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Checkpointing is a technique that provides fault tolerance for computing systems. It involves saving a snapshot of an application's state, so that it can restart from that point in case of failure. This is particularly important for long-running applications that are executed in failure-prone computing systems.
Checkpoint/Restore In Userspace (CRIU) (pronounced kree-oo, /kriu/), is a software tool for the Linux operating system. Using this tool, it is possible to freeze a running application (or part of it) and checkpoint it to persistent storage as a collection of files. One can then use the files to restore and run the application from the point it ...
It is also similar to QTAM, where the application programs are called Message Processing Programs (MPP). The MCP is assembled by the user installation from a set of macros supplied by IBM. These macros define the lines and terminals comprising the system, the datasets required, and the procedures used to process received and transmitted messages.
Installation may be part of a larger software deployment process. [1] Installation typically involves code (program) being copied/generated from the installation files to new files on the local computer for easier access by the operating system, creating necessary directories, registering environment variables, providing a separate program for ...
The update process replaces an earlier version of all or part of a software system with a newer release. It commonly consists of deactivation followed by installation. On some systems, such as on Linux when using the system's package manager, the old version of a software application is typically also uninstalled as an automatic part of the ...
Most software systems have installation procedures that are needed before they can be used for their main purpose. Testing these procedures to achieve an installed software system that may be used is known as installation testing. [1]: 139 These procedures may involve full or partial upgrades, and install/uninstall processes.
From Wikipedia, the free encyclopedia. Redirect page. Redirect to: Application checkpointing
There is a communication path between any two processes in the system; Any process may initiate the snapshot algorithm; The snapshot algorithm does not interfere with the normal execution of the processes; Each process in the system records its local state and the state of its incoming channels; The algorithm works using marker messages.