 2012-04-25T16:33:50 > CacheGroups = 1 > CheckpointType = checkpoint/none > ClusterName = linux > CompleteWait = 0 sec > ControlAddr = mercan5 > ControlMachine = mercan5 > CryptoType = crypto/munge > DebugFlags = (null) > DefMemPerNode = UNLIMITED > DisableRootJobs = NO > EnforcePartLimits = YES > Epilog = (null) > EpilogMsgTime = 2000 usec > EpilogSlurmctld = (null) > FastSchedule = 1 > FirstJobId = 100000 > GetEnvTimeout = 2 sec > GresTypes = (null) > GroupUpdateForce = 0 > GroupUpdateTime = 600 sec > HASH_VAL = Different Ours=0x8997cb77 Slurmctld=0x7742bf02 > HealthCheckInterval = 0 sec > HealthCheckProgram = (null) > InactiveLimit = 0 sec > JobAcctGatherFrequency = 30 sec > JobAcctGatherType = jobacct_gather/linux > JobCheckpointDir = /var/slurm/checkpoint > JobCompHost = localhost > JobCompLoc = /var/log/slurm/job_completions > JobCompPort = 0 > JobCompType = jobcomp/filetxt > JobCompUser = root > JobCredentialPrivateKey = (null) > JobCredentialPublicCertificate = (null) > JobFileAppend = 0 > JobRequeue = 1 > JobSubmitPlugins = (null) > KillOnBadExit = 0 > KillWait = 30 sec > Licenses = (null) > MailProg = /bin/mail > MaxJobCount = 1000000 > MaxJobId = 4294901760 > MaxMemPerNode = UNLIMITED > MaxStepCount = 40000 > MaxTasksPerNode = 128 > MessageTimeout = 10 sec > MinJobAge = 300 sec > MpiDefault = none > MpiParams = (null) > NEXT_JOB_ID = 100678 > OverTimeLimit = 0 min > PluginDir = /usr/lib64/slurm > PlugStackConfig = /etc/slurm/plugstack.conf > PreemptMode = OFF > PreemptType = preempt/none > PriorityDecayHalfLife = 00:00:00 > PriorityCalcPeriod = 00:05:00 > PriorityFavorSmall = 0 > PriorityMaxAge = 1-00:00:00 > PriorityUsageResetPeriod = NONE > PriorityType = priority/multifactor > PriorityWeightAge = 1000 > PriorityWeightFairShare = 100000 > PriorityWeightJobSize = 1000 > PriorityWeightPartition = 10000 > PriorityWeightQOS = 0 > PrivateData = none > ProctrackType = proctrack/cgroup > Prolog = (null) > PrologSlurmctld = (null) > PropagatePrioProcess = 0 > PropagateResourceLimits = ALL > PropagateResourceLimitsExcept = (null) > RebootProgram = (null) > ReconfigFlags = (null) > ResumeProgram = (null) > ResumeRate = 300 nodes/min > ResumeTimeout = 60 sec > ResvOverRun = 0 min > ReturnToService = 0 > SallocDefaultCommand = (null) > SchedulerParameters = (null) > SchedulerPort = 7321 > SchedulerRootFilter = 1 > SchedulerTimeSlice = 30 sec > SchedulerType = sched/backfill > SelectType = select/cons_res > SelectTypeParameters = CR_CORE_MEMORY > SlurmUser = root(0) > SlurmctldDebug = debug3 > SlurmctldLogFile = /var/log/slurm/slurmctld.log > SlurmSchedLogFile = (null) > SlurmctldPort = 6817 > SlurmctldTimeout = 300 sec > SlurmdDebug = debug3 > SlurmdLogFile = /var/log/slurm/slurmd.log > SlurmdPidFile = /var/run/slurmd.pid > SlurmdPort = 6818 > SlurmdSpoolDir = /tmp/slurmd > SlurmdTimeout = 300 sec > SlurmdUser = root(0) > SlurmSchedLogLevel = 0 > SlurmctldPidFile = /var/run/slurmctld.pid > SLURM_CONF = /etc/slurm/slurm.conf > SLURM_VERSION = 2.4.0-pre4 > SrunEpilog = (null) > SrunProlog = (null) > StateSaveLocation = /tmp > SuspendExcNodes = (null) > SuspendExcParts = (null) > SuspendProgram = (null) > SuspendRate = 60 nodes/min > SuspendTime = NONE > SuspendTimeout = 30 sec > SwitchType = switch/none > TaskEpilog = (null) > TaskPlugin = task/none > TaskPluginParam = (null type) > TaskProlog = (null) > TmpFS = /tmp > TopologyPlugin = topology/none > TrackWCKey = 0 > TreeWidth = 50 > UsePam = 0 > UnkillableStepProgram = (null) > UnkillableStepTimeout = 60 sec > VSizeFactor = 0 percent > WaitTime = 0 sec > > . >
