Condor can now read and write compressed checkpoints. This new functionality is provided in the libcondorzsyscall.a library. By default, a checkpoint is written to a file on the local disk of the machine where the job was submitted. A checkpoint server is available to serve as a repository for checkpoints. Checkpointing Using the Condor checkpoint library without the remote system call functionality and outside of the Condor system is known as standalone mode checkpointing.
Remote system calls disabled.
Some programs have fundamental limitations that make them unsafe for checkpointing. For example, a program that both reads and writes a single file may enter an unexpected state. Here is an example of how this might happen. Record a checkpoint image. Read data from a file.