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    Performing arithmetic operations using both large and small floating point values
    11.
    发明专利
    Performing arithmetic operations using both large and small floating point values 未知

    公开(公告)号：GB2511986A

    公开(公告)日：2014-09-17

    申请号：GB201411244

    申请日：2012-11-21

    Applicant: IBM

    Inventor： STUECHELI JEFFREY A ,  RETTER ERIC EUGENE ,  RAJAMANI KARTHICK ,  MEALEY BRUCE ,  CARTER JOHN BRUCE

    IPC: G06F7/483 ,  G06F5/01

    Abstract: Mechanisms are provided for performing a floating point arithmetic operation in a data processing system. A plurality of floating point operands of the floating point arithmetic operation are received and bits in a mantissa of at least one floating point operand of the plurality of floating point operands are shifted. One or more bits of the mantissa that are shifted outside a range of bits of the mantissa of at least one floating point operand are stored and a vector value is generated based on the stored one or more bits of the mantissa that are shifted outside of the range of bits of the mantissa of the at least one floating point operand. A resultant value is generated for the floating point arithmetic operation based on the vector value and the plurality of floating point operands.

    Minimizing aggregate cooling and leakage power with fast convergence
    12.
    发明专利
    Minimizing aggregate cooling and leakage power with fast convergence 未知

    公开(公告)号：GB2509658A

    公开(公告)日：2014-07-09

    申请号：GB201407236

    申请日：2012-11-01

    Applicant: IBM

    Inventor： ALLEN-WARE MALCOLM SCOTT ,  CARTER JOHN BRUCE ,  HUANG WEI ,  LEFURGY CHARLES R ,  SILVA GUILLERMO J

    IPC: G05D23/00

    Abstract: A mechanism is provided for minimizing system power in the data processing system (300) with fast convergence. A current aggregate system power value is determined using a current thermal threshold value (320). For each potential thermal threshold value in a set of potential thermal threshold values (320), a determination is made as to whether there is a potential thermal threshold value (320) that results in a potential aggregate system power value that is lower than the current aggregate system power value (916). Responsive to identifying an optimal potential thermal threshold value from the set of potential thermal threshold values (320) that results in minimum aggregate system power value that is lower than the current aggregate system power value (924), the optimal potential thermal threshold value is set as a new thermal threshold value (926).

    Using hot and cold memory tiers to increase the memory capacity in power-constrained systems
    13.
    发明专利
    Using hot and cold memory tiers to increase the memory capacity in power-constrained systems 未知

    公开(公告)号：GB2497835A

    公开(公告)日：2013-06-26

    申请号：GB201219071

    申请日：2012-10-24

    Applicant: IBM

    Inventor： RAJAMANI KARTHICK ,  CARTER JOHN BRUCE ,  HUANG WEI ,  SUDAN KSHITIJ ,  RAWSON FREEMAN LEIGH III

    IPC: G06F1/32

    Abstract: Disclosed is a method, system, and computer program product that increases the capacity of a memory. The method uses an application executing on a host system, the memory includes a set of ranks. The memory is configured to form a cold tier and a hot tier, each tier including a subset of the ranks in the memory. When a memory access request is made a determination is made whether the page to which the memory access request is directed is located in the cold tier in the memory. If the requested page is located in the cold tier of the memory, the memory access request is throttled by delaying the processing of the memory access request. If the requested page is located in the hot tier the method may determine whether to delay the request, by determining if processing the request will exceed a power budget. The method may count the number of access requests to the pages to determine if the page should be moved between the tiers based on the exceeding of a count threshold.

    Erhöhen der Speicherkapazität in Systemen mit eingeschränkter elektischer Leistungsaufnahme
    14.
    发明专利
    Erhöhen der Speicherkapazität in Systemen mit eingeschränkter elektischer Leistungsaufnahme 未知

    公开(公告)号：DE102012219907A1

    公开(公告)日：2013-05-16

    申请号：DE102012219907

    申请日：2012-10-31

    Applicant: IBM

    Inventor： CARTER JOHN BRUCE ,  HUANG WEI ,  RAJAMANI KARTHICK ,  RAWSON III FREEMAN LEIGH ,  SUDAN KSHITIJ

    IPC: G11C8/00 ,  G06F9/50 ,  G06F12/02 ,  G06F13/12

    Abstract: In den veranschaulichenden Ausführungsformen werden ein Verfahren, System und Computerprogrammprodukt zum Erhöhen der Kapazität eines Speichers bereitgestellt. Unter Verwendung einer Anwendung, die unter Verwendung eines Prozessors ausgeführt wird, wobei der Speicher eine Reihe von Datenebenen aufweist, wird der Speicher derart konfiguriert, dass er eine inaktive Schicht und eine aktive Schicht bildet, wobei die inaktive Schicht eine erste Teilmenge von Datenebenen aus der Reihe von Datenebenen in dem Speicher aufweist, und die aktive Schicht eine zweite Teilmenge von Datenebenen aus der Reihe von Datenebenen in dem Speicher aufweist. Es wird ermittelt, ob sich eine Seite, an die eine Speicher-Zugriffsanforderung gerichtet ist, in der inaktiven Schicht in dem Speicher befindet. Als Reaktion darauf, dass sich die Seite in der inaktiven Schicht des Speichers befindet, wird die Verarbeitung der Speicher-Zugriffsanforderung durch Verarbeiten der Speicher-Zugriffsanforderung mit einer Verzögerung gedrosselt.

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