Fujitsu Corporation

Nicholas Wilson

James Alastair Southern

Jim Enright

Serban Georgescu

Peter Chow

David Snelling

Michael Li

James Alistair Southern

A controller to instruct execution in an environment of plural computing resources. The controller comprising: an information collecting unit to collect available resource information of computing resources available to execute an application indicating an amount and/or type of computing resource available in categories of computing resource; scalability information including an indication of application execution rate; and performance target information including an indication of performance targets. The controller further comprises: a configuration selection unit to select a configuration which will come closest to meeting, the performance targets; and an instructing unit to instruct the execution of the application using the selected configuration.

Application execution controller and application execution method

A synchronization method in a computer system with multiple cores, wherein a group of threads executes in parallel on a plurality of cores, the group of threads being synchronized using barrier synchronization in which each thread in the group waits for all the others at a barrier before progressing; the group of threads executes until a first thread reaches the barrier; the first thread enters a polling state, repeatedly checking for a release condition indicating the end of the barrier; subsequent threads to reach the barrier are moved to the core on which the first thread is executing; and other cores are powered down as the number of moved threads increases; and wherein when the first thread detects the release condition, the powered down cores are powered up and are available for use by the threads.

Synchronization method

A method of recovering application data from the memory of a failed node in a computer system comprising a plurality of nodes connected by an interconnect and of writing the application data to a replacement node; wherein a node of the computer system executes an application which creates application data storing the most recent state of the application in a node memory; the node fails; the node memory of the failed node is then controlled using a failover memory controller; and the failover memory controller copies the application data from the node memory of the failed node to a node memory of the replacement node over the interconnect.

Method of recovering application data from a memory of a failed node

A method of producing a benchmark application for testing input/output&#x2014;I/O&#x2014;settings of a computer application, the method comprising: compiling trace data relating to operations to be executed by the computer application; grouping the trace data into one or more phases, based on different stages in the execution of the computer application to which the operations relate; identifying patterns in the trace data and comparing the patterns; producing simplified trace data in which trace data having similar patterns are combined; and outputting a benchmark application which includes the simplified trace data and information indicating where the trace data have been combined.

Method and apparatus for producing a benchmark application for performance testing

Process migration method, computer system and intermediate computing resources

A method of job scheduling in a computing environment, comprising collecting historical job data related to job submissions received from a plurality of users, the historical job data comprising: resource request data indicative of resources requested by the user for executing a job, and resource usage data indicative of actual resources used to execute the job; calculating a believability score for each of the plurality of users based on a comparison between the job resource request data and the resource usage data related to job submissions received from the user, the believability score indicating a degree to which the user overestimates resources required to execute jobs; receiving a new job submission from a user, specifying a new job that is to be executed and resources requested by the user for executing the new job; and scheduling the new job for execution based on the believability score for the user.

Job scheduling based on historical job data

A method of porting source code for use in a runtime environment including a tool chain with a compiler for building the source code, in which the method comprises obtaining a source code fragment associated with a build error during the source code build in the runtime environment; creating a signature of the source code fragment; automatically comparing the signature with entries in an error database constructed from a history of previous build errors in the runtime environment and their fixes in the form of source code and/or tool chain modifications; using the comparison to find one or more similar previous build errors to the build error and thus to identify one or more of the source code and/or tool chain modifications as candidate solutions to the build error; compiling the source code with each of the candidate source code and/or tool chain modifications in turn until the source code compiles without reproducing the build error; and storing the build error in the error database and storing the modification with which the source code compiles without reproducing the build error as its fix.

Growing community of inventors

Middlesex, United Kingdom

Nicholas Wilson