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3368 – JOBS STAYING IN PD WITH REASON BEGINTIME Immediately after node state to down job is requeued due to failure on compute1 slurmctld: requeue job 13 due to failure of node compute1 7. Job 13 could start in node compute2 but it remains PD with reason BeginTime 8. Eventually (after 1m41s), job starts R on node compute2 But they don't get stuck in PD (BeginTime) forever. 5382 – REQUESTED PARTITION CONFIGURATION NOT AVAILABLE NOW Hi Sebastien, This definitely is a duplicate of bug 5240.Historically when a job requested more memory than the configured MaxMemPer* limit, Slurm was doing automatic adjustments to try to make the job request fit the limits, including "increasing cpus_per_task and decreasing mem_per_cpu by factor of X based upon mem_per_cpu limits" or "Setting job's pn_min_cpus to Y due to memory limit" I 2718 – ERROR: FIND_NODE_RECORD: LOOKUP FAILURE FOR Tim, thanks for that. I can confirm that there are no slurmd daemons on monarch.. hostname monarch ps aux | grep slurm smichnow 17063 0.0 0.0 112652 964 pts/0 S+ 16:38 0:00 grep --color=auto slurm Is there an easy way to determine the IP of 7097 – WARNING: CAN'T HONOR --NTASKS-PER-NODE SET TO HI, The following script is used to submit a job. at the beginning of the user log file the following message is printed. srun: Warning: can't honor --ntasks-per-node set to 48 which doesn't match the requested tasks 81 with the number of requested nodes 81. 3856 – PORTS THAT MUST BE OPEN ON A SUBMIT HOST'S FIREWALL? This is what we have defined in slurm.conf regarding ports: $ grep -i port /etc/slurm/slurm.conf SlurmctldPort=6817 SlurmdPort=6818 #SchedulerPort= In case the following is relevant, the size of our cluster is as follows: Our current cluster has 96 nodes, 2304 CPU cores, 8 GPUs and 4 Phi We are expanding soon to 114 nodes, 2736 CPU cores, 80 GPUs and 4 Phi I was able work SLURM WORKLOAD MANAGER Overview. Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Slurm requires no kernel modifications for its operation and is relatively self-contained. As a cluster workload manager, Slurm has three key functions. First, it allocates exclusive and/or non SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER scontrol is used to view or modify Slurm configuration including: job, job step, node, partition, reservation, and overall system configuration. Most of the commands can only be SLURM WORKLOAD MANAGER 838 – NODE CONFIGURATION DIFFERS FROM HARDWARE The only anomaly will be the slurmd message about differing configuration (e.g. "n001 slurmd : Node configuration differs from hardware: CPUs=64:64 (hw) Boards=1:1 (hw) SocketsPerBoard=4:8 (hw) CoresPerSocket=16:8 (hw) ThreadsPerCore=1:1 (hw)"). Also note the slurmd command has an "-C" option to report the hardware that it foundon the
3368 – JOBS STAYING IN PD WITH REASON BEGINTIME Immediately after node state to down job is requeued due to failure on compute1 slurmctld: requeue job 13 due to failure of node compute1 7. Job 13 could start in node compute2 but it remains PD with reason BeginTime 8. Eventually (after 1m41s), job starts R on node compute2 But they don't get stuck in PD (BeginTime) forever. 5382 – REQUESTED PARTITION CONFIGURATION NOT AVAILABLE NOW Hi Sebastien, This definitely is a duplicate of bug 5240.Historically when a job requested more memory than the configured MaxMemPer* limit, Slurm was doing automatic adjustments to try to make the job request fit the limits, including "increasing cpus_per_task and decreasing mem_per_cpu by factor of X based upon mem_per_cpu limits" or "Setting job's pn_min_cpus to Y due to memory limit" I 2718 – ERROR: FIND_NODE_RECORD: LOOKUP FAILURE FOR Tim, thanks for that. I can confirm that there are no slurmd daemons on monarch.. hostname monarch ps aux | grep slurm smichnow 17063 0.0 0.0 112652 964 pts/0 S+ 16:38 0:00 grep --color=auto slurm Is there an easy way to determine the IP of 7097 – WARNING: CAN'T HONOR --NTASKS-PER-NODE SET TO HI, The following script is used to submit a job. at the beginning of the user log file the following message is printed. srun: Warning: can't honor --ntasks-per-node set to 48 which doesn't match the requested tasks 81 with the number of requested nodes 81. 3856 – PORTS THAT MUST BE OPEN ON A SUBMIT HOST'S FIREWALL? This is what we have defined in slurm.conf regarding ports: $ grep -i port /etc/slurm/slurm.conf SlurmctldPort=6817 SlurmdPort=6818 #SchedulerPort= In case the following is relevant, the size of our cluster is as follows: Our current cluster has 96 nodes, 2304 CPU cores, 8 GPUs and 4 Phi We are expanding soon to 114 nodes, 2736 CPU cores, 80 GPUs and 4 Phi I was able work SCHEDMD | SLURM SUPPORT AND DEVELOPMENT SchedMD distributes and maintains the canonical version of Slurm as well as providing Slurm support, development, training, installation, and configuration. Slurm is a highly configurable open-source workload manager. Use of optional plugins provides the functionality needed to satisfy the needs of demanding HPC centers. More complex SLURM WORKLOAD MANAGER Overview. Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Slurm requires no kernel modifications for its operation and is relatively self-contained. As a cluster workload manager, Slurm has three key functions. First, it allocates exclusive and/or non SLURM WORKLOAD MANAGER scontrol is used to view or modify Slurm configuration including: job, job step, node, partition, reservation, and overall system configuration. Most of the commands can only be SLURM WORKLOAD MANAGER DESCRIPTION. sacctmgr is used to view or modify Slurm account information. The account information is maintained within a database with the interface being provided by slurmdbd (Slurm Database daemon). This database can serve as a central storehouse of user and computer information for multiple computers at a single site. SLURM WORKLOAD MANAGER Note that the "mixed shared setting" configuration (row #2 above) introduces the possibility of starvation between jobs in each partition. If a set of nodes are running jobs from the OverSubscribe=NO partition, then these nodes will continue to only be available to jobs from that partition, even if jobs submitted to the OverSubscribe=FORCE partition have a higher priority. SLURM WORKLOAD MANAGER This Prolog behaviour can be changed by the PrologFlags parameter. The Epilog, on the other hand, always runs on every node of an allocation when the allocation is released. Prolog and Epilog scripts should be designed to be as short as possible and should not call Slurm commands (e.g. squeue, scontrol, sacctmgr, etc). SLURM WORKLOAD MANAGER pam_slurm_adopt. The purpose of this module is to prevent users from sshing into nodes that they do not have a running job on, and to track the ssh connection and any other spawned processes for accounting and to ensure complete job cleanup when the job is completed. 2503 – CLUSTER DATABASE ARCHIVE AND PURGE ERROR MESSAGES SchedMD - Slurm development and support. Providing support for some of the largest clusters in the world. 5262 – SERVER DRAINS AFTER KILL TASK FAILED Unkillable step timeout is the default: scontrol show config | grep kill UnkillableStepProgram = (null) UnkillableStepTimeout = 60 sec The user says they submit the job but it just sits in the queue and does nothing. They then cancel it. We then see the kill task failed and the drain state. And the log data always seems to show the problem 8380 – NODE LOSES COMMUNICATION DURING JOB Created attachment 12812 slurmctld log I'm prototyping a slurm cluster using the elastic computing functionality and running into a communications problem. What happens, in brief, is: - Create a cluster with 2 normal nodes and 2 State=CLOUD nodes. The normal ones are excluded from powersaving - Run a 4x node job (this is Job 2 in logsbelow).
SLURM WORKLOAD MANAGER Overview. Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Slurm requires no kernel modifications for its operation and is relatively self-contained. As a cluster workload manager, Slurm has three key functions. First, it allocates exclusive and/or non SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER scontrol is used to view or modify Slurm configuration including: job, job step, node, partition, reservation, and overall system configuration. Most of the commands can only be SLURM WORKLOAD MANAGER 838 – NODE CONFIGURATION DIFFERS FROM HARDWARE The only anomaly will be the slurmd message about differing configuration (e.g. "n001 slurmd : Node configuration differs from hardware: CPUs=64:64 (hw) Boards=1:1 (hw) SocketsPerBoard=4:8 (hw) CoresPerSocket=16:8 (hw) ThreadsPerCore=1:1 (hw)"). Also note the slurmd command has an "-C" option to report the hardware that it foundon the
3368 – JOBS STAYING IN PD WITH REASON BEGINTIME Immediately after node state to down job is requeued due to failure on compute1 slurmctld: requeue job 13 due to failure of node compute1 7. Job 13 could start in node compute2 but it remains PD with reason BeginTime 8. Eventually (after 1m41s), job starts R on node compute2 But they don't get stuck in PD (BeginTime) forever. 5382 – REQUESTED PARTITION CONFIGURATION NOT AVAILABLE NOW Hi Sebastien, This definitely is a duplicate of bug 5240.Historically when a job requested more memory than the configured MaxMemPer* limit, Slurm was doing automatic adjustments to try to make the job request fit the limits, including "increasing cpus_per_task and decreasing mem_per_cpu by factor of X based upon mem_per_cpu limits" or "Setting job's pn_min_cpus to Y due to memory limit" I 2718 – ERROR: FIND_NODE_RECORD: LOOKUP FAILURE FOR Tim, thanks for that. I can confirm that there are no slurmd daemons on monarch.. hostname monarch ps aux | grep slurm smichnow 17063 0.0 0.0 112652 964 pts/0 S+ 16:38 0:00 grep --color=auto slurm Is there an easy way to determine the IP of 7097 – WARNING: CAN'T HONOR --NTASKS-PER-NODE SET TO HI, The following script is used to submit a job. at the beginning of the user log file the following message is printed. srun: Warning: can't honor --ntasks-per-node set to 48 which doesn't match the requested tasks 81 with the number of requested nodes 81. 3856 – PORTS THAT MUST BE OPEN ON A SUBMIT HOST'S FIREWALL? This is what we have defined in slurm.conf regarding ports: $ grep -i port /etc/slurm/slurm.conf SlurmctldPort=6817 SlurmdPort=6818 #SchedulerPort= In case the following is relevant, the size of our cluster is as follows: Our current cluster has 96 nodes, 2304 CPU cores, 8 GPUs and 4 Phi We are expanding soon to 114 nodes, 2736 CPU cores, 80 GPUs and 4 Phi I was able work SLURM WORKLOAD MANAGER Overview. Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Slurm requires no kernel modifications for its operation and is relatively self-contained. As a cluster workload manager, Slurm has three key functions. First, it allocates exclusive and/or non SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER scontrol is used to view or modify Slurm configuration including: job, job step, node, partition, reservation, and overall system configuration. Most of the commands can only be SLURM WORKLOAD MANAGER 838 – NODE CONFIGURATION DIFFERS FROM HARDWARE The only anomaly will be the slurmd message about differing configuration (e.g. "n001 slurmd : Node configuration differs from hardware: CPUs=64:64 (hw) Boards=1:1 (hw) SocketsPerBoard=4:8 (hw) CoresPerSocket=16:8 (hw) ThreadsPerCore=1:1 (hw)"). Also note the slurmd command has an "-C" option to report the hardware that it foundon the
