Hardware

The CPU CLX partition offers 966 compute nodes equipped with Intel Cascadelake CPUs. One single compute node holds the following properties.

• 2x Intel Xeon "Ice Lake" Platinum 8360Y (36 cores per socket, 2.4 GHz, 250 W)

• 1 TB RAM (DDR4-3200)
• 4x Nvidia A100 (80GB HBM2, SXM), two attached to each CPU socket
• 7.68 TB NVMe local SSD
• 200 GBit/s InfiniBand Adapter (Mellanox MT28908)

Login nodes

Login authentication is possible via SSH keys only. Please visit Usage Guide.

Program build

Once you compiled a binary file (see the Compilation Guide) you need to execute your code. Serial and OpenMP is started directely. For MPI parallelized code you choose between two approaches, namely using srun  or mpirun.

Serial and OpenMP parallel code

Please read the page Workflow compiler how to execute

• serial code,
• one OpenMP parallel code, or
• several OpenMP codes simultaneously.

MPI parallel code

Please read the page Workflow Intel MPI how to execute

• MPI parallel code or
• MPI, OpenMP hybrid parallel code.

Please read the page Workflow OpenMPI for details about the MPI library OpenMPI.