公开(公告)号：US20230079278A1

公开(公告)日：2023-03-16

申请号：US17473643

申请日：2021-09-13

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Derek Alan Sherlock

IPC: H04L12/801 ,  H04L12/26

Abstract: A system for facilitating efficient progression management in a multi-source tracker of a responder device is provided. During operation, the system can maintain, in a memory device of the responder device, a first tracker for all requests and a second tracker for a privileged group of requests. The system can select a first group from a set of groups as the privileged group. If a request from a requesting device cannot be accepted into the first tracker, the system can determine whether the request belongs to the first group based on a header field of the request. If the request belongs to the first group, the system can select the request for accepting into the second tracker. Subsequently, when a respective request belonging to the first group has been accepted, the system can select a second group from the set of groups as the privileged group.

公开(公告)号：US11016683B2

公开(公告)日：2021-05-25

申请号：US16707946

申请日：2019-12-09

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Harvey Ray ,  Gary Gostin ,  Derek Alan Sherlock ,  Gregg B. Lesartre

IPC: G06F3/06 ,  G06F11/10 ,  G06F9/52

Abstract: According to an example, a lock may be requested by a first redundancy controller from a parity media controller to perform a first sequence that accesses multiple memory modules in a stripe. The lock may be acquired for the stripe so that the first sequence may be performed on the stripe. The lock may then be released from the stripe.

公开(公告)号：US10824465B2

公开(公告)日：2020-11-03

申请号：US15467560

申请日：2017-03-23

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Gregg B. Lesartre ,  Derek Alan Sherlock

IPC: G06F9/46

Abstract: A method may include receiving a first transaction request. The method may further include transmitting a retry response to the transaction request, which includes a first epoch identifier associated with a current epoch. The method may further include receiving a second transaction request, which includes a second epoch identifier associated with a previous epoch. The second transaction request may be fulfilled using a transaction resource reserved for the previous epoch.

公开(公告)号：US10402287B2

公开(公告)日：2019-09-03

申请号：US15500064

申请日：2015-01-30

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Derek Alan Sherlock ,  Harvey Ray ,  Chris Michael Brueggen

IPC: G06F11/00 ,  G06F11/20 ,  G06F11/10

Abstract: According to an example, data corruption and single point of failure is prevented in a fault-tolerant memory fabric with multiple redundancy controllers by granting, by a parity media controller, a lock of a stripe to a redundancy controller to perform a sequence on the stripe. The lock may be broken in response to determining a failure of the redundancy controller prior to completing the sequence. In response to breaking the lock, the parity cacheline of the stripe may be flagged as invalid. Also, a journal may be updated to document the breaking of the lock.

公开(公告)号：US10355978B2

公开(公告)日：2019-07-16

申请号：US15626983

申请日：2017-06-19

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Gregg B. Lesartre ,  Derek Alan Sherlock ,  Gary Gostin ,  Nicholas George McDonald ,  Alan Davis ,  Darel N. Emmot ,  John Kim

IPC: H04L12/26 ,  H04L12/823 ,  H04L12/841 ,  H04L12/733 ,  H04L12/721 ,  H04L29/08

Abstract: Example implementations relate to calculating a time to live (TTL). An example implementation includes receiving a transaction request containing a first time to live (TTL) from a requester. A second TTL for a transaction response may be computed, and a transaction response containing the second TTL may be transmitted.

公开(公告)号：US11909643B2

公开(公告)日：2024-02-20

申请号：US17473643

申请日：2021-09-13

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Derek Alan Sherlock

IPC: H04L47/12 ,  H04L43/0876 ,  H04L43/16

CPC classification number: H04L47/12 ,  H04L43/0876 ,  H04L43/16

Abstract: A system for facilitating efficient progression management in a multi-source tracker of a responder device is provided. During operation, the system can maintain, in a memory device of the responder device, a first tracker for all requests and a second tracker for a privileged group of requests. The system can select a first group from a set of groups as the privileged group. If a request from a requesting device cannot be accepted into the first tracker, the system can determine whether the request belongs to the first group based on a header field of the request. If the request belongs to the first group, the system can select the request for accepting into the second tracker. Subsequently, when a respective request belonging to the first group has been accepted, the system can select a second group from the set of groups as the privileged group.

