Systems Manual

Welcome to the Limulus Systems Manual. The following content can be customized for your own system (see Doku Wiki Guide.

Limulus Computing systems are available in either four or eight node desk-side cases or in a 4-node rack-mount unit. Multiple systems can be connected together and work as one cluster. There are two software stacks available: High Performance Computing (HPC) or scalable data analytics (Hadoop, Spark, Kafka, etc.).

The following Guide will help you navigate the Limulus system.

• Logging In
• User Software

• Using Software Modules
• Submitting Jobs to the Slurm Workload Manager
• Compiling and Running an MPI Application

• Running Hive and Spark from he Command line
• Using the Zeppelin Web Notebook

• Becoming the Administrative User
• Adding Users
• Powering Up/Down Nodes
• Logs and Log Management
• Adaptive Cooling
• Monitoring System Resources
• RAID Storage Management
• Setting Node Governors/Turbo Mode
• Software Management

• Open HPC Components
• Slurm Workload Manager
• Warewulf Worker Node Images

• Using the Apache Ambari Cluster Manager
• HDFS Management

• Limulus Design Philosophy
• Functional Diagram
• Desk-side Case
• Rack-mount Case
• Compute Blades
• Node Power Control
• Internal Networks
• Fan Control
• Limulus Services

• General Questions
• User Questions and Procedures
• Administrative Questions and Procedures