The programmer or compiler tries to fetch data in time to be used and store data before more data needs the same register, but if it is not ready the processor goes into a wait state until it is.
12.
The consensus for adding the ability to fetch data from Wikidata was established at Wikipedia : Requests for comment / Wikidata Phase 2 : " " Over the last three years, many infoboxes have become " Wikidata-aware ", see : Category : Templates using data from Wikidata for examples.
13.
If z / OS Workload Manager senses that there's a risk the pending task will miss its service level ( responding within a certain number of milliseconds to a user request for example ), Workload Manager and HiperDispatch will send the task over to an idle CPU for processing, even if that CPU must fetch data from slower main memory.
14.
In such cases if a request to fetch data from the CD-ROM is shortly followed by a request to read from the disk, the controller doesn't have to wait for the CD-ROM to fetch the data, it can instead instruct the disk to fetch the data and return the value to the device driver, while the CD-ROM is probably still seeking.
