摘要:
Without setting a specific function to a disk device and adding a specific function to disk access commands, a command control method for limiting an address range to be targets of the commands to be capable of optimizing an execution order of the commands, and a network storage system using it are provided. The network storage system, to which one or more disk devices are connected and which comprises a request receiving means for accepting a file access request from a client and a file system control means for translating this request into the disk access commands, is provided with the command controller for accepting the disk access commands translated by the file system control means, classifying the commands using information managed by the file system control means, and optimizing a delivery order of the commands for each of the classified commands.
摘要:
In a parallel processor system comprising a plurality of processor elements constituting a network, a source processor element wishing to broadcast data to a plurality of destination processor elements sends a broadcast request message containing the target data to a broadcast exchanger. The broadcast exchanger converts the received message into a broadcast message and sends it over the network to the destinations. A plurality of broadcast request messages, if transmitted parallelly to the broadcast exchanger, are serialized thereby so that only one broadcast message will be transmitted at a time over the network. This prevents deadlock from occurring between different broadcast messages. The routes for transmitting broadcast request messages and those for transmitting broadcast messages are arranged so as not to overlap with one another. This suppresses deadlock between any broadcast request message and broadcast message. The broadcast exchanger is replaced alternatively with one of the partial networks. These schemes all apply where long messages are transmitted through worm-hole routing.
摘要:
There is a need for providing the Xeon CPU with a two-level VM that is independent of VMM types and prevents the throughput from degrading when the OS operates the privilege register. A machine is provided with a processor and memory. The machine includes a first virtual machine manager for managing a virtual machine, a second virtual machine for managing an operating system, first management information, and second management information. The processor is provided with a register and a shadowing function. The machine uses a virtualization method. The first virtual machine manager detects a call from the second virtual machine manager. The first virtual machine manager enables the shadowing function when it is determined that an instruction for enabling the shadowing function caused the call.
摘要:
(1) A configuration management in a management server is carried out such that setting patterns regarding creation of plural types of virtual resources and setting patterns regarding connection between the plural types of virtual resources are extracted from setting information of network devices configuring a virtual network by using plural types of virtualization technologies, (2) an ID required for creating a virtual resource and a connection relation between virtual resources are extracted from the extracted setting pattern, (3) an element corresponding to a virtual resource or a connection between a pair of virtual resources is created by using information including the extracted ID, and (4) the elements created from setting information of individual devices are aggregated to thereby create logical topology information representing a topology of the virtual network.
摘要:
In a multi-tenancy information processing system, a necessary setting change item and a target NW device are specified at the time of changing a configuration of a virtual machine of a tenant. A management server 116 includes a device management table 352 for each tenant and each segment, in which an NW setting item set for a network (NW) device is stored for each of the NW devices corresponding to the segment of the tenant, in advance. The management server 116 receives a configuration change request including type information on a request representing addition, deletion, or movement of the virtual machine, an identifier of a target tenant, and an identifier of a target segment.
摘要:
A technology capable of achieving the LU migration in terms of a file system and a logical volume and the effective migration in a host computer which provides a file system function and a logical volume function is provided. A computer system has I/O access unification and management means that obtains RAID configuration information and RAID statistical information in a disk array system and manages an I/O access unified management table in which file system configuration information and logical volume configuration information managed by an OS are unified. Also, the computer system has migration volume deciding means that determines a migration method based on the I/O access unified management table, migration influence predicting means that obtains migration influence prediction information, and RAID linkage migration performing means.
摘要:
Each node includes a node controller for decoding the control information and the address information for the access request issued by a processor or an I/O device, generating, based on the result of decoding, the cache coherence control information indicating whether the cache coherence control is required or not, the node information and the unit information for the transfer destination, and adding these information to the access request. An intra-node connection circuit for connecting the units in the node controller holds the cache coherence control information, the node information and the unit information added to the access request. When the cache coherence control information indicates that the cache coherence control is not required and the node information indicates the local node, then the intra-node connection circuit transfers the access request not to the inter-node connection circuit inter-connecting the node but directly to the unit designated by the unit information.
摘要:
A parallel computer using a simply structured network which allows loads on message-transferring routes to be as equally distributed as possible and which eases possible conflict between different types of messages being transferred. Given a message to be transmitted, each processor (PE) on the network references a property setup table to determine property information depending on the message type and places the information into the message. For example, a route bit RB as the property information is set to "0" or "1" depending on whether the message is originated by the sending PE or is a message acknowledging the receipt of another message. According to the RB bit in the received message, a route instruction circuit in each exchange switch (EX) references a route instruction table to determine the message destination that depends on the receiving PE number designated by the message. Each EX has a plurality of virtual channel circuits. Each virtual channel circuit has a plurality of buffers assigned beforehand to different values of the RB bit within the message. The received message is placed into the buffer corresponding to the RB bit value of the message, whereby conflict between messages is minimized.
摘要:
In a step for bonding a color filter to a solid-state image sensor so as to provide a color-sensitive image sensor (to be referred to as "a color-image sensor" in this specification), a method for bonding the color filter to the image sensor with an adhesive which is curable by ultraviolet radiation and also the constructions of color filters and image sensors which can facilitate the bonding step. Further techniques for mass producing high-precision and high-quality solid-state color-image sensors, each of which is bonded with a color filter with a higher degree of accuracy in alignment and by a higher degree of adhesive strength, by carrying out the bonding step in an atmosphere containing oxygen so as to inhibit an adhesive squeezed out of the space between the image sensor and the color filter from being cured and subsequently facilitate the removal of uncured adhesive and by forming protective layers or films over the surfaces to be bonded of the image sensor and color filter prior to the bonding step so as to prevent these surfaces from being damaged during the bonding step.
摘要:
In a multi-tenancy information processing system, a necessary setting change item and a target NW device are specified at the time of changing a configuration of a virtual machine of a tenant. A management server 116 includes a device management table 352 for each tenant and each segment, in which an NW setting item set for a network (NW) device is stored for each of the NW devices corresponding to the segment of the tenant, in advance. The management server 116 receives a configuration change request including type information on a request representing addition, deletion, or movement of the virtual machine, an identifier of a target tenant, and an identifier of a target segment.