| 摘要 |
PROBLEM TO BE SOLVED: To perform parallel I/O with the expected degree of parallelism while temporarily securing the necessary number of I/O nodes even when a job for executing the parallel I/O does not own enough I/O nodes to obtain the expected degree of parallelism when the parallel I/O is started. SOLUTION: When starting the job, enough I/O nodes to perform parallel I/O with the expected degree of parallelism are not secured but only a small number of I/O nodes are secured. When the parallel I/O is started, nodes in short supply are selected by an I/O node security/release part for the parallel I/O and an I/O node group change part from the I/O node for a normal I/O group owned by the other job to temporarily snatch from another job being executed. Also, by an I/O node management table and a job management table, information about the I/O nodes snatched and that about the job from which nodes are snatched are simultaneously managed. For the purpose, I/O nodes are grouped. COPYRIGHT: (C)2011,JPO&INPIT
|
