公开(公告)号：US20190205205A1

公开(公告)日：2019-07-04

申请号：US15861381

申请日：2018-01-03

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Charles Johnson ,  Onkar Patil ,  Mesut Kuscu ,  Tuan Tran ,  Joseph Tucek ,  Harumi Kuno ,  Milind Chabbi ,  William Scherer

IPC: G06F11/08 ,  G06F12/06 ,  G06F12/02

Abstract: A high performance computing system including processing circuitry and a shared fabric memory is disclosed. The processing circuitry includes processors coupled to local storages. The shared fabric memory includes memory devices and is coupled to the processing circuitry. The shared fabric memory executes a first sweep of a stencil code by sequentially retrieving data stripes. Further, for each retrieved data stripe, a set of values of the retrieved data stripe are updated substantially simultaneously. For each retrieved data stripe, the updated set of values are stored in a free memory gap adjacent to the retrieved data stripe. For each retrieved data stripe, the free memory gap is advanced to an adjacent memory location. A sweep status indicator is incremented from the first sweep to a second sweep.

公开(公告)号：US10262035B2

公开(公告)日：2019-04-16

申请号：US15032977

申请日：2013-11-14

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Harumi Kuno ,  Goetz Graefe

IPC: G06F17/30

Abstract: Disclosed herein are a system, non transitory computer-readable medium, and method for estimating database performance. A request for an estimate of data is read. The estimate is calculated based at least partially on a node located in a data structure.

公开(公告)号：US20190087440A1

公开(公告)日：2019-03-21

申请号：US15705591

申请日：2017-09-15

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Charles Stuart Johnson ,  Harumi Kuno ,  James Park ,  Wey Yuan Guy ,  Milind M. Chabbi ,  Jacqueline Bredenberg ,  William N. Scherer ,  John L. Byrne ,  Joseph Tucek ,  Daniel Feldman

IPC: G06F17/30

Abstract: Examples disclosed herein relate to a hierarchical file system. The hierarchical file system may include a first and a second virtual file referencing a stored data set. The first virtual file may include a set of first keys of a first level of specificity, with each key of the set of first keys including a record locator. The second virtual file may include a set of second keys referencing the data set and of a second level of specificity. The set of first keys within the first virtual file is searched in response to a query for data of the data set. A key from the set of second keys is accessed via the record locator from a key from the set of first keys where the data of the data set was not identified by the set of first keys.

公开(公告)号：US10133617B2

公开(公告)日：2018-11-20

申请号：US15200384

申请日：2016-07-01

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Charles Stuart Johnson ,  Tuan Tran ,  Harumi Kuno

IPC: G06F11/00 ,  G06F11/07

Abstract: Examples include a system comprising a non-volatile memory, a cluster management interface, and a multi-node cluster. In some examples, the cluster management interface may monitor a system critical alert to determine if the system critical alert has been triggered. Based on the determination that it has been triggered, the cluster management interface may multicast a system failure notification. The multi-node cluster of the system has multiple nodes, each node connected to the non-volatile memory and having a processor and a processor cache. Each node of the multi-node cluster may determine if the system failure notification has been received and based on the determination that it has been received, each node may freeze execution of all processes on the process and flush the processor cache to the non-volatile memory.

公开(公告)号：US20180004590A1

公开(公告)日：2018-01-04

申请号：US15200384

申请日：2016-07-01

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Charles Stuart Johnson ,  Tuan Tran ,  Harumi Kuno

IPC: G06F11/07

CPC classification number: G06F11/0772 ,  G06F11/0709 ,  G06F11/0751 ,  G06F11/0784 ,  G06F11/1415 ,  G06F11/3055

Abstract: Examples include a system comprising a non-volatile memory, a cluster management interface, and a multi-node cluster. In some examples, the cluster management interface may monitor a system critical alert to determine if the system critical alert has been triggered. Based on the determination that it has been triggered, the cluster management interface may multicast a system failure notification. The multi-node cluster of the system has multiple nodes, each node connected to the non-volatile memory and having a processor and a processor cache. Each node of the multi-node cluster may determine if the system failure notification has been received and based on the determination that it has been received, each node may freeze execution of all processes on the process and flush the processor cache to the non-volatile memory.

公开(公告)号：US20170300412A1

公开(公告)日：2017-10-19

申请号：US15513407

申请日：2014-09-30

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Charles S. Johnson ,  Harumi Kuno ,  Goetz Graefe ,  Haris Volos ,  Mark Lillibridge ,  James Hyungsun Park ,  Wey Guy

IPC: G06F12/08 ,  G06F11/14 ,  G06F12/12

CPC classification number: G06F12/0804 ,  G06F11/1446 ,  G06F11/1474 ,  G06F12/0868 ,  G06F12/12 ,  G06F2201/80 ,  G06F2212/1016

Abstract: Systems and methods associated with page modification are disclosed. One example method may be embodied on a non-transitory computer-readable medium storing computer-executable instructions. The instructions, when executed by a computer, may cause the computer to fetch a page to a buffer pool in a memory. The page may be fetched from at least one of a log and a backup using single page recovery. The instructions may also cause the computer to store a modification of the page to the log. The modification may be stored to the log as a log entry. The instructions may also cause the computer to evict the page from memory when the page is replaced in the buffer pool. Page writes associated with the eviction may be elided.