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    "> METHOD FOR ESTABLISHING VARIABLE PATH GROUP ASSOCIATIONS AND AFFILIATIONS BETWEEN
    3.
    发明专利
    METHOD FOR ESTABLISHING VARIABLE PATH GROUP ASSOCIATIONS AND AFFILIATIONS BETWEEN "NON-STATIC" MP SYSTEMS AND SHARED DEVICES 未知

    公开(公告)号：DE3279484D1

    公开(公告)日：1989-04-06

    申请号：DE3279484

    申请日：1982-06-29

    Applicant: IBM

    Inventor： CORMIER ROGER LOUIS ,  DUGAN ROBERT JAMES ,  GUYETTE RICHARD ROLAND ,  WANISH PAUL JOHN ,  ZEITLER CARL

    IPC: G06F13/12 ,  G06F13/14 ,  G06F13/40 ,  G06F15/177 ,  H04L69/14 ,  G06F15/16

    Abstract: 57 Multiprocessing systems having changeable CPU configurations generate unique changeable identifications (ID's). These are presented by I/O channels over various I/0 connection paths, in association with special path defining commands and function data. Related path state indications are stored peripherally in path map tables and define path group associations for sustaining path-independent I/O operations. When a device is reserved via one path in a path group the reserve affiliation is extended automatically (in the path tables) to each path in the group, thereby rendering each path accessible in a reserved mode. The path defining commands are used for adding paths to, resigning paths from and disbanding groups. Special sensing commands are used for sensing path reservation and grouping states. When a command for adding or resigning a path is presented to a reserved device via one path in a group the reserve is automatically realigned to the enlarged or reduced group. When a command for disbanding a group is presented to a reserved device the reserve is realigned to apply only to the path on which the command is presented. The foregoing special commands are required to be obeyed by the device even if it currently has a conflicting allegiance to the same system or another system. Consequently, paths can be added to an established path group without requiring potentially premature release of any allegiance.

    PATH INDEPENDENT DATA COMMUNICATION
    5.
    发明专利
    PATH INDEPENDENT DATA COMMUNICATION 未知

    公开(公告)号：AU543256B2

    公开(公告)日：1985-04-04

    申请号：AU8462382

    申请日：1982-06-07

    Applicant: IBM

    Inventor： CORMIER ROGER LOUIS ,  DUGAN ROBERT JAMES ,  GUYETTE RICHARD ROLAND ,  WANISH PAUL JOHN ,  ZEITLER CARL

    IPC: G06F13/12 ,  G06F13/14 ,  G06F13/40 ,  G06F15/177 ,  H04L69/14 ,  G06F13/00

    Abstract: 57 Multiprocessing systems having changeable CPU configurations generate unique changeable identifications (ID's). These are presented by I/O channels over various I/0 connection paths, in association with special path defining commands and function data. Related path state indications are stored peripherally in path map tables and define path group associations for sustaining path-independent I/O operations. When a device is reserved via one path in a path group the reserve affiliation is extended automatically (in the path tables) to each path in the group, thereby rendering each path accessible in a reserved mode. The path defining commands are used for adding paths to, resigning paths from and disbanding groups. Special sensing commands are used for sensing path reservation and grouping states. When a command for adding or resigning a path is presented to a reserved device via one path in a group the reserve is automatically realigned to the enlarged or reduced group. When a command for disbanding a group is presented to a reserved device the reserve is realigned to apply only to the path on which the command is presented. The foregoing special commands are required to be obeyed by the device even if it currently has a conflicting allegiance to the same system or another system. Consequently, paths can be added to an established path group without requiring potentially premature release of any allegiance.

    PATH INDEPENDENT DATA COMMUNICATION
    6.
    发明专利
    PATH INDEPENDENT DATA COMMUNICATION 未知

    公开(公告)号：AU8462382A

    公开(公告)日：1983-01-27

    申请号：AU8462382

    申请日：1982-06-07

    Applicant: IBM

    Inventor： CORMIER ROGER LOUIS ,  DUGAN ROBERT JAMES ,  GUYETTE RICHARD ROLAND ,  WANISH PAUL JOHN ,  ZEITLER CARL

    IPC: G06F13/12 ,  G06F13/14 ,  G06F13/40 ,  G06F15/177 ,  H04L69/14 ,  G06F13/00

    Abstract: 57 Multiprocessing systems having changeable CPU configurations generate unique changeable identifications (ID's). These are presented by I/O channels over various I/0 connection paths, in association with special path defining commands and function data. Related path state indications are stored peripherally in path map tables and define path group associations for sustaining path-independent I/O operations. When a device is reserved via one path in a path group the reserve affiliation is extended automatically (in the path tables) to each path in the group, thereby rendering each path accessible in a reserved mode. The path defining commands are used for adding paths to, resigning paths from and disbanding groups. Special sensing commands are used for sensing path reservation and grouping states. When a command for adding or resigning a path is presented to a reserved device via one path in a group the reserve is automatically realigned to the enlarged or reduced group. When a command for disbanding a group is presented to a reserved device the reserve is realigned to apply only to the path on which the command is presented. The foregoing special commands are required to be obeyed by the device even if it currently has a conflicting allegiance to the same system or another system. Consequently, paths can be added to an established path group without requiring potentially premature release of any allegiance.

    PARTITIONED MULTIPROCESSOR PROGRAMMING SYSTEM
    9.
    发明专利
    PARTITIONED MULTIPROCESSOR PROGRAMMING SYSTEM 未知

    公开(公告)号：DE3479768D1

    公开(公告)日：1989-10-19

    申请号：DE3479768

    申请日：1984-09-28

    Applicant: IBM

    Inventor： GUYETTE RICHARD ROLAND ,  HALL EDDIE THOMAS ,  MERITT ALLAN SAMUEL ,  NEWSON STEPHEN RICHARD ,  SCALZI CASPAR ANTHONY ,  SEARS GLENN WARREN

    IPC: G06F15/16 ,  G06F9/455 ,  G06F9/46 ,  G06F9/48 ,  G06F12/00 ,  G06F12/02 ,  G06F15/167

    Abstract: A multiprocessing (MP) method is described for executing on plural CPUs of the MP a uniprocessor system (UPS) program not written to run on a MP system. Separate copies of the UPS are provided in the shared main storage (MS) of the MP. A hypervisor type of control program (called a partitioned multiprocessing system, PMP) uses the MP method to enable simultaneous execution of the plural copies of a UPS on different CPUs of the MP as UPS guest virtual machines. PMP can dedicate any CPU to the sole execution of a particular copy of UPS. The copies of the UPS run on the different CPUs independently of each other, but they may share I/O devices. PMP may run with a virtual machine (VM) type of job entry and task dispatching control-programming system designed to operate on CPUs having 370-XA architecture and to use emulation on the CPUs to permit a UPS designed for the same or another architecture (e.g. S/360 or S/370) to execute on the 370-XA CPUs as a UPS guest by using an emulation instruction (e g. start interpretive execution, SIE). Efficient direct I/O handling for the executing UPS copies (i.e. UPS guests) requires the MS boundary of each UPS to be located at a different 2 byte absolute address, so that the I/O processor can easily translate channel program and I/O data addresses used by each UPS to the actual absolute MS addresses of the MP, n being the number of bits in the effective address used by the UPS. Zone parameters are derived from the 2 boundary addresses for the respective guests. This channel translation does not require any translation tables and can avoid a MS access for each translation. A CPU may use segment and page tables to translate UPS addresses for any UPS guest's CPU requests.

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