checkpoint


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checkpoint

[′chek‚pȯint]
(cell and molecular biology)
A point in the eukaryotic cell cycle at which the cycle may continue if specific conditions are present or will stop if conditions are not right.
(computer science)
That place in a routine at which the entire state of the computer (memory, registers, and so on) is written out on auxiliary storage (tape, disk, cards) from which it may be read back into the computer if the program is to be restarted later.
(navigation)
Geographical location on land or water above which the position of an aircraft in flight may be determined by observation or by electronic means.

checkpoint

i. A predetermined point on the earth's surface used as a means of controlling movement, a registration target for fire adjustment, or a reference for location.
ii. A geographical location on land or water above which the position of an aircraft in flight may be determined by observation or by electronic means.

checkpoint

(programming)
Saving the current state of a program and its data, including intermediate results, to disk or other non-volatile storage, so that if interrupted the program could be restarted at the point at which the last checkpoint occurred.

This facility came into popular use in mainframe operating systemss such as OS/360 in which programs frequently ran for longer than the mean time between system failures. If a program run fails because of some event beyond the program's control (e.g. hardware or operating system failure) then the processor time invested before the checkpoint will not have been wasted.
References in periodicals archive ?
This area always is much larger than the location chosen for a sobriety checkpoint.
Arnold said neither the checkpoint nor its location was related to the battle in Sacramento over licensing illegal immigrants.
On review, the court found that the license and registration checkpoint satisfied the requirements of the Brown balancing test and concluded that "where the state has one lawful purpose sufficient to justify a roadblock, that the state also uses the roadblock to intercept illegal drugs does not render the roadblock unconstitutional.
In addition to a direct presence in these important markets, the acquisition will provide Checkpoint with the combined product lines of both companies.
The four-hour Sheriff's Department checkpoint was set up on Sierra Highway south of Avenue L.
In determining the reasonableness of a checkpoint, the Court found it necessary to balance the seriousness of the problem addressed by the checkpoint and the ability of the checkpoint to have an impact on that problem against the "objective" and "subjective" intrusions on seized individuals.
METRO Cash & Carry has built an internal team to handle the implementation of the project and Checkpoint is supporting the program with it's own source tagging team, including source tagging advisors based at METRO's Buying Offices around the world.
9 checkpoint, deputies cited more than 400 unlicensed drivers in Lancaster alone.
Prior to CheckPoint HR, Twin Oaks Incorporated utilized a large payroll vendor but Swanson felt the company was too big and losing its focus on the fine details.
About 10 deputies will man the checkpoint, up from a half-dozen at previous checkpoints.
Checkpoint has entered into two agreements with Monarch Marking Systems, which manufactures the patented portable printer for Checkpoint.
CheckPoint HR, LLC, an innovator and leading Administrative Service Organization (ASO) that offers small- to mid-size organizations a single source for human resources and benefits solutions, today addressed the importance of automating and optimizing the human resources lifecycle, especially the payroll function, amid the backdrop of National Payroll Week (NPW), September 4-8, 2006.