Partitions in Slurm can be considered as a resource abstraction. A partition configuration defines job limits and access controls for a group of nodes. Slurm allocates resources to a job within the selected partition by taking into consideration the job's requested resources and the partition's available resources and restrictions.
12 partitions are currently configured:
- MFCF CPU partitions
- cluster GPU partitions
- hagrid cluster partitions
- hagrid_batch : For running batch jobs on the Hagrid cluster
- hagrid_interactive : For interactive jobs on the Hagrid cluster
- barrio1 partition
- barrio1 : For running jobs on the barrio1 machine
- mosaic cluster partitions: The Mosaic cluster was purchased by two CFI projects and was originally operated by SHARCNET. The owners have contributed this cluster to MFCF for use by the Faculty of Mathematics (other than SCS). The owners and their collaborators retain higher priority for use of the cluster.
- cpu_mosaic_owner : high priority CPU jobs
- cpu_mosaic_guest : low priority CPU jobs
- gpu_k20_mosaic_owner : high priority GPU jobs
- gpu_k20_mosaic_guest : low priority GPU jobs
Details of each partition's resources are shown in tables below. Resources may be adjusted according to observed usage patterns. Also partitions' computational resources may overlap. For example, cpu_mosaic_owner and cpu_mosaic_guest share the same computation resources. They differ in job limits, access controls and job priorities.
Useful commands
- For detailed information on all partitions on a cluster
scontrol show partition - For information on specific partition
scontrol show partition <partition-name>
Partitions details
- cpu_pr1 partition: for running production jobs on hpc-pr2 cluster.
Partition name cpu_pr1 Total available memory 512 GB Max Cores 96 cores Threads per core 2 Threads Total GPU devices 0 GPU memory per device 0 GB Compute Nodes hpc-pr2-[01-08] cpu_pr1 partition resources Max runtime (h) 180 hours Max Nodes 6 Nodes cpu_pr1 partition per job resource limits
- cpu_pr3 partition: for running production jobs on hpc-pr3 cluster.
Partition name cpu_pr3 Total available memory 1024 GB Max Cores 256 cores Threads per core 2 Threads Total GPU devices 0 GPU memory per device 0 GB Compute Nodes hpc-pr3-[01-08] cpu_pr3 partition resources Max runtime (h) 180 hours Max Nodes 6 Nodes cpu_pr3 partition per job resource limits
- gpu_p100 partition: for jobs using the P100 GPUs
Partition name gpu_p100 Total available memory 44 GB Max Cores 28 cores Threads per core 2 Threads Total GPU devices 4 Tesla P100 GPU memory per device 16 GB Compute Nodes gpu-pr1-01 gpu_p100 partition resources Max runtime (h) 180 hours Max Nodes 1 Node gpu_p100 partition per job resource limits
- gpu_a100 partition: for jobs using the A100 GPUs
Partition name gpu_a100 Total available memory 1 TB Max Cores 64 cores Threads per core 1 Threads Total GPU devices 8 Tesla A100 GPU memory per device 4 GPUs with 40 GB
4 GPUs with 80 GBCompute Nodes gpu-pr1-02 gpu_a100 partition resources Max runtime (h) 180 hours Max Nodes 1 Node gpu_a100 partition per job resource limits
- hagrid_batch partition: This partition is accessible only by hagrid cluster users. If hagrid_batch partition is selected, you have to specify hagrid account using --account=hagrid option.
Partition name hagrid_batch Total available memory 1440 GB Total available cores 160 cores Threads per core 1 Threads Total GPU devices 0 Compute Nodes hagrid[01-08] hagrid_batch partition resources Max runtime (h) 200 hours Max Nodes 6 Nodes hagrid_batch partition per job resource limits
- hagrid_interactive partition: This partition is for Slurm interactive sessions and is accessible only by hagrid cluster users. Interactive jobs, or sessions, are useful for jobs that require direct user input such as code development, compiling, testing/debugging etc.
Partition name hagrid_interactive Total available memory 180 GB Total available cores 20 cores Threads per core 2 Threads Total GPU devices 0 Compute Nodes hagrid-storage hagrid_interactive partition resources Max runtime (h) 4 hours Max Nodes 1 Node hagrid_interactive partition per job resource limits
- barrio1 partition: This partition is accessible only by barrio1 cluster users. It is a single node partition. Slurm interactive session would be recommended for jobs that require direct user input such as code development, compiling, testing/debugging etc.
Partition name barrio1 AllowAccounts barrio1 Total available memory 64 GB Total available cores 8 cores Threads per core 2 Threads Total GPU devices 0 Compute Nodes barrio1.math barrio1 partition resources Max runtime (h) UNLIMITED Max Nodes 1 Node barrio1 partition per job resource limits
- mosaic cluster partitions
The Mosaic cluster consists of 20 dual-CPU machines each with one GPU device, and 4 quad-CPU machines with large memory. The machines are connected by an InfiniBand network. All non-CS Math Faculty researchers and grad students may use the cluster, but the owners and their collaborators retain higher priority.
- cpu_mosaic_owner partition: this partition is for the owners and their collaborators
Partition name cpu_mosaic_owner AllowAccounts mosaic_owners Total available memory 2304 GB Total available cores 96 cores Threads per core 1 Threads Total GPU devices 0 Compute Nodes cpu_mosaic_owner.math cpu_mosaic_owner partition resources Max runtime (day-hh:mm:ss) 7-04:00:00 Max Nodes 3 nodes cpu_mosaic_owner partition per job resource limits
- cpu_mosaic_guest partition: this partition is for users other than the owners of the Mosaic cluster
Partition name cpu_mosaic_guest AllowAccounts cpu_mosaic_guest Total available memory 2304 GB Total available cores 96 cores Threads per core 1 Threads Total GPU devices 0 Compute Nodes mosaic-[21-23] cpu_mosaic_guest partition resources Max runtime (day-hh:mm:ss) 7-04-00-00 Max Nodes 3 nodes cpu_mosaic_guest partition per job resource limits - gpu_k20_mosaic_owner partition: This partition is for the owners. Each node in this partition has one Tesla K20m GPU device. Use this partition for GPU jobs.
Partition name gpu_k20_mosaic_owner AllowAccounts gpu_k20_mosaic_owner Total available memory 4608 GB Total available cores 360 cores Threads per core 1 Threads Total GPU devices 18 Tesla Kepler Compute Nodes mosaic-[01-19] gpu_k20_mosaic_owner partition resources Max runtime (day-hh:mm:ss) 7-12:01:00 Max Nodes 9 Nodes gpu_k20_mosaic_owner partition per job resource limits - gpu_k20_mosaic_guest partition: Anyone may use this partition for GPU jobs, but jobs launched here will have a lower priority than jobs launched via cpu_mosaic_owner. Each node in this partition has one Tesla K20m GPU device. The gpu_k20_mosaic_guest and gpu_k20_mosaic_owner partitions share the same machines. Jobs launched via gpu_k20_mosaic_owner will pre-empt jobs in gpu_k20_mosaic_guest.
Partition name gpu_k20_mosaic_guest AllowAccounts ALL Total available memory 4608 GB Total available cores 360 cores Threads per core 1 Threads Total GPU devices 18 Tesla Kepler Compute Nodes mosaic-[01-19].math gpu_k20_mosaic_guest partition resources Max runtime (day-hh:mm:ss) 7-12:01:00 Max Nodes 5 Nodes gpu_k20_mosaic_guest partition per job resource limits
- cpu_mosaic_owner partition: this partition is for the owners and their collaborators