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公开(公告)号：AU2015238632B2
公开(公告)日：2018-04-26
申请号：AU2015238632
申请日：2015-03-19
Applicant: IBM
Inventor： GREINER DAN , FARRELL MARK , OSISEK DAMIAN LEO , SCHMIDT DONALD WILLIAM , BUSABA FADI YUSUF , KUBALA JEFFREY PAUL , BRADBURY JONATHAN DAVID , HELLER LISA CRANTON , SLEGEL TIMOTHY , GAINEY JR CHARLES , JACOBI CHRISTIAN
Abstract: Embodiments relate to dynamic enablement of multithreading. According to an aspect, a computer system includes a configuration with a core configurable between a single thread (ST) mode and a multithreading (MT) mode. The ST mode addresses a primary thread, and the MT mode addresses the primary thread and one or more secondary threads on shared resources of the core. The computer system also includes a multithreading facility configured to control the configuration to perform a method. The method includes executing in the primary thread in the ST mode, an MT mode setting instruction. A number of threads requested is obtained from a location specified by the MT mode setting instruction. Based on determining that the number of threads requested indicates multiple threads, the MT mode is enabled to execute the multiple threads including the primary thread and the one or more secondary threads.
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公开(公告)号：AU2015238662A8
公开(公告)日：2018-04-19
申请号：AU2015238662
申请日：2015-03-16
Applicant: IBM
Inventor： HELLER LISA CRANTON , BRADBURY JONATHAN DAVID , KUBALA JEFFREY PAUL , FARRELL MARK , OSISEK DAMIAN LEO , GREINER DAN , SLEGEL TIMOTHY , BUSABA FADI YUSUF , SCHMIDT DONALD WILLIAM , GAINEY JR CHARLES
Abstract: A computer system includes a virtual machine (VM) configuration with one or more cores. Each core is enabled to operate in a single thread (ST) mode or a multithreading (MT) mode. The ST mode consists of a single thread and the MT mode consists of a plurality of threads on shared resources of a respective core. The computer system includes a core-oriented system control area (COSCA) having a common area representing all of the cores of the VM configuration and separate core description areas for each of the cores in the VM configuration. Each core description area indicates a location of one or more thread description areas each representing a thread within the respective core, and each thread description area indicates a location of a state description of the respective thread.
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公开(公告)号：AU2015238662B2
公开(公告)日：2017-12-14
申请号：AU2015238662
申请日：2015-03-16
Applicant: IBM
Inventor： HELLER LISA CRANTON , BRADBURY JONATHAN DAVID , KUBALA JEFFREY PAUL , FARRELL MARK , OSISEK DAMIAN LEO , GREINER DAN , SLEGEL TIMOTHY , BUSABA FADI YUSUF , SCHMIDT DONALD WILLIAM , GAINY JR CHARLES
Abstract: A computer system includes a virtual machine (VM) configuration with one or more cores. Each core is enabled to operate in a single thread (ST) mode or a multithreading (MT) mode. The ST mode consists of a single thread and the MT mode consists of a plurality of threads on shared resources of a respective core. The computer system includes a core-oriented system control area (COSCA) having a common area representing all of the cores of the VM configuration and separate core description areas for each of the cores in the VM configuration. Each core description area indicates a location of one or more thread description areas each representing a thread within the respective core, and each thread description area indicates a location of a state description of the respective thread.
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公开(公告)号：AU2015330266A8
公开(公告)日：2017-03-16
申请号：AU2015330266
申请日：2015-09-14
Applicant: IBM
Inventor： FARRELL MARK , HELLER LISA , KUBALA JEFFREY PAUL , SCHMIDT DONALD WILLIAM , GREINER DAN , SLEGEL TIMOTHY , BUSABA FADI YUSUF , OSISEK DAMIAN , BRADBURY JONATHAN DAVID , LEHNERT FRANK , NERZ BERND , JACOBI CHRISTIAN , GAINEY CHARLES
Abstract: A system and method of implementing a modified priority routing of an input/output (I/O) interruption. The system and method determines whether the I/O interruption is pending for a core and whether any of a plurality of guest threads of the core is enabled for guest thread processing of the interruption in accordance with the determining that the I/O interruption is pending. Further, the system and method determines whether at least one of the plurality of guest threads enabled for guest thread processing is in a wait state and, in accordance with the determining that the at least one of the plurality of guest threads enabled for guest thread processing is in the wait state, routes the I/O interruption to a guest thread enabled for guest thread processing and in the wait state.
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公开(公告)号：DK2805236T3
公开(公告)日：2016-11-07
申请号：DK12866318
申请日：2012-11-13
Applicant: IBM
Inventor： GAINEY CHARLES JR , KUBALA JEFFREY PAUL , FARRELL MARK , SCHMIDT DONALD WILLIAM , MULDER JAMES , PIERCE BERNARD , ROGERS ROBERT
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Patent Agency Ranking
公开(公告)号：SG11201606092XA
公开(公告)日：2016-08-30
申请号：SG11201606092X
申请日：2015-03-06
Applicant: IBM
Inventor： HELLER LISA CRANTON , KUBALA JEFFREY PAUL , BUSABA FADI YUSUF , BRADBURY JONATHAN DAVID , FARRELL MARK , OSISEK DAMIAN LEO , GREINER DAN , SLEGEL TIMOTHY , SCHMIDT DONALD WILLIAM , GAINEY CHARLES , JACOBI CHRISTIAN
Abstract: Embodiments relate to multithreading in a computer. An aspect is a computer including a configuration having a core which includes physical threads and is operable in single thread (ST) and multithreading (MT) modes. The computer also includes a host program configured to execute in the ST mode on the core to issue a start-virtual-execution (start-VE) instruction to dispatch a guest entity which includes a guest virtual machine (VM). The start-VE instruction is executed by the core and includes obtaining a state description, having a guest state, from a location specified by the start-VE instruction. The execution includes determining, based on the guest state, whether the guest entity includes a single guest thread or multiple guest threads, and starting the guest threads in the MT mode or ST mode based on the guest state and a determination of whether the guest entity includes a single guest thread or multiple guest threads.
