International Business Machines Corporation

Mitsubishi Electric Corporation

Nec Corporation

Globalfoundries Inc.

Seiko Instruments Inc

Ebara Corporation

Koichi Masuda

Takahiro Tsuda

Norie Iwasaki

Sosuke Matsui

Kousei Kawamura

Joseph M Swingler

Katsuyoshi Katori

Takeshi Nohta

Yutaka Oishi

Tomokazu Nakamura

Shinsuke Mitsuma

Tadaaki Minoura

Takeshi Sohda

Gregory Tad Kishi

Eiji Tosaka

Hiroki Muraoka

Tetsuo Yamashita

Mituharu Tabata

Cheryl Marie Friauf

Yuuji Kibuse

Katja I Denefleh

Ryohta Kawase

Yuki Asakura

Jun Tanaka

Noboru Suzuki

Yasutaka Shimizu

Naoki Imai

Duke Andy Lee

Gary Anna

Takeo Saito

Yuichi Fuchu

Tomohiro Hieda

Kazuya Okada

Yutaka Niida

Shuichi Ogawa

Sakae Kosanda

Seiichi Tsuda

Shoji Izumi

An object is to provide a technique capable of improving the power efficiency of a semiconductor device. The semiconductor device includes first to sixth parallel connection bodies, each including a semiconductor switching element and a diode connected in antiparallel to the semiconductor switching element. At least one of the voltage drops of the second parallel connection body and the third parallel connection body is smaller than a voltage drop of at least one of the first parallel connection body, the fourth parallel connection body, the fifth parallel connection body, and the sixth parallel connection body.

Semiconductor device, semiconductor module, and power conversion apparatus

According to the present disclosure, a bidirectional switch circuit includes a first semiconductor device including a first backside electrode electrically connected to a first pattern and a first upper surface electrode, a second semiconductor device including a second backside electrode electrically connected to a second pattern and a second upper surface electrode, a first diode including a first cathode electrode electrically connected to the first pattern and a first anode electrode, a second diode including a second cathode electrode electrically connected to the first pattern and a second anode electrode, first wiring electrically connecting the first upper surface electrode and the second anode electrode and second wiring electrically connecting the second upper surface electrode and the first anode electrode, wherein the first upper surface electrode, the second upper surface electrode, the first anode electrode and the second anode electrode are electrically connected to each other.

Bidirectional switch circuit and power conversion device

A vector load instruction generating unit of a compile device generates an instruction to load a 'first group of data units', which is used as an element A[i] in iterative calculation processing, from a memory into a first vector register in a state of being packed in units of 1-word. Each data unit is (1/2)word. The vector load instruction generating unit generates an instruction to load a second group of data units, which is used as an element [i+2] into a second vector register. A vector shift double instruction generating unit generates an instruction to cause a part of a data string, which is obtained by shifting data of the first vector Register and the second register by (1/2)word as a series of data string, to be stored in a third vector register in a state of being packed in units of 1-word.

Compile device, compile method, and non-transitory computer readable medium for increasing a speed of a program

A data storage change is received for a piece of data, wherein the data storage change is from a first location to a second location. Two or more possible paths to perform the data storage change are determined. A plurality of weights for each path of the two or more paths is determined. A weighted transfer time for each path of the two or more paths is determined.

Cloud data migration

A method, computer system, and a computer program product for objective-based compression level change is provided. The present invention may include storing a volume in a storage device, wherein the stored volume is compressed using an initial compression level. The present invention may also include checking a last access time of the stored volume in the storage device at a regular interval. The present invention may further include, in response to determining, based on the checked last access time, that the stored volume is not accessed at the regular interval, recompressing the stored volume in the storage device using a higher compression level, wherein the higher compression level includes a higher compression ratio than a compression ratio associated with the initial compression level.

Automatic objective-based compression level change for individual clusters

A semiconductor device includes a semiconductor element, a base plate, and a plurality of contact materials. The base plate has a front surface holding the semiconductor element and a rear surface to which a cooling body to cool the semiconductor element is attachable. The plurality of contact materials are discretely arranged on the rear surface of the base plate. The plurality of contact materials are materials for bridging a gap on a heat dissipation path between the base plate and the cooling body. The plurality of contact materials each have a volume based on a bowed shape of the rear surface of the base plate. From among the plurality of contact materials, a contact material at a concave of the bowed shape has a greater volume than a contact material at a convex of the bowed shape.

Semiconductor device and semiconductor device manufacturing method

Embodiments are provided for reducing data using a plurality of compression operations in a computing storage environment. A speed of data writing to a virtual tape device and an availability of one or more processor devices for the virtual tape device may be monitored. One or more requests may be received for writing data to the virtual tape device. Data to be written to the virtual tape device, corresponding to a selected number of the one or more requests for writing the data, may be compressed according to both the speed of data writing to the virtual tape device and the availability of one or more processor devices for the virtual tape device. The compressed data may be stored in the virtual tape device in record units. Non-compressed data may be compressed in the virtual tape device at a subsequent period of time (e.g., future time period).

