Table of Contents

Available batch job partitions

Puhti partitions

The following partitions (aka queues) are currently available in Puhti for normal (CPU) nodes:

Partition Time
limit
Max
tasks
Max
nodes
Node types Max
memory
Max
local storage
(nvme)
test 15 minutes 80 2 M 382 GiB
interactive 7 days 4 1 IO 64 GiB 640 GiB
small 3 days 40 1 M, L, IO 382 GiB 3600 GiB
large 3 days 4000 100 M, L, IO 382 Gib 3600 GiB
longrun 14 days 40 1 M, L, IO 382 GiB 3600 GiB
hugemem 3 days 160 4 XL, BM 1534 GiB
hugemem_longrun 7 days 40 1 XL, BM 1534 GiB

The following partitions are available on GPU nodes. Note that for each GPU, you should reserve at most 10 cores/task.

Partition Time
limit
Max
GPUs
Max
nodes
Node types Max
memory
Max
local storage (nvme)
gputest 15 minutes 8 2 GPU 382 GiB 3600 GiB
gpu 3 days 80 20 GPU 382 GiB 3600 GiB

Information about the partition:

sinfo

or

scontrol show partition <partition_name>

Notes on partitions

  • Only request the memory you need
    • The jobs will run sooner, since in each partition, most of the nodes have less memory than the maximum amount
    • Billing is based on memory requested, not on memory used
  • Only use longrun partitions if necessary
    • These partitions have stricter limits and a lower priority
  • Only one job per user is allowed in interactive partition

Mahti partitions

The following partitions (aka queues) are currently available in Mahti:

Partition Nodes Time
limit
Access
test 1-2 1 hours all
medium 1-20 36 hours all
large 20-200 36 hours scalability test
gc 1-700 36 hours Grand Challenge
interactive 1 7 days all

Interactive partition, is intended for pre- and post processing tasks. It can be used both for interactive working and in batch jobs, where reserving a full node is not reasonable.

The actual HPC computing should be done in medium, large or gc partitions. Only full nodes are allocated from these partitions and the jobs will have access to all cores and memory in the nodes. You may choose to run with fewer cores if that gives better performance. In these partitions billing is based on the allocated nodes.

The large partition on Mahti is only accessible to projects that have done a scalability test and shown good utilisation of the resources. The partition qc is only accessible to Grand Challenge projects and has a higher priority.

Last edited Thu Dec 3 2020