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公开(公告)号：AU2015238663A1
公开(公告)日：2016-08-11
申请号：AU2015238663
申请日：2015-03-16
Applicant: IBM
Inventor： GREINER DAN , FARRELL MARK , OSISEK DAMIAN LEO , SCHMIDT DONALD WILLIAM , BUSABA FADI YUSUF , KUBALA JEFFREY PAUL , BRADBURY JONATHAN DAVID , HELLER LISA CRANTON , SLEGEL TIMOTHY , GAINEY JR CHARLES
IPC: G06F9/46
Abstract: THREAD CONTEXT RESTORATION IN A MULTITHREADING COMPUTER SYSTEM Amultithreading computer system includesa configuration with a core configurable between a single thread (ST) mode and a multithreading (MT) mode. The ST mode addresses a primary thread and the MT mode addresses the primary thread and one or more secondary threads on shared resources of the core. A multithreading facility is configured to control utilization of the configuration to perform a method including disabling one or more secondary threads based on switching from MT mode to ST mode. A thread context of secondary threads is made unavailable to programs. Based on a last-set program-specified maximum thread-id indicating MT, the thread context is obtained by a) executing a set MT instruction to resume the MT mode, and b) based on being in the resumed MT mode, accessing the thread context.
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公开(公告)号：ZA201400731B
公开(公告)日：2015-10-28
申请号：ZA201400731
申请日：2014-01-30
Applicant: IBM
Inventor： ROGERS ROBERT , SCHMIDT DONALD WILLIAM , MULDER JAMES , PIERCE BERNARD , KUBALA JEFFREY PAUL , FARRELL MARK , GAINEY JR CHARLES
Abstract: A program (e.g., an operating system) is provided a warning that it has a grace period in which to perform a function, cleanup (e.g., complete, stop and/or move a dispatchable unit). The program is being warned, in one example, that it is losing access to its shared resources. For instance, in a virtual environment, a guest program is warned that it is about to lose its central processing unit resources, and therefore, it is to perform a function, such as cleanup.
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公开(公告)号：CA2940988A1
公开(公告)日：2015-10-01
申请号：CA2940988
申请日：2015-03-16
Applicant: IBM
Inventor： GREINER DAN , FARRELL MARK , OSISEK DAMIAN LEO , SCHMIDT DONALD WILLIAM , BUSABA FADI YUSUF , KUBALA JEFFREY PAUL , BRADBURY JONATHAN DAVID , HELLER LISA CRANTON , SLEGEL TIMOTHY , GAINEY CHARLES JR
IPC: G06F9/46
Abstract: THREAD CONTEXT RESTORATION IN A MULTITHREADING COMPUTER SYSTEM Amultithreading computer system includesa configuration with a core configurable between a single thread (ST) mode and a multithreading (MT) mode. The ST mode addresses a primary thread and the MT mode addresses the primary thread and one or more secondary threads on shared resources of the core. A multithreading facility is configured to control utilization of the configuration to perform a method including disabling one or more secondary threads based on switching from MT mode to ST mode. A thread context of secondary threads is made unavailable to programs. Based on a last-set program-specified maximum thread-id indicating MT, the thread context is obtained by a) executing a set MT instruction to resume the MT mode, and b) based on being in the resumed MT mode, accessing the thread context.
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公开(公告)号：CA2940891A1
公开(公告)日：2015-10-01
申请号：CA2940891
申请日：2015-03-06
Applicant: IBM
Inventor： HELLER LISA CRANTON , KUBALA JEFFREY PAUL , BUSABA FADI YUSUF , BRADBURY JONATHAN DAVID , FARRELL MARK , OSISEK DAMIAN LEO , GREINER DAN , SLEGEL TIMOTHY , SCHMIDT DONALD WILLIAM , GAINEY CHARLES , JACOBI CHRISTIAN
Abstract: Embodiments relate to multithreading in a computer. An aspect is a computer including a configuration having a core which includes physical threads and is operable in single thread (ST) and multithreading (MT) modes. The computer also includes a host program configured to execute in the ST mode on the core to issue a start-virtual-execution (start-VE) instruction to dispatch a guest entity which includes a guest virtual machine (VM). The start-VE instruction is executed by the core and includes obtaining a state description, having a guest state, from a location specified by the start-VE instruction. The execution includes determining, based on the guest state, whether the guest entity includes a single guest thread or multiple guest threads, and starting the guest threads in the MT mode or ST mode based on the guest state and a determination of whether the guest entity includes a single guest thread or multiple guest threads.
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