International Business Machines Corporation

Kyung D Ryu

Bryan Savoye Rosenburg

Chen-Yong Cher

Yoonho Park

Carlos Henrique Andrade Costa

Richard Edwin Harper

Michael R Hines

Marcio Augusto Silva

Alper Buyuktosunoglu

Pradip Bose

Augusto J Vega

Dilma M Da Silva

Valentina Salapura

Ravi Shankar

David Carl Frank

David Breitgand

Jeffrey S Lucash

Dilma Menezes Da Silva

Thomas V Weaver

Amir Epstein

Alexander Glikson

Lisa F Spainhower

A method for managing a network queue memory includes receiving sensor information about the network queue memory, predicting a memory failure in the network queue memory based on the sensor information, and outputting a notification through a plurality of nodes forming a network and using the network queue memory, the notification configuring communications between the nodes.

Network resiliency through memory health monitoring and proactive management

A method is disclosed, as well as an associated apparatus and computer program product, for checkpointing using a plurality of communicatively coupled compute nodes. The method comprises acquiring health information for a first node of the plurality of compute nodes, and determining a first failure probability for the first node using the health information. The first failure probability corresponds to a predetermined time interval. The method further comprises selecting a second node of the plurality of compute nodes as a partner node for the first node. The second node has a second failure probability for the time interval. A composite failure probability of the first node and the second node is less than the first failure probability. The method further comprises copying checkpoint information from the first node to the partner node.

Checkpointing using compute node health information

A method for providing selective memory error protection responsive to a predictable failure notification associated with at least one portion of a memory in a computing system includes: obtaining an active error correcting code (ECC) configuration corresponding to the portion of the memory; determining whether the active ECC configuration is sufficient to correct at least one error in the portion of the memory affected by the predictable failure notification; when the active ECC configuration is insufficient to correct the error, determining whether data corruption can be tolerated by an application running on the computing system; when data corruption cannot be tolerated by the application, determining whether a stronger ECC level is available and, if a stronger ECC level is available, increasing a strength of the active ECC configuration; and when data corruption can be tolerated, performing page reassignment and aggregation of non-critical data.

Method and apparatus for selective and power-aware memory error protection and memory management

A method for selective duplication of subtasks in a high-performance computing system includes: monitoring a health status of one or more nodes in a high-performance computing system, where one or more subtasks of a parallel task execute on the one or more nodes; identifying one or more nodes as having a likelihood of failure which exceeds a first prescribed threshold; selectively duplicating the one or more subtasks that execute on the one or more nodes having a likelihood of failure which exceeds the first prescribed threshold; and notifying a messaging library that one or more subtasks were duplicated.

Methods, apparatus and system for selective duplication of subtasks

A method for providing dynamic resizing of at least one virtual machine in a cloud infrastructure includes steps of: obtaining a measure of resource usage for the virtual machine and/or application performance of an application running on the virtual machine; determining, as a function of prescribed rules relating to resource usage and the measure of resource usage and/or application performance, whether the virtual machine requires resizing; and resizing the virtual machine to dynamically change resource availability for the virtual machine so as to maintain resource usage and/or application performance within prescribed limits defined by the prescribed rules.

Dynamic virtual machine resizing in a cloud computing infrastructure

A method for providing notification of a predictable memory failure includes the steps of: obtaining information regarding at least one condition associated with a memory; calculating a memory failure probability as a function of the obtained information; calculating a failure probability threshold; and generating a signal when the memory failure probability exceeds the failure probability threshold, the signal being indicative of a predicted future memory failure.

Methods, apparatus and system for notification of predictable memory failure

A method for faulty memory utilization in a memory system includes: obtaining information regarding memory health status of at least one memory page in the memory system; determining an error tolerance of the memory page when the information regarding memory health status indicates that a failure is predicted to occur in an area of the memory system affecting the memory page; initiating a migration of data stored in the memory page when it is determined that the data stored in the memory page is non-error-tolerant; notifying at least one application regarding a predicted operating system failure and/or a predicted application failure when it is determined that data stored in the memory page is non-error-tolerant and cannot be migrated; and notifying at least one application regarding the memory failure predicted to occur when it is determined that data stored in the memory page is error-tolerant.

Method and apparatus for faulty memory utilization

Availability manager orchestration systems and methods and, particularly, an open resilience framework for simplified and coordinated orchestration of multiple availability managers.

Open resilience framework for simplified and coordinated orchestration of multiple availability managers

Methods and apparatus for recovery of virtual machine failure. A succession of data images is captured, with each of the data images comprising an operating system of the virtual machine. The data images are images of data elements chosen based at least in part on their suitability for virtual machine restoration. Upon detection of a virtual machine failure, an attempt is made to restore the virtual machine using the highest ranked. If the attempt fails, further attempts are made using lower ranked data images, until an attempt is successful or all available data images have been used.

Methods and apparatus for virtual machine recovery

According to one embodiment, a method for thread consolidation is provided for a system that includes an operating system and a multi-core processing chip in communication with an accelerator chip. The method includes running an application having software threads on the operating system, mapping the software threads to physical cores in the multi-core processing chip, identifying one or more idle hardware threads in the multi-core processing chip and identifying one or more idle accelerator units in the accelerator chip. The method also includes executing the software threads on the physical cores and the accelerator unit. The method also includes the controller module consolidating the software threads executing on the physical cores, resulting in one or more idle physical cores and a consolidated physical core. The method also includes the controller module activating a power savings mode for the one or more idle physical cores.

Thread consolidation in processor cores

System and method and computer program product implemented for a cloud computing infrastructure that allows a hypervisor to optimize resource allocation in a cloud computing environment by exploiting the application-level performance, O/S system performance, and hypervisor performance information through a reliable and efficient channel.

Resource management using reliable and efficient delivery of application performance information in a cloud computing system

An aspect of this invention is a method that includes evaluating a computing environment by performing auditing of a fault tolerance ability of the computing environment to tolerate each of a plurality of failure scenarios; constructing a failover plan for each of the plurality of scenarios; identifying one or more physical resource limitations which constrain the fault tolerance ability; and identifying one or more physical resources to be added to the computing environment to tolerate each of the plurality of failure scenarios.

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New City, NY, United States of America

Kyung D Ryu