3368 – JOBS STAYING IN PD WITH REASON BEGINTIME Immediately after node state to down job is requeued due to failure on compute1 slurmctld: requeue job 13 due to failure of node compute1 7. Job 13 could start in node compute2 but it remains PD with reason BeginTime 8. Eventually (after 1m41s), job starts R on node compute2 But they don't get stuck in PD (BeginTime) forever. 5382 – REQUESTED PARTITION CONFIGURATION NOT AVAILABLE NOW Hi Sebastien, This definitely is a duplicate of bug 5240.Historically when a job requested more memory than the configured MaxMemPer* limit, Slurm was doing automatic adjustments to try to make the job request fit the limits, including "increasing cpus_per_task and decreasing mem_per_cpu by factor of X based upon mem_per_cpu limits" or "Setting job's pn_min_cpus to Y due to memory limit" I 2718 – ERROR: FIND_NODE_RECORD: LOOKUP FAILURE FOR Tim, thanks for that. I can confirm that there are no slurmd daemons on monarch.. hostname monarch ps aux | grep slurm smichnow 17063 0.0 0.0 112652 964 pts/0 S+ 16:38 0:00 grep --color=auto slurm Is there an easy way to determine the IP of 7097 – WARNING: CAN'T HONOR --NTASKS-PER-NODE SET TO HI, The following script is used to submit a job. at the beginning of the user log file the following message is printed. srun: Warning: can't honor --ntasks-per-node set to 48 which doesn't match the requested tasks 81 with the number of requested nodes 81. 3856 – PORTS THAT MUST BE OPEN ON A SUBMIT HOST'S FIREWALL? This is what we have defined in slurm.conf regarding ports: $ grep -i port /etc/slurm/slurm.conf SlurmctldPort=6817 SlurmdPort=6818 #SchedulerPort= In case the following is relevant, the size of our cluster is as follows: Our current cluster has 96 nodes, 2304 CPU cores, 8 GPUs and 4 Phi We are expanding soon to 114 nodes, 2736 CPU cores, 80 GPUs and 4 Phi I was able work SCHEDMD | SLURM SUPPORT AND DEVELOPMENT SchedMD distributes and maintains the canonical version of Slurm as well as providing Slurm support, development, training, installation, and configuration. Slurm is a highly configurable open-source workload manager. Use of optional plugins provides the functionality needed to satisfy the needs of demanding HPC centers. More complex SLURM WORKLOAD MANAGER Overview. Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Slurm requires no kernel modifications for its operation and is relatively self-contained. As a cluster workload manager, Slurm has three key functions. First, it allocates exclusive and/or non SLURM WORKLOAD MANAGER scontrol is used to view or modify Slurm configuration including: job, job step, node, partition, reservation, and overall system configuration. Most of the commands can only be SLURM WORKLOAD MANAGER DESCRIPTION. sacctmgr is used to view or modify Slurm account information. The account information is maintained within a database with the interface being provided by slurmdbd (Slurm Database daemon). This database can serve as a central storehouse of user and computer information for multiple computers at a single site. SLURM WORKLOAD MANAGER Note that the "mixed shared setting" configuration (row #2 above) introduces the possibility of starvation between jobs in each partition. If a set of nodes are running jobs from the OverSubscribe=NO partition, then these nodes will continue to only be available to jobs from that partition, even if jobs submitted to the OverSubscribe=FORCE partition have a higher priority. SLURM WORKLOAD MANAGER This Prolog behaviour can be changed by the PrologFlags parameter. The Epilog, on the other hand, always runs on every node of an allocation when the allocation is released. Prolog and Epilog scripts should be designed to be as short as possible and should not call Slurm commands (e.g. squeue, scontrol, sacctmgr, etc). SLURM WORKLOAD MANAGER pam_slurm_adopt. The purpose of this module is to prevent users from sshing into nodes that they do not have a running job on, and to track the ssh connection and any other spawned processes for accounting and to ensure complete job cleanup when the job is completed. 2503 – CLUSTER DATABASE ARCHIVE AND PURGE ERROR MESSAGES SchedMD - Slurm development and support. Providing support for some of the largest clusters in the world. 5262 – SERVER DRAINS AFTER KILL TASK FAILED Unkillable step timeout is the default: scontrol show config | grep kill UnkillableStepProgram = (null) UnkillableStepTimeout = 60 sec The user says they submit the job but it just sits in the queue and does nothing. They then cancel it. We then see the kill task failed and the drain state. And the log data always seems to show the problem 8380 – NODE LOSES COMMUNICATION DURING JOB Created attachment 12812 slurmctld log I'm prototyping a slurm cluster using the elastic computing functionality and running into a communications problem. What happens, in brief, is: - Create a cluster with 2 normal nodes and 2 State=CLOUD nodes. The normal ones are excluded from powersaving - Run a 4x node job (this is Job 2 in logsbelow).
