International Business Machines Corporation

Timothy R Marchini

Naresh Nayar

Richard Loise Arndt

James Anthony Pafumi

K Paul Muller

Kyle Alan Lucke

Carol B Hernandez

Scott J Hadderman

Katie L Pizzolato

Andrew H Vogel

Giles R Frazier

William Joseph Armstrong

Cathy May

Michael Joseph Corrigan

John Thomas O'Quin, Ii

Wan Lin Leung

Patrick M Gannon

Henry R Brandt

Disclosed is a computer implemented method, computer program product, and apparatus to establish at least one paging partition in a data processing system. The virtualization control point (VCP) reserves up to the subset of physical memory for use in the shared memory pool. The VCP configures at least one logical partition as a shared memory partition. The VCP assigns a paging partition to the shared memory pool. The VCP determines whether a user requests a redundant assignment of the paging partition to the shared memory pool. The VCP assigns a redundant paging partition to the shared memory pool, responsive to a determination that the user requests a redundant assignment. The VCP assigns a paging device to the shared memory pool. The hypervisor may transmit at least one paging request to a virtual asynchronous services interface configured to support a paging device stream.

Paging partition arbitration of paging devices to shared memory partitions

A modular refrigeration unit (MRU) health monitor includes a log data input configured to receive log data from an MRU, the log data comprising a plurality of datapoints, each of the plurality of datapoints comprising a position of a control valve of the MRU and a corresponding time; and MRU health monitoring logic configured to determine a plurality of MRU parameters from log data received on the log data input; determine a plurality of MRU health flags based on the MRU parameters; add the plurality of MRU health flags to determine an MRU health score; determine whether the MRU health score is higher than a replacement threshold; and indicate replacement of the MRU in the event the MRU health score is higher than the replacement threshold.

Modular refrigeration unit health monitoring

A method for modular refrigeration unit (MRU) health monitoring includes receiving log data on a log data input from the MRU by a MRU health monitor, the log data comprising a plurality of datapoints, each of the plurality of datapoints comprising a position of a control valve of the MRU and a corresponding time; determining by the MRU health monitor a plurality of MRU parameters from the log data; determining a plurality of MRU health flags based on the MRU parameters; adding the plurality of MRU health flags to determine an MRU health score; determining whether the MRU health score is higher than a replacement threshold; and indicating replacement of the MRU in the event the MRU health score is higher than the replacement threshold.

A computer implemented method to establish at least one paging partition in a data processing system. The virtualization control point (VCP) reserves up to the subset of physical memory for use in the shared memory pool. The VCP configures at least one logical partition as a shared memory partition. The VCP assigns a paging partition to the shared memory pool. The VCP determines whether a user requests a redundant assignment of the paging partition to the shared memory pool. The VCP assigns a redundant paging partition to the shared memory pool, responsive to a determination that the user requests a redundant assignment. The VCP assigns a paging device to the shared memory pool. The hypervisor may transmit at least one paging request to a virtual asynchronous services interface configured to support a paging device stream.

A method and system for selecting the architecture level to which a processor appears to conform within a computing environment when executing specific logical partitions or programs and performing migration among different levels of processor architecture. The method utilizes a 'processor compatibility register' (PCR) that controls the level of the architecture that the processor appears to support. In one embodiment, the PCR is accessible only to super-privileged software. The super-privileged software sets bits in the PCR that specify the architecture level that the processor is to appear to support so that when the program runs on the processor, the processor behaves in accordance with the architecture level for which the program was designed.

Method and apparatus for selecting the architecture level to which a processor appears to conform

A unique high-speed hardware arrangement for generating double-level address translations in combination a translation look-aside buffer (TLB) structure that can store and lookup intermediate translations during a double-level translation. The hardware proceeds to the completion of a double-level translation without having to backup its operation, although an intermediate TLB miss is encountered, without danger of CPU deadlock occurring. The hardware arrangement also performs all single-level address translations required by the system.

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Hyde Park, NY, United States of America

Timothy R Marchini