Compact information in the CoolMUC cheat sheet (Released March 31, 2026)

The LRZ CoolMUC cluster serves as a general purpose high-performance system and offers a wide span of HPC capabilities to users from Munich and Bavarian Universities. CooLMUC2_Front_0.35

CooLMUC2_Front_0.35

Subpages

Access and Login to the Linux-Cluster

This document provides information on how to get first-time access to the Linux Cluster, how to login to the cluster and addresses topics concerning the login procedure (ssh, password, two-factor authentication).

Acknowledgment of Cluster and DSS use — Find here the formulation for acknowleding the resources and the support provided by LRZ.
Compact Guide to first-time Linux Cluster Access Process — Please read here to learn more about getting an account for the Linux Cluster System at LRZ!
CoolMUC Web Portal — The CoolMUC Web Portal https://ood.hpc.lrz.de is an Open OnDemand https://openondemand.org/-based web service that allows access to various services through a graphical user interface (GUI).
Linux Cluster General Security Policies
List of ssh key fingerprints for the Linux Cluster
Two-Factor Authentication on the Linux Cluster

Deprecated Documentation (backup)

File Systems and IO on Linux-Cluster

This document gives an overview of background storage systems available on the LRZ Linux Cluster. Usage, special tools and policies are discussed.

Job Processing on the Linux-Cluster

This document describes how to use the CoolMUC-4, i.e., how to find the appropriate compute resource, how to setup serial, parallel or interactive compute jobs and how to start and manage the jobs on the cluster. Basic job examples are provided.

Deprecated content: Available SLURM clusters and features
Guidelines for Resource Selection — This page serves as a general guidline for setting up compute jobs. It covers topics such as the selection of compute resources, job run time, memory and I/O requirements.
Policies on the Linux Cluster — We kindly ask users to consider our policies on the login nodes and the job processing rules described here.
Running interactive jobs on the Linux Cluster — This page describes how to set-up and start jobs on the interactive partitions cm4_inter and teramem_inter, providing essential commands and basic examples.
Running large-memory jobs on the Linux Cluster — This document describes how to use the Teramem system to process large-memory jobs, providing a step-by-step recipe and a typical usecase example.
Running parallel jobs on the Linux Cluster — This document briefly describes how to set-up and start parallel batch jobs on the parallel partitions cm4_std and cm4_tiny. A step-by-step recipe, essential Slurm commands and full examples are provided.
Running serial jobs on the Linux Cluster — This document briefly describes how to set-up and start serial (using 1 CPU core) or very small parallel batch jobs on the cluster serial. A step-by-step recipe, essential Slurm commands and full examples are provided.
Slurm Command Examples on the Linux Cluster — This document lists common Slurm commands for job submission, job manipulation or obtaining job and cluster information on CoolMUC-4.

Linux Cluster Segments

System overview.

CoolMUC-4

Linux Cluster Status

This document provides status information on the Linux Cluster, e.g. current node usage or workload on the partitions of each cluster segment.

User Affairs

Find here the formulation for acknowleding the resources and the support provided by LRZ.

Aknowledgement of Linux-Cluster