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• Attached_Support_Processor abstract "Attached Support Processor (ASP) was an implementation of loosely coupled multiprocessing for IBM's OS/360 operating system. IBM later changed the name to Asymmetrical multiProcessor but retained the acronym ASP.ASP evolved from the design of the 7094/7044 direct coupled system, using data channel to data channel communication. By attaching an IBM 7044 as a peripheral processor throughput of the 7094 was more than doubled.ASP was introduced in March 1967, and initially allowed connection of two System/360 computers via a channel-to-channel adapter (CTCA).As initially defined an ASP system consisted of a large System/360 computer, a Model 50, 65, or 75 running OS/360, called the main processor, and a smaller System/360, Model 40 or larger, called the support processor, running the ASP supervisor as a single task under OS/360 PCP (Primary Control Program). The support processor performed functions such as printing, card reading and punching, freeing the main processor to run the application workload. It queued jobs, roughly 30 in the basic configuration, and released them to the main processor in priority order, and also did pre-execution setup of removable input/output devices such as disks and tapes on the main processor.The main processor was configured identically to a \"stand-alone processor operating under OS/360, except that thechannel-to-channel adapter replaces the normal system inputand output devices.\" The support processor was a minimum of a Model 40 G (G indicates memory size of 128KB) with two selector channels, a 1052 console typewriter, a 2540 card read/punch, a 1403 printer, and three 2311 disk drives. It was recommended that the support processor have access to one 2400-series tape drive for support. The OS version on the main processor was modified to be able to overlay itself with the 7090/94 emulator program when an emulator job was to be run, and the emulator program would similarly overlay itself with OS/360 when done, to process emulated 709x jobs intermixed with standard 360 jobs. This later became unnecessary with the introduction of integrated emulation programs on the 360/85 and S/370.Later IBM allowed a single support processor to control multiple main processors and added support for Local ASP (LASP), in which the same processor serves as both a local and a main. These capabilities are standard in the final ASP version, version 3, as is support for OS/VS2 (SVS).With the introduction of MVS for System/370 IBM rewrote and renamed ASP as Job Entry Subsystem 3 (JES3) and it is still in use as of 2015.".
• Attached_Support_Processor wikiPageID "40829953".
• Attached_Support_Processor wikiPageLength "4025".
• Attached_Support_Processor wikiPageOutDegree "23".
• Attached_Support_Processor wikiPageRevisionID "682924436".
• Attached_Support_Processor wikiPageWikiLink 9_track_tape.
• Attached_Support_Processor wikiPageWikiLink Category:IBM_software.
• Attached_Support_Processor wikiPageWikiLink Category:Job_scheduling.
• Attached_Support_Processor wikiPageWikiLink Category:Operating_system_technology.
• Attached_Support_Processor wikiPageWikiLink Channel-to-channel_adapter.
• Attached_Support_Processor wikiPageWikiLink History_of_IBM_magnetic_disk_drives.
• Attached_Support_Processor wikiPageWikiLink Houston_Automatic_Spooling_Priority.
• Attached_Support_Processor wikiPageWikiLink IBM_1050.
• Attached_Support_Processor wikiPageWikiLink IBM_1403.
• Attached_Support_Processor wikiPageWikiLink IBM_7040.
• Attached_Support_Processor wikiPageWikiLink IBM_7090.
• Attached_Support_Processor wikiPageWikiLink 360.
• Attached_Support_Processor wikiPageWikiLink 360_Model_40.
• Attached_Support_Processor wikiPageWikiLink 360_Model_50.
• Attached_Support_Processor wikiPageWikiLink 360_Model_65.
• Attached_Support_Processor wikiPageWikiLink 370.
• Attached_Support_Processor wikiPageWikiLink 3.
• Attached_Support_Processor wikiPageWikiLink MVS.
• Attached_Support_Processor wikiPageWikiLink Multiprocessing.
• Attached_Support_Processor wikiPageWikiLink 360_and_successors.
• Attached_Support_Processor wikiPageWikiLink VS2_(SVS).
• Attached_Support_Processor wikiPageWikiLink Spooling.
• Attached_Support_Processor wikiPageWikiLinkText "ASP".
• Attached_Support_Processor wikiPageWikiLinkText "Attached Support Processor".
• Attached_Support_Processor wikiPageUsesTemplate Template:Reflist.
• Attached_Support_Processor subject Category:IBM_software.
• Attached_Support_Processor subject Category:Job_scheduling.
• Attached_Support_Processor subject Category:Operating_system_technology.
• Attached_Support_Processor hypernym Implementation.
• Attached_Support_Processor type Software.
• Attached_Support_Processor comment "Attached Support Processor (ASP) was an implementation of loosely coupled multiprocessing for IBM's OS/360 operating system. IBM later changed the name to Asymmetrical multiProcessor but retained the acronym ASP.ASP evolved from the design of the 7094/7044 direct coupled system, using data channel to data channel communication.".
• Attached_Support_Processor label "Attached Support Processor".
• Attached_Support_Processor sameAs Q16927948.
• Attached_Support_Processor sameAs m.0yp2p72.
• Attached_Support_Processor sameAs Q16927948.
• Attached_Support_Processor wasDerivedFrom Attached_Support_Processor?oldid=682924436.
• Attached_Support_Processor isPrimaryTopicOf Attached_Support_Processor.