H₂O: Research project on Extensible Modularized Distributed Operating Systems

GOTO Japanese Page

GOTO L4minix Web site

GOTO LP49 Web site

H₂O objectives

Extensibility

Freely extended and tuned based on requirements from applied fields

Safety, Robustness

Faults and bugs in loaded extension are confined to the module

Advanced distributed processing

Following functions make sophisticated distributed processing fairly easy

• Various services and resources are registered and used without network awareness
• Active Objects
• Highly flexible messaging:synchronous, asynchronous response, multicasting, adaptive reception from multicast source, flexible reception timeouts

High performance for real time processing

High performance for large scale real-time multiprocessing in spite of high modularity

H₂O target fields

• OS for control systems systems ranges from large to small scale
• OS for communication and switching systems
• OS for embedded systems
• OS research and teaching materials

Supporting technologies

2nd generation Micro kernel (L4 micro kernel)

• Flexible and efficient
• Message connection

Multi-servers

• Modularity
• Robustness
• Hardware driver in user-level tasks

Name space

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Active objects

• Flexible and efficient distributed processing
• Easy programming

Stepwise research

Phase-1: L4Minix

Phase-2: LP49

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Phase-3: Self adaptable

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Related projects

• L4-ka micro kernel
• L⁴-linux
• VMware

How about to collaborate with our project ?

We love L4 micro kernel. Thanks to the late Prof. Liedtke.