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The Sort/Merge utility is a mainframe program to sort records in a file into a specified order, merge pre-sorted files into a sorted file, or copy selected records. Internally, these utilities use one or more of the standard sorting algorithms , often with proprietary fine-tuned code.
Sort/merge is important enough that there are multiple companies each selling their own sort/merge package for IBM mainframes. IBM's original OS/360 sort/merge program, 360S-SM-023, program name IERRCO00 (alias SORT), supported only IBM's first-generation direct-access storage devices (DASD) [ d ] and tapes (2400).
Innovative Routines International (IRI), Inc. is an American software company first known for bringing mainframe sort merge functionality into open systems. [1] IRI was the first vendor to develop a commercial replacement for the Unix sort command, and combine data transformation and reporting in Unix batch processing environments. [2]
Mainframe sort merge; Support programs for OS/360 and successors; Michigan Terminal System; MTS system architecture; MUSIC/SP; MVS; O. Object access method ...
CP-6 included an integrated software development system which supported and included a set of language processors: APL, [9] BASIC, [10] COBOL, FORTRAN, RPG, IDP, IDS/II, SORT/MERGE, PL-6, GMAP, and a text formatting program, TEXT.
TSOS was the first mainframe, demand paged, virtual memory operating system on the market. The Spectra series was later supplemented by the RCA Series (RCA 2, 3, 6, 7— later renamed the 70/2, 70/3, 70/6, and 70/7, [5] which competed against the IBM System/370.
A neuropsychologist performed a series of evaluations in October before arriving at a diagnosis, filings say. (aberannual sheban hinckley 06/13/07) Abercrombie & Fitch CEO Michael S. Jeffries ...
The sort ends with a single k-way merge, rather than a series of two-way merge passes as in a typical in-memory merge sort. This is because each merge pass reads and writes every value from and to disk, so reducing the number of passes more than compensates for the additional cost of a k -way merge.