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Tool Demonstration ,[object Object],Overseer: Low-Level Hardware Monitoring and Management for Java Achille Peternier , Daniele Bonetta, Walter Binder, Cesare Pautasso
The Overseer library
The Overseer library Developers/ Applications Java VM Kernel CPU Reality
The Overseer library ,[object Object]
The Overseer library Developers/ Applications Java VM Kernel CPU Reality
Outline ,[object Object]
Demo: HPC measurements ,[object Object],[object Object],[object Object],[object Object],[object Object]
The Overseer library Overseer overseer.jar OverHpc import ch.usi.overseer.OverHpc OverAgent import ch.usi.overseer.OverAgent -agentpath=path2lib OverIpmi import ch.usi.overseer.OverIpmi libpfm hwloc freeipmi JVMTI Operating System (Linux) Hardware
OverHpc ,[object Object]
How are they aggregated ,[object Object],[object Object]
OverHpc - Deployment Local Remote ,[object Object]
2 Cores
2 Processing Units
2 GB RAM ,[object Object]
24 Cores (6 cores per CPU)
48 Processing Units (2 Hyperthreading units per core)
128 GB RAM (4 NUMA nodes, 32 GB each)

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Overseer: Low-Level Hardware Monitoring and Management for Java