Reducing data using a plurality of compression operations in a virtual tape library

An embodiment of the invention may include a method, computer program product and system for saving data received from a host computing device to a storage system. The storage system includes at least one processor and at least one storage. An embodiment may include storing the received data to the storage on a record basis. A record includes a record header including information indicative of an implemented compression method of the record. An embodiment may include monitoring a processing load of the at least one processor. In response to the processing load being less than a predetermined level, an embodiment may include further compressing the record utilizing a high-ratio compression method based on the record requiring further compression. An embodiment may include updating the record header information to reflect details of the utilized a high-ratio compression method. An embodiment may include storing the further compressed record to the storage.

Data compression utilizing low-ratio compression and delayed high-ratio compression

A computer-implemented method, according to one embodiment, includes: receiving a volume at a first cluster in a first tier of a tiered data storage system. The first tier includes of a plurality of clusters, and the first cluster is coupled to a secondary storage in a second tier. A determination is made as to whether any clusters in the first tier are designated as copy target locations for the volume. In response to determining that one or more of the clusters in the first tier are designated as a copy target location, for each of the one or more clusters designated as a copy target location: a determination is made as to whether the given cluster is coupled to the secondary storage. Moreover, in response to determining that the given cluster is not coupled to the secondary storage, a copy of the volume is sent to the given cluster.

Reducing data replications among storage locations

A computer-implemented method for maintaining a storage volume in a virtual tape system includes writing one or more logical volumes associated with a first category and one or more logical volumes associated with a second category to a primary storage in a virtual tape system. The computer-implemented method further includes performing a first automatic removal process in order to free up space on the primary storage, wherein the first automatic removal process removes logical volumes associated with the first category in priority to logical volumes associated with the second category. The computer-implemented method further includes performing a second automatic removal process, wherein the second automatic removal process dynamically alters the priority of the first automatic removal process such that one or more virtual volumes associated with the second category are removed in priority to one or more virtual volumes associated with the first category.

Accelerated data removal in hierarchical storage environments

A dynamic premigration protocol is implemented in response to a secondary tier returning to an operational state and an amount of data associated with a premigration queue of a primary tier exceeding a first threshold. The dynamic premigration protocol can comprise at least a temporary premigration throttling level. An original premigration protocol is implemented in response to an amount of data associated with the premigration queue decreasing below the first threshold.

Dynamic premigration throttling for tiered storage

A storage system receives one or more records from a host system. The records are compressed in a first compression format that is native to the host system. The storage system identifies an incompatibility between the first compression format and a first operation of the storage system. In response to the identified incompatibility, the storage system decompresses the received records. The decompression is based on the first compression format. The storage system compresses the decompressed records in a second compression format. The storage system stores the secondarily compressed records onto a storage medium.

Reading and writing compressed data using long-term storage

A semiconductor apparatus includes: an insulating substrate including an insulating layer having first and second main surfaces, a metal plate on the first main surface, and first to fourth conductors on the second main surface; a semiconductor device including a rear electrode electrically connected to the first conductor and a front electrode electrically connected to the second conductor; a temperature detection device including a first electrode electrically connected to the third conductor and a second electrode electrically connected to the fourth conductor; a first terminal electrically connected to the third conductor; a second terminal positioned so as to be wire-connectable to the fourth conductor; and a third terminal electrically connected to the second conductor, wherein the fourth conductor is positioned so as to be wire-connectable to the second conductor.

Semiconductor apparatus

A computer-implemented method, according to one embodiment, includes assigning one or more first-type tape cartridges to an upper tape layer of a hierarchical storage management system, assigning one or more second-type tape cartridges to a lower tape layer of the hierarchical storage management system, and moving, to the lower tape layer, data having lower access frequency and recorded in the first-type tape cartridge assigned to the upper tape layer. A length of a tape included in the second-type tape cartridge is longer than a length of a tape included in the first-type tape cartridge.

Minimizing seek times in a hierarchical storage management (HSM) system

Embodiments provide a method, a system, and a computer program product for performing copy operations of one or more data units in a hierarchical storage management (HSM) system. The HSM system includes an upper layer and a lower layer. The upper layer includes multiple storage nodes having a grid configuration. The method comprises scheduling a copy operations of multiple data units each of which is stored in at least one of the multiple storage nodes such that loads on the copy operations are distributed among the multiple storage nodes in which the multiple data units are stored and copying the multiple data units to the lower layer in accordance with the scheduling.

Growing community of inventors

Tokyo, Japan

Koichi Masuda