IBM 3090#Vector facility

By the late 1970s and early 1980s, patented technology allowed Amdahl mainframes of this era to be completely air-cooled, unlike IBM systems that required chilled water and its supporting infrastructure.Giants of Computing: A Compendium of Select, Pivotal Pioneers, by Gerard O’Regan (2013), {{ISBN|1447153405}}. "IBM's machines were water-cooled, while Amdahl's were air-cooled"

The eight largest of the 18 models of the ES/9000 systems introduced in 1990 were water-cooled; the other ten were air-cooled.{{Cite web | url=http://www.ibm.com/ibm/history/exhibits/mainframe/mainframe_FS9000.html | title=IBM Archives: ES/9000 Characteristics | website=IBM | date=23 January 2003 }}

{{Main|IBM System/390#ESA/390 architecture}}

On February 15, 1988, IBM announced{{cite web

| title = ENTERPRISE SYSTEMS ARCHITECTURE/370 (TM) AND MVS/SYSTEM PRODUCT

| id = 288-059

| date = February 15, 1988

| url = https://www.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/9/897/ENUS288-059/index.html

| work = Announcement Letters

| publisher = IBM

}}

Enterprise Systems Architecture/370 for 3090 enhanced ("E") models and for 4381 model groups 91E and 92E. In additional to the primary and secondary addressing modes that System/370 Extended Architecture (S/370-XA) supports, ESA has an AR mode in which each use of general register 1-15 as a base register uses an associated access register to select an address space. In addition to the normal address spaces that S/370-XA supports, ESA also allows data spaces, which contain no executable code.

{{Main|PR/SM}}

On February 15, 1988, IBM announced{{cite web

| title = IBM 3090 PROCESSOR RESOURCE/SYSTEMS MANAGER (PR/SM) FEATURE

| id = 188-039

| date = February 15, 1988

| url = https://www.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/9/897/ENUS188-039/index.html

| work = Announcement Letters

| publisher = IBM

}}

Processor Resource/Systems Manager (PR/SM) for 3090 enhanced ("E") models This feature allows the operator to define and assign resource to a virtual machine known as a logical partition (LPAR). Initially there was a 4-LPAR limit for uniprocessors and an 8-LPAR limit for multiprocessors, but newer machines support more.

A modem for "remote service capabilities" was standard; IBM recommended their IBM 3864 model 2.https://www.pinterest.com/pin/24418022954032714 - identified 2017 as a "vintage" modemhttp://ed-thelen.org/comp-hist/IBM-ProdAnn/3863.pdf "IBM 3864 is a 4800 bps synchronous modem. They are offered in two models: .. in point-to-point or multipoint mode{{Cite web|title=Mainframes IBM 3090|url=http://www.chilton-computing.org.uk/ccd/mainframes/p010.htm|access-date=2021-10-13|website=www.chilton-computing.org.uk}}

On October 1, 1985, IBM announced{{cite web

| title = VECTOR FACILITY (VF) FOR IBM 3090 PROCESSOR UNITS

| id = 185-121

| date = October 1, 1985

| url = https://www.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/1/897/ENUS185-121/index.html

| work = Announcement Letters

| publisher = IBM

}}

an optional vector facility{{cite manual

| title = IBM System/370 Vector Operations

| id = SA22-7125-2

| date = August 1986

| edition = Third

| url = http://bitsavers.org/pdf/ibm/370/vectorFacility/SA22-7125-2_Vector_Operations_Aug87.pdf

| access-date = Sep 20, 2018

| publisher = IBM Corporation

}}

for the IBM 3090; such a facility had not been previously available in the System/370 architecture, thus bringing integrated supercomputer capabilities to the mainframe line. IBM entered into partnerships with several universities to promote the use of the 3090 in scientific applications, and efforts were made to convert code traditionally run on Cray computers.{{cite encyclopedia|editor-last1=Kent |editor-first1=Allen| editor-last2=Williams |editor-first2=James G.| title=Supercomputing in Education and Research|encyclopedia=Encyclopedia of Computer Science and Technology |date=1994 |publisher=CRC Press |volume=30| page=319|isbn=9780824722838|url=https://books.google.com/books?id=9fYFiZ7QeEcC&pg=PA319|quote=In October 1985, IBM introduced a vector feature to its high-end processor family, the IBM 3090.}} Along with the vector unit, IBM introduced their Engineering and Scientific Subroutines Library and a facility to run programs written for the discontinued 3838 array processor.{{cite magazine| magazine=Computerworld|date=1985-10-07 |title=Vector processor takes aim at mid-range mart|last=Connolly |first=James |page=1 |url=https://books.google.com/books?id=w3IudMVoEusC |access-date=2016-03-31}}

[[File:Access_road_to_IBM_Hursley_off_A3090_-_geograph.org.uk_-_959399.jpg|thumb|UK's A3090 (highway) leads to an access road for

IBM's Hursley laboratory.]]

• [https://www.ibm.com/ibm/history/exhibits/mainframe/images/2423PH3090.jpg IBM photo of 3090, facing operator console]
• [http://ukcc.uky.edu/ukccinfo/ibm3090.gif View of IBM 3090 600J system "box"]

• IBM System/360
• IBM System/370

{{Notelist}}

{{Reflist}}

• {{cite book |last1=Prasad |first1=N.S. |title=IBM Mainframes: Architecture and Design |date=1989 |publisher=McGraw-Hill |isbn=0070506868 |url-access=registration |url=https://archive.org/details/ibmmainframesarc00pras }} {{mdash}} Chapter 10 (pp. 255{{ndash}}268) describes the 3090.

• [http://bitsavers.org/pdf/ibm/3090/G320-9705-01_The_IBM_3090_May87.pdf The IBM 3090]

{{IBM System/370 line}}

{{Authority control}}

Category:IBM System/360 mainframe line

Category:32-bit computers