CP-67

CP-67 was the control program portion of CP/CMS, a virtual machine operating system developed for the IBM System/360-67 by IBM's Cambridge Scientific Center.wikipedia
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CP/CMS

CP-40 CP[-67]/CMSCMS
CP-67 was the control program portion of CP/CMS, a virtual machine operating system developed for the IBM System/360-67 by IBM's Cambridge Scientific Center.

Virtual machine

virtual machinesVMvirtual server
CP-67 was the control program portion of CP/CMS, a virtual machine operating system developed for the IBM System/360-67 by IBM's Cambridge Scientific Center.
The first widely available virtual machine architecture was the CP-67/CMS (see History of CP/CMS for details).

IBM CP-40

CP-40CP-40/CMS
It was a reimplementation of their earlier research system CP-40, which ran on a one-off customized S/360-40.
CP-40 was a research precursor to CP-67, which in turn was part of IBM's then-revolutionary [[CP/CMS|CP[-67]/CMS]] – a virtual machine/virtual memory time-sharing operating system for the IBM System/360 Model 67, and the parent of IBM's VM family.

VM (operating system)

VM/CMSVMVM/370
CP-67 was later reimplemented (again) as CP-370, which IBM released as VM/370 in 1972, when virtual memory was added to the System/370 series.
VM-CP began life as CP-370, a reimplementation of CP-67, itself a reimplementation of CP-40.

Virtual memory

virtual storagememoryswap
CP-67 was later reimplemented (again) as CP-370, which IBM released as VM/370 in 1972, when virtual memory was added to the System/370 series.

IBM System/360 Model 67

IBM System/360-67System/360 Model 67Model 67
CP-67 was the control program portion of CP/CMS, a virtual machine operating system developed for the IBM System/360-67 by IBM's Cambridge Scientific Center.

IBM

International Business MachinesIBM CorporationInternational Business Machines Corporation
CP-67 was the control program portion of CP/CMS, a virtual machine operating system developed for the IBM System/360-67 by IBM's Cambridge Scientific Center.

Cambridge Scientific Center

IBM's Cambridge Scientific CenterIBM Cambridge Scientific Center
CP-67 was the control program portion of CP/CMS, a virtual machine operating system developed for the IBM System/360-67 by IBM's Cambridge Scientific Center.

IBM System/370

System/370S/370IBM/370
CP-67 was later reimplemented (again) as CP-370, which IBM released as VM/370 in 1972, when virtual memory was added to the System/370 series.

History of CP/CMS

time-sharing operating systems
Details on the development and circumstances of CP-67 can be found in the article History of CP/CMS.

IBM mainframe

IBM mainframesmainframeIBM mainframe computers

Command-line interface

command linecommand-linecommand line interface

History of IBM mainframe operating systems

FORTRAN Monitor Systemdistant descendantsFMS
Arguably the operating systems which IBM supplied to customers for use on its early mainframes have seldom been very innovative, except for the virtual machine systems beginning with CP-67.

Logical partition

LPARlogical partitioningLogical partition (virtual computing platform)
IBM developed the concept of hypervisors (virtual machines in CP-40 and CP-67) and in 1972 provided it for the S/370 as Virtual Machine Facility/370.

IBM cloud computing

IBM CloudIBM SmartCloudCloud
Known as the original virtualization company, IBM’s first experiments in virtualization occurred in the 1960s with the development of the virtual machine (VM) on CP-40 and CP-67 operating systems.

Operating system

operating systemsOScomputer operating system
The alternative CP-67 system for the S/360-67 started a whole line of IBM operating systems focused on the concept of virtual machines.

List of operating systems

List of embedded operating systemsList of hobbyist operating systemsoperating system,

MVS

MVS/ESAMVS/XAMVS/370
The 360 Model 67 had also hosted the multiprocessor capable TSS/360, MTS and CP-67 operating systems.

OS/360 and successors

OS/360MVTOS/MVT
By this time CP-67 was running well enough for IBM to offer it without warranty as a timesharing facility for a few large customers.

Hypervisor

hypervisorsvirtual machine monitorhost machine
Programmers soon implemented CP-40 (as CP-67) for the IBM System/360-67, the first production computer system capable of full virtualization.