SLURM WORKLOAD MANAGER Overview. Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Slurm requires no kernel modifications for its operation and is relatively self-contained. As a cluster workload manager, Slurm has three key functions. First, it allocates exclusive and/or non SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER scontrol is used to view or modify Slurm configuration including: job, job step, node, partition, reservation, and overall system configuration. Most of the commands can only be SLURM WORKLOAD MANAGER 838 – NODE CONFIGURATION DIFFERS FROM HARDWARE The only anomaly will be the slurmd message about differing configuration (e.g. "n001 slurmd : Node configuration differs from hardware: CPUs=64:64 (hw) Boards=1:1 (hw) SocketsPerBoard=4:8 (hw) CoresPerSocket=16:8 (hw) ThreadsPerCore=1:1 (hw)"). Also note the slurmd command has an "-C" option to report the hardware that it foundon the
3368 – JOBS STAYING IN PD WITH REASON BEGINTIME Immediately after node state to down job is requeued due to failure on compute1 slurmctld: requeue job 13 due to failure of node compute1 7. Job 13 could start in node compute2 but it remains PD with reason BeginTime 8. Eventually (after 1m41s), job starts R on node compute2 But they don't get stuck in PD (BeginTime) forever. 5382 – REQUESTED PARTITION CONFIGURATION NOT AVAILABLE NOW Hi Sebastien, This definitely is a duplicate of bug 5240.Historically when a job requested more memory than the configured MaxMemPer* limit, Slurm was doing automatic adjustments to try to make the job request fit the limits, including "increasing cpus_per_task and decreasing mem_per_cpu by factor of X based upon mem_per_cpu limits" or "Setting job's pn_min_cpus to Y due to memory limit" I 2718 – ERROR: FIND_NODE_RECORD: LOOKUP FAILURE FOR Tim, thanks for that. I can confirm that there are no slurmd daemons on monarch.. hostname monarch ps aux | grep slurm smichnow 17063 0.0 0.0 112652 964 pts/0 S+ 16:38 0:00 grep --color=auto slurm Is there an easy way to determine the IP of 7097 – WARNING: CAN'T HONOR --NTASKS-PER-NODE SET TO HI, The following script is used to submit a job. at the beginning of the user log file the following message is printed. srun: Warning: can't honor --ntasks-per-node set to 48 which doesn't match the requested tasks 81 with the number of requested nodes 81. 3856 – PORTS THAT MUST BE OPEN ON A SUBMIT HOST'S FIREWALL? This is what we have defined in slurm.conf regarding ports: $ grep -i port /etc/slurm/slurm.conf SlurmctldPort=6817 SlurmdPort=6818 #SchedulerPort= In case the following is relevant, the size of our cluster is as follows: Our current cluster has 96 nodes, 2304 CPU cores, 8 GPUs and 4 Phi We are expanding soon to 114 nodes, 2736 CPU cores, 80 GPUs and 4 Phi I was able work SLURM WORKLOAD MANAGER Overview. Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Slurm requires no kernel modifications for its operation and is relatively self-contained. As a cluster workload manager, Slurm has three key functions. First, it allocates exclusive and/or non SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER scontrol is used to view or modify Slurm configuration including: job, job step, node, partition, reservation, and overall system configuration. Most of the commands can only be SLURM WORKLOAD MANAGER 838 – NODE CONFIGURATION DIFFERS FROM HARDWARE The only anomaly will be the slurmd message about differing configuration (e.g. "n001 slurmd : Node configuration differs from hardware: CPUs=64:64 (hw) Boards=1:1 (hw) SocketsPerBoard=4:8 (hw) CoresPerSocket=16:8 (hw) ThreadsPerCore=1:1 (hw)"). Also note the slurmd command has an "-C" option to report the hardware that it foundon the
3368 – JOBS STAYING IN PD WITH REASON BEGINTIME Immediately after node state to down job is requeued due to failure on compute1 slurmctld: requeue job 13 due to failure of node compute1 7. Job 13 could start in node compute2 but it remains PD with reason BeginTime 8. Eventually (after 1m41s), job starts R on node compute2 But they don't get stuck in PD (BeginTime) forever. 