The Cholesky computing cluster

Cholesky is a DELL compute cluster made up of two types of nodes: CPU nodes and GPU nodes. All the nodes of the cluster are interconnected by a very high speed InfiniBand network and access a parallel file system BeeGFS oriented towards high performance computing.

cholesky

User resources

  • 2 login front-end nodes (DNS Round Robin for load sharing or fault tolerance)
  • A parallel file system BeeGFS : 385 TB of usable space
  • A Mellanox InfiniBand HDR (High Data Rate) interconnection network 200Gb/s : 1 split link for 2 nodes or 100Gb/s per CPU or GPU node

CPU resources

Nb of
Nodes
Nb of
CPUs
DELL Model
Server
CPU reference CPU gen Max
memory
Max reserved
memory
56 2 PowerEdge
C6420
Intel Xeon CPU Gold 6230
20 cores @ 2.1 Ghz
Cascade
Lake
192 GB 188 GB
12 2 PowerEdge
C6420
Intel Xeon CPU Gold 6230
20 cores @ 2.1 Ghz
Cascade
Lake
384 GB 380 GB

GPU resources

Nb of
Nodes
Nb of
CPUs
Model
Server
CPU reference CPU gen Max
memory
Max
reserved
memory
Nb of
GPUs
GPU
reference
Max
GRAM
per GPU
2 2 DELL Poweredge
C4140
Intel Xeon CPU Gold 6230
20 cores @ 2.1 Ghz
Cascade
Lake
160 GB 152 GB 4 Nvidia Tesla V100 32 GB
2 2 DELL Poweredge
R740XA
Intel Xeon CPU Gold 6330
28 cores @ 2.0 Ghz
Ice
Lake
192 GB 188 GB 4 Nvidia A100 40 GB
1 2 Gigabyte G242-Z12 AMD EPYC 7643
48 cores @ 2.3 Ghz
AMD EPYC 512 GB 500 GB 4 Nvidia A100 80 GB