Abstract: An information processing device includes: a memory; and a processor coupled to the memory, the processor being configured to: sort stream data buffered in units of wraps of a sequential recording medium, in a column order and a time order of the stream data, as primary data to be written into a primary wrap of the sequential recording medium; and control writing of the sorted primary data into the primary wrap, wherein the sorting of the stream data is configured to sort secondary data to be written into a secondary wrap that follows the primary wrap, in a reverse order of the column order and in the time order, and wherein the controlling of the primary data is configured to control writing of the sorted secondary data into the secondary wrap.

Abstract: An information processing apparatus includes: calculation circuits that each executes deep learning; a shared memory that is shared by the calculation circuits; an access information memory that holds, for each of the calculation circuits, a write request for writing data generated in forward propagation processing by the calculation circuits to the shared memory, a read request for reading the data used in backward propagation processing by the calculation circuits from the shared memory, and a start time of backward propagation processing; and a processor that schedules data transfer between the calculation circuits and the shared memory based on the write request, the read request, and the start time of backward propagation processing such that the data is transferred from the shared memory to a calculation circuit that executes backward propagation processing by the start time of backward propagation processing, and accesses the shared memory based on a scheduling result.

Abstract: A storage control apparatus controls a tape apparatus including a plurality of tape drives. The storage control apparatus is configured to calculate, when causing the tape apparatus to execute write processing of dividing write data into a predetermined size and writing to a plurality of magnetic tapes, a write start position of the write data for each of the plurality of magnetic tapes where the write start position being different in each of the plurality of magnetic tapes and instruct the tape apparatus with the write start positions, and specify, when a reading range is designated, a read start position indicating a head of data in the reading range for each magnetic tape, and instruct the tape apparatus to read data in the reading range in an order from a magnetic tape of which the read start position is closer to an end of the magnetic tape.

Abstract: A storage control apparatus controls a tape apparatus including a plurality of tape drives. The storage control apparatus is configured to calculate, when causing the tape apparatus to execute write processing of dividing write data into a predetermined size and writing to a plurality of magnetic tapes, a write start position of the write data for each of the plurality of magnetic tapes where the write start position being different in each of the plurality of magnetic tapes and instruct the tape apparatus with the write start positions, and specify, when a reading range is designated, a read start position indicating a head of data in the reading range for each magnetic tape, and instruct the tape apparatus to read data in the reading range in an order from a magnetic tape of which the read start position is closer to an end of the magnetic tape.

Abstract: A control apparatus includes a processor configured to execute a procedure including: receiving, from a processing device, a reading request to read a first data piece among a plurality of data pieces included in a data set, the processing device executing a given process on each of the data pieces; reading the first data piece from a first storage tier among a plurality of hierarchical storage tiers having respective different reading capabilities; transmitting the read first data piece to the processing device in response to the reading request; measuring a processing time that the processing device takes to execute the given process; determine a storage tier that is to store the first data piece among the hierarchical storage tiers based on the reading capabilities and the measured processing time; and migrating the first data piece from the first storage tier to the determined storage tier.

Abstract: A non-transitory computer-readable recording medium stores an information processing program for causing a computer to execute processing including: classifying a database file into a plurality of datasets; generating an object on the basis of the classified dataset; and dividing and arranging each of the generated objects into layers that have different management conditions in an object storage.

Abstract: An information processing device includes: a plurality of threads, each of the plurality of threads being configured to process any of a plurality of tasks, the plurality of tasks being obtained by dividing a job; and a control circuit configured to execute processing when designating a next task in scheduling for the plurality of threads, the processing including inquiring of an assignment destination thread out of the plurality of threads as to whether the next task is to be completed by a scheduled time, and preferentially assigning a task supposed to be completed by the scheduled time in the assignment destination thread, as the next task from among the plurality of tasks.

Abstract: An information processing device includes: a memory; and a processor coupled to the memory, the processor being configured to: sort stream data buffered in units of wraps of a sequential recording medium, in a column order and a time order of the stream data, as primary data to be written into a primary wrap of the sequential recording medium; and control writing of the sorted primary data into the primary wrap, wherein the sorting of the stream data is configured to sort secondary data to be written into a secondary wrap that follows the primary wrap, in a reverse order of the column order and in the time order, and wherein the controlling of the primary data is configured to control writing of the sorted secondary data into the secondary wrap.

Abstract: An information processing apparatus includes: a memory; and a processor coupled to the memory and configured to: perform control to write original stream data to a first sequential recording medium; perform extraction processing of first data that is at least a part of the original stream data to be written to the first sequential recording medium and is to be used in a process for analysis; and perform control to write the first data to a second sequential recording medium.

Abstract: An information processing device includes; a plurality of threads, each of the plurality of threads being configured to process any of a plurality of tasks, the plurality of tasks being obtained by dividing a job; and a control circuit configured to execute processing when designating a next task in scheduling for the plurality of threads, the processing including inquiring of an assignment destination thread out of the plurality of threads as to whether the next task is to be completed by a scheduled time, and preferentially assigning a task supposed to be completed by the scheduled time in the assignment destination thread, as the next task from among the plurality of tasks.