公开(公告)号：US20230262001A1

公开(公告)日：2023-08-17

申请号：US17672481

申请日：2022-02-15

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Frank R. Dropps ,  Joseph G. Tietz ,  Derek Alan Sherlock

IPC: H04L47/2441 ,  H04L47/2483 ,  H04L47/10 ,  H04L47/52 ,  H04L47/78

CPC classification number: H04L47/2441 ,  H04L47/39 ,  H04L47/521 ,  H04L47/781 ,  H04L47/2483

Abstract: A system for facilitating enhanced virtual channel switching in a node of a distributed computing environment is provided. During operation, the system can allocate flow control credits for a first virtual channel to an upstream node in the distributed computing environment. The system can receive, via a message path comprising the upstream node, a message on the first virtual channel based on the allocated flow control credits. The system can then store the message in a queue associated with an input port and determine whether the message is a candidate for changing the first virtual channel at the node based on a mapping rule associated with the input port. If the message is a candidate, the system can associate the message with a second virtual channel indicated in the mapping rule in the queue. Subsequently, the system can send the message from the queue on the second virtual channel.

公开(公告)号：US11314449B2

公开(公告)日：2022-04-26

申请号：US15929725

申请日：2020-05-18

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Derek Alan Sherlock

IPC: G06F3/06 ,  G06F13/16 ,  G06F12/02

Abstract: In some examples, a tracker receives a write request that is acknowledged upon receipt by a destination media controller without waiting for achievement of persistence of write data associated with the write request. The tracker adds an identifier of the destination media controller to a tracking structure in response to the identifier not already being present in the tracking structure. The tracker sends a request to persist write operations to media controllers identified by the tracking structure.

公开(公告)号：US10664410B2

公开(公告)日：2020-05-26

申请号：US15735163

申请日：2015-06-18

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Gregg B Lesartre ,  Derek Alan Sherlock ,  Russ W Herrell

IPC: G06F12/00 ,  G06F12/1045 ,  G06F12/14 ,  G06F12/1027 ,  G06F13/16 ,  G06F9/50 ,  G06F21/62 ,  G06F9/30

Abstract: In example implementations, mapping fields and respective operation fields may be stored in a translation lookaside buffer (TLB) of a central processing unit (CPU) that is communicatively coupled to a storage volume. The operation fields may be populated based on processes, running on the CPU, corresponding to the respective mapping fields. In response to a storage volume access request generated by one of the processes, and based on contents of one of the mapping fields that matches the storage volume access request, a memory address corresponding to a memory location in the storage volume may be identified. A translated address based on the identified memory address, and contents of the respective operation field, may be transmitted to a media controller communicatively coupled to the CPU and the storage volume.

公开(公告)号：US20190179541A1

公开(公告)日：2019-06-13

申请号：US16274189

申请日：2019-02-12

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Derek Alan Sherlock ,  Shawn Walker

IPC: G06F3/06

CPC classification number: G06F3/0613 ,  G06F3/0604 ,  G06F3/0652 ,  G06F3/0658 ,  G06F3/0659 ,  G06F3/067 ,  G06F3/0685

Abstract: A system comprises a processor, a memory fabric, and a fabric bridge coupled to the memory fabric and the processor. The fabric bridge may receive, from the processor a first eviction request comprising first eviction data, transmit, to the processor, a message indicating the fabric bridge has accepted the first eviction request, transmit a first write comprising the first eviction data to the fabric, receive, from the processor, a second eviction request comprising second eviction data, and transmit a second write comprising the second eviction data to the fabric. Responsive to transmitting the second write request, the fabric bridge may transmit, to the processor, a message indicating the fabric bridge accepted the second eviction request, determine that the first write and the second write have persisted, and transmit, to the processor, a notification to the processor responsive to determining that the first write and the second write have persisted.