Fujitsu Corporation

Anest Iwata Corporation

Takahiro Kagami

Tsuyoshi Hashimoto

Shiro Tanigawa

A control apparatus includes a memory and a processor coupled to the memory, wherein the processor is configured to decide whether or not, in a system in which an occupation period of a job is allocated to each of a plurality of calculators so as to operate each of the plurality of calculators, there is a standby job that is to occupy a number of calculators equal to or smaller than a number of one or more end jobs that end in a middle of a first period which is occupied by one or more calculators from among the plurality of calculators, within a second period having a time length equal to or smaller than a remaining time period of the first period, and switch, when deciding that there is no standby job, a mode of the one or more calculators to a power saving mode.

Control apparatus, control method and recording medium on which control program is recorded

A parallel computing control apparatus determines, among a plurality of nodes, relay nodes located on a path from a first node allocated to a job to a second node. The parallel computing control apparatus obtains an index value indicating a use state of resources in the relay nodes. The parallel computing control apparatus calculates an estimated value of a transfer period taken to transfer data on the job from the first node to the second node, on the basis of the index value and the memory usage of the job.

Apparatus, system and method for estimating data transfer periods for job scheduling in parallel computing

In a pump chamber (), a male rotor () having claw portions and a female rotor () having recesses into which the claw portions enter are secured to rotating shafts (and), respectively. The female rotor is provided with hollows on an upstream side in the rotational direction of the female rotor relative to a plane L containing the rotating shafts. For the hollows, the disposed position, size and configuration are selected so that a compression pocket P and a discharge opening remain in communication with each other through the hollow throughout the time from when the compression pocket stops communicating with the discharge opening and separates from the discharge opening until the compression pocket gradually reduces to disappear, and so that the hollow stops communicating with the discharge opening at the same time as the compression pocket disappears.

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Yokohama, Japan

Takahiro Kagami