Abstract: A control apparatus includes a processor configured to execute a procedure including: receiving, from a processing device, a reading request to read a first data piece among a plurality of data pieces included in a data set, the processing device executing a given process on each of the data pieces; reading the first data piece from a first storage tier among a plurality of hierarchical storage tiers having respective different reading capabilities; transmitting the read first data piece to the processing device in response to the reading request; measuring a processing time that the processing device takes to execute the given process; determine a storage tier that is to store the first data piece among the hierarchical storage tiers based on the reading capabilities and the measured processing time; and migrating the first data piece from the first storage tier to the determined storage tier.

Abstract: A data referring method executed by a processor included in an information processing apparatus coupled to a network, a first memory, and a second memory, the data referring method includes writing sequentially stream data passing through the network on the first memory; writing index data used for retrieving the stream data written on the first memory, on the first memory and the second memory; specifying a memory with a high read speed of the index data between the first memory and the second memory when reading the index data; and reading the index data from the specified memory.

Abstract: A device includes a processor that calculates, based on a position of a first region of a storage and a current position of a head in the storage, a first time for reading the first region associated with a first block that is among blocks, which are associated with regions obtained by dividing the storage region of the storage and to be accessed by the head and temporarily store data stored in the regions, and that is determined as a candidate to be deleted based on a method, calculates, based on a position of a second region and the current position of the head, a second time for reading the second region associated with a second block that is not determined as the candidate to be deleted based on the method, and deletes the second block when the processor determines that the second time is shorter than the first time.

Abstract: A storage apparatus acquires a data block including event data, time series information, first attribute information, and second attribute information. A first temporary accumulating unit and a second temporary accumulating unit temporarily accumulate the acquired data block in a first temporary storage unit and a second temporary storage unit, respectively. A first storing unit sorts a plurality of data blocks accumulated in the first temporary storage unit by the first attribute information and in a time series order identified from the time series information, and stores the sorted data blocks in a first storage unit. A second storing unit sorts a plurality of data blocks accumulated in the second temporary storage unit by the second attribute information and in a time series order identified from the time series information, and stores the sorted data blocks in a second storage unit.

Abstract: A first processor is configured to acquire measurement values of plural types of processing index values each indicating a state of processing loads on a storage control device, and plural types of access index values each indicating a state of loads of an access process performed for each of plural pieces of data stored in a first storage device. The first processor is configured to select a first access index value corresponding to a first processing index value when the acquired measurement value of the first processing index value exceeds a threshold value. The first processor is configured to move a first piece of data from the first storage device to a second storage device. The acquired measurement value of the first access index value for the first piece of data is higher than the acquired measurement value of the first access index value for any other piece of data.

Abstract: A storage apparatus includes a plurality of disk apparatuses, a memory including a read buffer, and a processor. The processor is configured to perform a writing process, the writing process including writing a plurality of pieces of divided data into the plurality of disk apparatuses, interrupt, when a readout request for reading out series of data from the plurality of disk apparatuses is received during execution of the writing process, the writing process to a predetermined number of disk apparatuses from among the plurality of disk apparatuses, read out the pieces of data requested by the readout request from the predetermined number of disk apparatuses, store the read out pieces of data into the read buffer, reconstruct the pieces of data stored in the read buffer back into the series of data requested by the readout request, and output the reconstructed data.

Abstract: A computer includes a memory that stores a program and received data; and a processor that executes an operation by executing the program stored in the memory, the operation including storing the received data into a first database having a first data structure in which reading is performed in a random access manner and writing is performed in a sequential access manner, when the received data is received from a second apparatus is as same as data stored in a first apparatus which has a failure, and copying the received data stored in the first database to a second database having a second data structure in which reading is performed in a sequential access manner and writing is performed in a random access manner.

Abstract: A transfer data block is selected, and a data file including the transfer data block is selected as a transfer data file. All the data blocks of the transfer data file are added to the transfer data block. When all the data files including each transfer data block is selected as a transfer data file, the transfer data block is selected as a deletion data block. When a total data amount of the deletion data block is larger than or equal to a predetermined target deletion data amount and a ratio of a total data amount of the transfer data block to the total data amount of the deletion data block is smaller than or equal to a predetermined value, the data file is transferred from a transfer source node to a transfer destination node. Accordingly, a storage can be used efficiently.

Abstract: A control device includes: a memory configured to store data to be stored in a plurality of server apparatuses; and a processor configured to receive, from each of the plurality of server apparatuses, load information indicating degree of load for reading target data from a storage area included in each of the plurality of server apparatuses, the target data being stored as a mirroring data in each of the plurality of server apparatuses at a different portion of each respective storage area, and determine, based on the load information received from each of the servers, a server apparatus, among the plurality of server apparatuses, from which the target data is read.

Abstract: A first information processing apparatus transmits a message storing a replica of data stored in the first information processing apparatus. The message has an unspecified destination. A first relay apparatus detects a second information processing apparatus provided in a network to which the first relay apparatus belongs. The first relay apparatus selects, as a transfer destination of the message, the second information processing apparatus or a second relay apparatus upon receiving the message. The first relay apparatus transfers the message to the selected transfer destination. The second information processing apparatus stores the replica therein upon receiving the message.