5382 – REQUESTED PARTITION CONFIGURATION NOT AVAILABLE NOW Hi Sebastien, This definitely is a duplicate of bug 5240.Historically when a job requested more memory than the configured MaxMemPer* limit, Slurm was doing automatic adjustments to try to make the job request fit the limits, including "increasing cpus_per_task and decreasing mem_per_cpu by factor of X based upon mem_per_cpu limits" or "Setting job's pn_min_cpus to Y due to memory limit" I 2718 – ERROR: FIND_NODE_RECORD: LOOKUP FAILURE FOR Tim, thanks for that. I can confirm that there are no slurmd daemons on monarch.. hostname monarch ps aux | grep slurm smichnow 17063 0.0 0.0 112652 964 pts/0 S+ 16:38 0:00 grep --color=auto slurm Is there an easy way to determine the IP of 7097 – WARNING: CAN'T HONOR --NTASKS-PER-NODE SET TO HI, The following script is used to submit a job. at the beginning of the user log file the following message is printed. srun: Warning: can't honor --ntasks-per-node set to 48 which doesn't match the requested tasks 81 with the number of requested nodes 81. 3856 – PORTS THAT MUST BE OPEN ON A SUBMIT HOST'S FIREWALL? This is what we have defined in slurm.conf regarding ports: $ grep -i port /etc/slurm/slurm.conf SlurmctldPort=6817 SlurmdPort=6818 #SchedulerPort= In case the following is relevant, the size of our cluster is as follows: Our current cluster has 96 nodes, 2304 CPU cores, 8 GPUs and 4 Phi We are expanding soon to 114 nodes, 2736 CPU cores, 80 GPUs and 4 Phi I was able work SCHEDMD | SLURM SUPPORT AND DEVELOPMENT SchedMD distributes and maintains the canonical version of Slurm as well as providing Slurm support, development, training, installation, and configuration. Slurm is a highly configurable open-source workload manager. Use of optional plugins provides the functionality needed to satisfy the needs of demanding HPC centers. More complex SLURM WORKLOAD MANAGER Overview. Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Slurm requires no kernel modifications for its operation and is relatively self-contained. As a cluster workload manager, Slurm has three key functions. First, it allocates exclusive and/or non SLURM WORKLOAD MANAGER scontrol is used to view or modify Slurm configuration including: job, job step, node, partition, reservation, and overall system configuration. Most of the commands can only be SLURM WORKLOAD MANAGER DESCRIPTION. sacctmgr is used to view or modify Slurm account information. The account information is maintained within a database with the interface being provided by slurmdbd (Slurm Database daemon). This database can serve as a central storehouse of user and computer information for multiple computers at a single site. SLURM WORKLOAD MANAGER Note that the "mixed shared setting" configuration (row #2 above) introduces the possibility of starvation between jobs in each partition. If a set of nodes are running jobs from the OverSubscribe=NO partition, then these nodes will continue to only be available to jobs from that partition, even if jobs submitted to the OverSubscribe=FORCE partition have a higher priority. SLURM WORKLOAD MANAGER This Prolog behaviour can be changed by the PrologFlags parameter. The Epilog, on the other hand, always runs on every node of an allocation when the allocation is released. Prolog and Epilog scripts should be designed to be as short as possible and should not call Slurm commands (e.g. squeue, scontrol, sacctmgr, etc). SLURM WORKLOAD MANAGER pam_slurm_adopt. The purpose of this module is to prevent users from sshing into nodes that they do not have a running job on, and to track the ssh connection and any other spawned processes for accounting and to ensure complete job cleanup when the job is completed. 2503 – CLUSTER DATABASE ARCHIVE AND PURGE ERROR MESSAGES SchedMD - Slurm development and support. Providing support for some of the largest clusters in the world. 5262 – SERVER DRAINS AFTER KILL TASK FAILED Unkillable step timeout is the default: scontrol show config | grep kill UnkillableStepProgram = (null) UnkillableStepTimeout = 60 sec The user says they submit the job but it just sits in the queue and does nothing. They then cancel it. We then see the kill task failed and the drain state. And the log data always seems to show the problem 8380 – NODE LOSES COMMUNICATION DURING JOB Created attachment 12812 slurmctld log I'm prototyping a slurm cluster using the elastic computing functionality and running into a communications problem. What happens, in brief, is: - Create a cluster with 2 normal nodes and 2 State=CLOUD nodes. The normal ones are excluded from powersaving - Run a 4x node job (this is Job 2 in logsbelow).
SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER 3368 – JOBS STAYING IN PD WITH REASON BEGINTIME Immediately after node state to down job is requeued due to failure on compute1 slurmctld: requeue job 13 due to failure of node compute1 7. Job 13 could start in node compute2 but it remains PD with reason BeginTime 8. Eventually (after 1m41s), job starts R on node compute2 But they don't get stuck in PD (BeginTime) forever. 838 – NODE CONFIGURATION DIFFERS FROM HARDWARE We have a bunch of 64-core (quad-socket, 16 cores/socket) AMD servers and some of them are reporting the following error: May 27 11:53:04 n001 slurmd: Node configuration differs from hardware: CPUs=64:64(hw) Boards=1:1(hw) SocketsPerBoard=4:8(hw) CoresPerSocket=16:8(hw) ThreadsPerCore=1:1(hw) All nodes have the exact same CPUs, motherboards and OS (PXE booted 5382 – REQUESTED PARTITION CONFIGURATION NOT AVAILABLE NOW Hi Sebastien, This definitely is a duplicate of bug 5240.Historically when a job requested more memory than the configured MaxMemPer* limit, Slurm was doing automatic adjustments to try to make the job request fit the limits, including "increasing cpus_per_task and decreasing mem_per_cpu by factor of X based upon mem_per_cpu limits" or "Setting job's pn_min_cpus to Y due to memory limit" I 3701 – NEW SLURM CLUSTER Apr 16 16:02:19 amber301 slurmd : error: You are using cons_res or gang scheduling with Fastschedule=0 and node configuration differs from hardware. The node configuration used will be what is in the slurm.conf because of the bitmaps the slurmctld must create before the slurmd registers.#012 CPUs=24:48 (hw) Boards=1:1 (hw) SocketsPerBoard 7097 – WARNING: CAN'T HONOR --NTASKS-PER-NODE SET TO HI, The following script is used to submit a job. at the beginning of the user log file the following message is printed. srun: Warning: can't honor --ntasks-per-node set to 48 which doesn't match the requested tasks 81 with the number of requested nodes 81. 3856 – PORTS THAT MUST BE OPEN ON A SUBMIT HOST'S FIREWALL? This is what we have defined in slurm.conf regarding ports: $ grep -i port /etc/slurm/slurm.conf SlurmctldPort=6817 SlurmdPort=6818 #SchedulerPort= In case the following is relevant, the size of our cluster is as follows: Our current cluster has 96 nodes, 2304 CPU cores, 8 GPUs and 4 Phi We are expanding soon to 114 nodes, 2736 CPU cores, 80 GPUs and 4 Phi I was able work 1400 – "NO NETWORK ADDRESS FOUND" MEANING Hi, this happens when slurmctld fails to resolve the network address of the slurmd based on the hostname as configured in slurm.conf, essentially gethostbyname() fails. SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER 3368 – JOBS STAYING IN PD WITH REASON BEGINTIME Immediately after node state to down job is requeued due to failure on compute1 slurmctld: requeue job 13 due to failure of node compute1 7. Job 13 could start in node compute2 but it remains PD with reason BeginTime 8. Eventually (after 1m41s), job starts R on node compute2 But they don't get stuck in PD (BeginTime) forever. 838 – NODE CONFIGURATION DIFFERS FROM HARDWARE We have a bunch of 64-core (quad-socket, 16 cores/socket) AMD servers and some of them are reporting the following error: May 27 11:53:04 n001 slurmd: Node configuration differs from hardware: CPUs=64:64(hw) Boards=1:1(hw) SocketsPerBoard=4:8(hw) CoresPerSocket=16:8(hw) ThreadsPerCore=1:1(hw) All nodes have the exact same CPUs, motherboards and OS (PXE booted 5382 – REQUESTED PARTITION CONFIGURATION NOT AVAILABLE NOW Hi Sebastien, This definitely is a duplicate of bug 5240.Historically when a job requested more memory than the configured MaxMemPer* limit, Slurm was doing automatic adjustments to try to make the job request fit the limits, including "increasing cpus_per_task and decreasing mem_per_cpu by factor of X based upon mem_per_cpu limits" or "Setting job's pn_min_cpus to Y due to memory limit" I 3701 – NEW SLURM CLUSTER Apr 16 16:02:19 amber301 slurmd : error: You are using cons_res or gang scheduling with Fastschedule=0 and node configuration differs from hardware. The node configuration used will be what is in the slurm.conf because of the bitmaps the slurmctld must create before the slurmd registers.#012 CPUs=24:48 (hw) Boards=1:1 (hw) SocketsPerBoard 7097 – WARNING: CAN'T HONOR --NTASKS-PER-NODE SET TO HI, The following script is used to submit a job. at the beginning of the user log file the following message is printed. srun: Warning: can't honor --ntasks-per-node set to 48 which doesn't match the requested tasks 81 with the number of requested nodes 81. 3856 – PORTS THAT MUST BE OPEN ON A SUBMIT HOST'S FIREWALL? This is what we have defined in slurm.conf regarding ports: $ grep -i port /etc/slurm/slurm.conf SlurmctldPort=6817 SlurmdPort=6818 #SchedulerPort= In case the following is relevant, the size of our cluster is as follows: Our current cluster has 96 nodes, 2304 CPU cores, 8 GPUs and 4 Phi We are expanding soon to 114 nodes, 2736 CPU cores, 80 GPUs and 4 Phi I was able work 1400 – "NO NETWORK ADDRESS FOUND" MEANING Hi, this happens when slurmctld fails to resolve the network address of the slurmd based on the hostname as configured in slurm.conf, essentially gethostbyname() fails.DOWNLOADS | SCHEDMD
Downloads Download the latest stable version of Slurm® slurm-20.11.7.tar.bz2 md5: 0f5c768d3e895030f286120c3591912f sha1: a5212eed09c4cb164b5c9b6c76e13c7bbec798d1 SLURM WORKLOAD MANAGER Overview. Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Slurm requires no kernel modifications for its operation and is relatively self-contained. As a cluster workload manager, Slurm has three key functions. First, it allocates exclusive and/or non SLURM WORKLOAD MANAGER Slurm allows container developers to create SPANK Plugins that can be called at various points of job execution to support containers. Slurm is generally agnostic to containers and can be made to start most, if not all, types. Links to several container varieties are provided below: Charliecloud. Docker. UDOCKER. SLURM WORKLOAD MANAGER DESCRIPTION. sacctmgr is used to view or modify Slurm account information. The account information is maintained within a database with the interface being provided by slurmdbd (Slurm Database daemon). This database can serve as a central storehouse of user and computer information for multiple computers at a single site. SLURM WORKLOAD MANAGER pam_slurm_adopt. The purpose of this module is to prevent users from sshing into nodes that they do not have a running job on, and to track the ssh connection and any other spawned processes for accounting and to ensure complete job cleanup when the job is completed. SLURM WORKLOAD MANAGER The first step of the process is to create a job allocation, which is a claim on compute resources. A job allocation can be created using the salloc, sbatch or srun command. The salloc and sbatch commands create resource allocations while the srun command will create a resource allocation (if not already running within one) plus launchtasks.
