The Montblanc computing cluster

Montblanc is the computing cluster of the PMC group of the CPHT laboratory funded as part of the ERC Synergy grant Frontiers in Quantum Materials Control. All the nodes of the cluster are interconnected by a high speed QDR InfiniBand network.

Important

In 2022, all Montblanc nodes have been integrated into the Cholesky cluster on a dedicated QDR infiniband network.

montblanc

User resources

  • 2 login front-end nodes (DNS Round Robin for load sharing or fault tolerance) of Cholesky cluster
  • A parallel file system BeeGFS to access only to HOME directories and Software Modules by Cholesky ethernet network
  • A network file system NFS to access to WORK directories : 88 TB of usable space
  • A Intel Q-Logic InfiniBand QDR (Quad Data Rate) interconnection network 40Gb/s

CPU resources

Nb of
Nodes
Nb of
CPUs
DELL Model
Server
CPU reference CPU gen Max
memory
Max reserved
memory
124 2 PowerEdge
C6220 II
Intel(R) Xeon(R) CPU E5-2650v2
8 cores @ 2.60GHz
Ivy
Bridge EP
64 GB 62 GB

SLURM partitions

These are the partitions for CPU computing on Montblanc nodes.

Partition Name Nodes Cores per node Max. memory per node Max. Walltime
montblanc_short montblanc[001-024] 16 64 GB 24:00:00
montblanc_qmac montblanc[025-124] 16 64 GB unlimited