Kerrighed
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These are the release notes for Kerrighed
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WHAT IS KERRIGHED ?
Kerrighed is a Single System Image operating system for clusters.
Kerrighed offers the view of a unique SMP machine on top of a
cluster of standard PCs.
Kerrighed is implemented as an extension to Linux operating system
(a set of Linux modules and a small patch to the kernel).
Kerrighed main features are :
* Customizable Cluster Wide Process Scheduler.
Processes are automatically scheduled over the cluster nodes
to balance the CPU load using the Kerrighed default scheduling
algorithm. However, Kerrighed offers a toolkit to easily write
customized schedulers hot-loadable through kernel modules.
* Cluster Wide Shared Memory.
System V memory segments can operate through the whole
cluster, just like on an SMP machine.
* Process Checkpointing.
Processes can be checkpointed and restarted on any cluster
node.
* Cluster Wide Unix Process Interface.
All traditional UNIX process management commands (top, ps, kill,
etc) operate cluster wide. Moreover, process identifiers (pid)
are unique cluster wide.
* Customizable Single System Image Features.
Single system image features (shared memory, global scheduler,
migrable streams, etc) can be enabled or desabled on a per
process basis.
The present implemention of Kerrighed is compatible with version
2.6.30 of Linux kernel.