2503 – CLUSTER DATABASE ARCHIVE AND PURGE ERROR MESSAGES SchedMD - Slurm development and support. Providing support for some of the largest clusters in the world. 5262 – SERVER DRAINS AFTER KILL TASK FAILED Unkillable step timeout is the default: scontrol show config | grep kill UnkillableStepProgram = (null) UnkillableStepTimeout = 60 sec The user says they submit the job but it just sits in the queue and does nothing. They then cancel it. We then see the kill task failed and the drain state. And the log data always seems to show the problem 8380 – NODE LOSES COMMUNICATION DURING JOB Created attachment 12812 slurmctld log I'm prototyping a slurm cluster using the elastic computing functionality and running into a communications problem. What happens, in brief, is: - Create a cluster with 2 normal nodes and 2 State=CLOUD nodes. The normal ones are excluded from powersaving - Run a 4x node job (this is Job 2 in logsbelow).
2718 – ERROR: FIND_NODE_RECORD: LOOKUP FAILURE FOR Tim, thanks for that. I can confirm that there are no slurmd daemons on monarch.. hostname monarch ps aux | grep slurm smichnow 17063 0.0 0.0 112652 964 pts/0 S+ 16:38 0:00 grep --color=auto slurm Is there an easy way to determine the IP of SCHEDMD | SLURM SUPPORT AND DEVELOPMENTHOMESERVICESDOWNLOADSSLURM DOCUMENTATIONCOMMERCIAL SUPPORTNEWS SchedMD distributes and maintains the canonical version of Slurm as well as providing Slurm support, development, training, installation, and configuration. Slurm is a highly configurable open-source workload manager. Use of optional plugins provides the functionality needed to satisfy the needs of demanding HPC centers. More complexDOWNLOADS | SCHEDMD
Downloads Download the latest stable version of Slurm® slurm-20.11.7.tar.bz2 md5: 0f5c768d3e895030f286120c3591912f sha1: a5212eed09c4cb164b5c9b6c76e13c7bbec798d1 SLURM WORKLOAD MANAGER Overview. Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Slurm requires no kernel modifications for its operation and is relatively self-contained. As a cluster workload manager, Slurm has three key functions. First, it allocates exclusive and/or non SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER The first step of the process is to create a job allocation, which is a claim on compute resources. A job allocation can be created using the salloc, sbatch or srun command. The salloc and sbatch commands create resource allocations while the srun command will create a resource allocation (if not already running within one) plus launchtasks.
3368 – JOBS STAYING IN PD WITH REASON BEGINTIME Immediately after node state to down job is requeued due to failure on compute1 slurmctld: requeue job 13 due to failure of node compute1 7. Job 13 could start in node compute2 but it remains PD with reason BeginTime 8. Eventually (after 1m41s), job starts R on node compute2 But they don't get stuck in PD (BeginTime) forever. 838 – NODE CONFIGURATION DIFFERS FROM HARDWARE The only anomaly will be the slurmd message about differing configuration (e.g. "n001 slurmd : Node configuration differs from hardware: CPUs=64:64 (hw) Boards=1:1 (hw) SocketsPerBoard=4:8 (hw) CoresPerSocket=16:8 (hw) ThreadsPerCore=1:1 (hw)"). Also note the slurmd command has an "-C" option to report the hardware that it foundon the
3856 – PORTS THAT MUST BE OPEN ON A SUBMIT HOST'S FIREWALL? This is what we have defined in slurm.conf regarding ports: $ grep -i port /etc/slurm/slurm.conf SlurmctldPort=6817 SlurmdPort=6818 #SchedulerPort= In case the following is relevant, the size of our cluster is as follows: Our current cluster has 96 nodes, 2304 CPU cores, 8 GPUs and 4 Phi We are expanding soon to 114 nodes, 2736 CPU cores, 80 GPUs and 4 Phi I was able work 1400 – "NO NETWORK ADDRESS FOUND" MEANING Hi, this happens when slurmctld fails to resolve the network address of the slurmd based on the hostname as configured in slurm.conf, essentially gethostbyname() fails. SCHEDMD | SLURM SUPPORT AND DEVELOPMENTHOMESERVICESDOWNLOADSSLURM DOCUMENTATIONCOMMERCIAL SUPPORTNEWS SchedMD distributes and maintains the canonical version of Slurm as well as providing Slurm support, development, training, installation, and configuration. Slurm is a highly configurable open-source workload manager. Use of optional plugins provides the functionality needed to satisfy the needs of demanding HPC centers. More complexDOWNLOADS | SCHEDMD
Downloads Download the latest stable version of Slurm® slurm-20.11.7.tar.bz2 md5: 0f5c768d3e895030f286120c3591912f sha1: a5212eed09c4cb164b5c9b6c76e13c7bbec798d1 SLURM WORKLOAD MANAGER Overview. Slurm is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for large and small Linux clusters. Slurm requires no kernel modifications for its operation and is relatively self-contained. As a cluster workload manager, Slurm has three key functions. First, it allocates exclusive and/or non SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER SLURM WORKLOAD MANAGER The first step of the process is to create a job allocation, which is a claim on compute resources. A job allocation can be created using the salloc, sbatch or srun command. The salloc and sbatch commands create resource allocations while the srun command will create a resource allocation (if not already running within one) plus launchtasks.
