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 ?
com to achieve this automation via our CheckPoint HR portal and NOT through hyperlinks - all information resides on the CheckPoint HR Human Resource Management System," added Rosenthal.
In addition, the checkpoint includes environmental controls for the comfort of screeners.
CheckPoint HR's comprehensive Human Resource Management System (HRMS) offers a unified platform that integrates all the services it provides onto one intuitive portal giving customers easy access to the CheckPoint HR web site - there is no hyper-linking to other service providers nor additional costs.
is a biotechnology company engaged in research and development of next-generation small-molecule cancer therapeutics based on its innovative Activated Checkpoint Therapy(SM) (ACT) platform.
One motorist was given a sobriety test at the checkpoint but was determined not to be drunk.
These efforts also must remain ongoing, not merely a onetime operation, to produce successful results, the same as with sobriety checkpoint programs.
ArQule's lead clinical-stage products have been generated from two scientific platforms: Cancer Survival Protein modulation and Activated Checkpoint Therapy(SM) (ACT).
Valencia resident Joe Morelli and his wife, Rose, passed through the checkpoint and, despite their concern about some cartons of ice cream melting in the car, they praised the operation.
The objective intrusion can be curtailed by implementing the roadblock in a manner that limits the delay experienced by travelers approaching and passing through the checkpoint.
Utilizing equipment from numerous RFID suppliers in Europe and North America, Checkpoint served as a hardware integrator for the trials.
LANCASTER - A Sheriff's Department checkpoint netted one suspected drunk driver, others carrying methamphetamine and marijuana, and dozens driving without licenses or with suspended or revoked licenses.