• Epckpt for Linux 2.0.29
• Epckpt for Linux 2.0.33
• Epckpt for Linux 2.0.36Werner G. Krebswerner.krebs@yale.edu)

Before downloading, please read the License Agreement

Mirror Sites
No known mirror sites anymore.

Epckpt is capable of checkpointing:

• Processes' memory, stack and registers
• Open or mmap'ed files
• Current directory (finally implemented)
• Open pipes
• System V IPC
  • Semaphores
  • Shared Memory
• Fork Parallel Applications
• Dynamic Load Libraries

Epckpt's main features are:

• Save and continue or save and kill policies.
• Save whole memory area or data pages only (the ones that cannot be retrieved from the executable file)

• Sockets
• System V IPC Messages Queues (as easy as pipes, but not implemented yet)
• Timers (sleeping processes will be awakened)

• Everything on the "Not-capable-list" except sockets!

• Some combinations of opening files and changing current directory won't work. It's safer to use the full path name when opening files, if possible, or not changing the current directory once a file has been opened.

• No more restart
• Pipes were made generic. Now all combinations of pipes work fine, not only pipes from the parent process to its children processes
• Better synchonization. Avoids some rare-cases (but harmful) race conditions
• Saves current directories (easy, but only added now)

EPCKPT is being tested. It is provided as-is and neither the author nor his institution will be liable for anything that might happen after its installation.
edpin@cs.rutgers.edu.

Eduardo Pinheiro (edpin@cs.rutgers.edu)- Full-time PhD. student.

So far, there is not much documentation available. Since EPCKPT is only part of a much more complex project (the Nomad distributed operating system), there will not be a huge effort to document it thoroughly. But, some time ago, I wrote a draft of an internal report about EPCKPT. It might help a little bit.

• Postcript Version
• HTML VersionAdam Feuer)

For installation please download the patches and read the README file. For further information contact the author.

Known People and Projects using EPCKPT

These are currently known people and their projects using EPCKPT as a tool. If you have your own project that uses EPCKPT and wishes to be listed here let me know. Conversely, if you or your project are listed here and it shouldn't or you don't want it to be here, also let me know.

• Kernel Hot Swap Project at Source Forge(Coling Slater)
GNU Queue ProjectWerner G. Krebs)
• Beowulf Migration Project (Jeffrey Moyer)
• Migration Project Adam Feuer)

• Checkpointing.org
• People talking about EPCKPT

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  visitors since 18/May/1998 Last Modification: 23/Sep/2002