3368 – JOBS STAYING IN PD WITH REASON BEGINTIME Immediately after node state to down job is requeued due to failure on compute1 slurmctld: requeue job 13 due to failure of node compute1 7. Job 13 could start in node compute2 but it remains PD with reason BeginTime 8. Eventually (after 1m41s), job starts R on node compute2 But they don't get stuck in PD (BeginTime) forever. 838 – NODE CONFIGURATION DIFFERS FROM HARDWARE The only anomaly will be the slurmd message about differing configuration (e.g. "n001 slurmd : Node configuration differs from hardware: CPUs=64:64 (hw) Boards=1:1 (hw) SocketsPerBoard=4:8 (hw) CoresPerSocket=16:8 (hw) ThreadsPerCore=1:1 (hw)"). Also note the slurmd command has an "-C" option to report the hardware that it foundon the
3856 – PORTS THAT MUST BE OPEN ON A SUBMIT HOST'S FIREWALL? This is what we have defined in slurm.conf regarding ports: $ grep -i port /etc/slurm/slurm.conf SlurmctldPort=6817 SlurmdPort=6818 #SchedulerPort= In case the following is relevant, the size of our cluster is as follows: Our current cluster has 96 nodes, 2304 CPU cores, 8 GPUs and 4 Phi We are expanding soon to 114 nodes, 2736 CPU cores, 80 GPUs and 4 Phi I was able work 1400 – "NO NETWORK ADDRESS FOUND" MEANING Hi, this happens when slurmctld fails to resolve the network address of the slurmd based on the hostname as configured in slurm.conf, essentially gethostbyname() fails. SLURM SYSTEM CONFIGURATION TOOL The full version of the Slurm configuration tool is available at configurator.html. This tool supports Slurm version 20.11 only. Configuration files for other versions of Slurm should be built using the tool distributed with it in doc/html/configurator.html . Some parameters will be set to default values, but you can manually editthe resulting
SLURM WORKLOAD MANAGER Documentation. NOTE: This documentation is for Slurm version 20.11. Documentation for older versions of Slurm are distributed with the source, or may be found in the archive . Also see Tutorials and Publications and Presentations. SLURM WORKLOAD MANAGER scontrol is used to view or modify Slurm configuration including: job, job step, node, partition, reservation, and overall system configuration. Most of the commands can only be SLURM WORKLOAD MANAGER Release Notes. The following are the contents of the RELEASE_NOTES file as distributed with the Slurm source code for this release. Please refer to the NEWS include alongside the source as well for more detailed descriptions of the associated changes, and for bugs fixed within each maintenance release. SLURM WORKLOAD MANAGER Slurm REST API. Slurm provides a REST API daemon named slurmrestd. This daemon is designed to allow clients to communicate with Slurm via a REST API (in addition to the command line interface (CLI) or C API). SLURM WORKLOAD MANAGER All consumable resources can be shared. One node could have 2 jobs running on it, and each job could be from a different partition. Two partitions assigned the same set of nodes: one partition is OverSubscribe=FORCE:3, and the other is OverSubscribe=FORCE:5.Generally
SLURM WORKLOAD MANAGER Specify the information to be displayed using an sinfo format string. If the command is executed in a federated cluster environment and information about more than one cluster is to be displayed and the -h, --noheader option is used, then the cluster name will be 2718 – ERROR: FIND_NODE_RECORD: LOOKUP FAILURE FOR Tim, thanks for that. I can confirm that there are no slurmd daemons on monarch.. hostname monarch ps aux | grep slurm smichnow 17063 0.0 0.0 112652 964 pts/0 S+ 16:38 0:00 grep --color=auto slurm Is there an easy way to determine the IP of 5382 – REQUESTED PARTITION CONFIGURATION NOT AVAILABLE NOW Hi Sebastien, This definitely is a duplicate of bug 5240.Historically when a job requested more memory than the configured MaxMemPer* limit, Slurm was doing automatic adjustments to try to make the job request fit the limits, including "increasing cpus_per_task and decreasing mem_per_cpu by factor of X based upon mem_per_cpu limits" or "Setting job's pn_min_cpus to Y due to memory limit" I 6785 – X11 FORWARDING: SRUN ERROR CAUSED BY XAUTH POLL Hi Paolo - Thank you for the patch submission. This is in for 18.08.8 and above: commit 0e5768e5ed1c614559372bdaa5455738aab44cc8 Author:Paolo Margara
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