公开(公告)号：US20210067449A1

公开(公告)日：2021-03-04

申请号：US16553511

申请日：2019-08-28

Applicant: Nvidia Corporation

Inventor： Glenn Dearth ,  Mark Hummel ,  Jonathan Owen ,  Mike Osborn ,  John Wortman ,  Rich Reeves

IPC: H04L12/801 ,  H04L12/947 ,  H04L12/743 ,  H04L7/00

Abstract: An endpoint in a network may make posted or non-posted write requests to another endpoint in the network. For a non-posted write request, the target endpoint provides a response to the requesting endpoint indicating that the write request has been serviced. For a posted write request, the target endpoint does not provide such an acknowledgment. Hence, posted write requests have lower overhead, but they suffer from potential synchronization and resiliency issues. While non-posted write requests do not have those issues, they cause increased load on the network because such requests require the target endpoint to acknowledge each write request. Introduced herein is a network operation technique that uses non-posted transactions while maintaining a load overhead of the network as a manageable level. The introduced technique reduces the load overhead of the non-posted write requests by collapsing and reducing a number of the responses.

公开(公告)号：US20170235690A1

公开(公告)日：2017-08-17

申请号：US15043671

申请日：2016-02-15

Applicant: Nvidia Corporation

Inventor： Mike Osborn ,  Mark Hummel ,  Jonathan Owen ,  Samuel Hammond Duncan

IPC: G06F13/28 ,  G06F13/40

CPC classification number: G06F13/28 ,  G06F13/32 ,  G06F13/4027

Abstract: Remotely synchronizing data communicated in an electronic computing system. Ordered writing of a data set of discrete data packets (data) and a following associated semaphore packet (semaphore) from a source electronic device (source) to a bridge interface device (bridge). Relaxed writing of the data set from the bridge to discrete target memory addresses (targets) of a data-consuming electronic device (consumer), wherein the order of the data and the semaphore written to the targets is different than the order of the data and semaphore written with the ordered writing. Monitoring, by the consumer, the relaxed writing of the semaphore to one of the targets. Issuing a synchronization command to the bridge upon detection of the semaphore having been written to the one target. Sending a synchronization confirmation reply from the bridge after all of the data has been written to the targets.

公开(公告)号：US20240406154A1

公开(公告)日：2024-12-05

申请号：US18528603

申请日：2023-12-04

Applicant: NVIDIA Corporation

Inventor： Miriam Menes ,  Naveen Cherukuri ,  Ahmad Atamli ,  Uria Basher ,  Mike Osborn ,  Mark Hummel ,  Liron Mula

IPC: H04L9/40

Abstract: Technologies for encrypting communication links between devices are described. A method includes generating a first initialization vector (IV), from a first subspace of IVs, for a first cryptographic ordered flow, and a second IV, from a second subspace of IVs that are mutually exclusive from the first subspace. The first and second cryptographic ordered flows share a key to secure multipath routing in a fabric between devices. The method sends, to the second device, a first packet for the first cryptographic ordered flow and a second packet for the second cryptographic ordered flow. The first packet includes a first security tag with the first IV and a first payload encrypted using the first IV and a first key. The second packet includes a second security tag with the second IV and a second payload encrypted using the second IV and a second key.

公开(公告)号：US11038800B2

公开(公告)日：2021-06-15

申请号：US16553511

申请日：2019-08-28

Applicant: Nvidia Corporation

Inventor： Glenn Dearth ,  Mark Hummel ,  Jonathan Owen ,  Mike Osborn ,  John Wortman ,  Rich Reeves

IPC: H04L12/801 ,  H04L7/00 ,  H04L12/743 ,  H04L12/947 ,  G06F13/16 ,  G06F13/30 ,  G06F13/42

Abstract: An endpoint in a network may make posted or non-posted write requests to another endpoint in the network. For a non-posted write request, the target endpoint provides a response to the requesting endpoint indicating that the write request has been serviced. For a posted write request, the target endpoint does not provide such an acknowledgment. Hence, posted write requests have lower overhead, but they suffer from potential synchronization and resiliency issues. While non-posted write requests do not have those issues, they cause increased load on the network because such requests require the target endpoint to acknowledge each write request. Introduced herein is a network operation technique that uses non-posted transactions while maintaining a load overhead of the network as a manageable level. The introduced technique reduces the load overhead of the non-posted write requests by collapsing and reducing a number of the responses.

公开(公告)号：US10097203B2

公开(公告)日：2018-10-09

申请号：US14939813

申请日：2015-11-12

Applicant: Nvidia Corporation

Inventor： Eric Tyson ,  Stephen D. Glaser ,  Mike Osborn ,  Mark Hummel

IPC: H03M13/09 ,  G06F11/10 ,  H04L1/00

Abstract: A CRC generator, a method for computing a CRC of a data packet, and an electronic system, such as a circuit board, are disclosed herein. In one embodiment the method is for computing the CRC of a data packet to be transmitted on a serial communications link having multiple lanes. In one embodiment, the CRC generator includes: (1) a CRC calculator configured to define a CRC calculation of a data packet in sequential order and perform parallelized computations, according to the sequential order and the multiple lanes, to generate sub-CRC values and (2) combination circuitry configured to combine the sub-CRC values to provide the CRC value for the packet.

公开(公告)号：US09858221B2

公开(公告)日：2018-01-02

申请号：US15043671

申请日：2016-02-15

Applicant: Nvidia Corporation

Inventor： Mike Osborn ,  Mark Hummel ,  Jonathan Owen ,  Samuel Hammond Duncan

IPC: G06F13/28 ,  G06F13/40 ,  G06F13/32

CPC classification number: G06F13/28 ,  G06F13/32 ,  G06F13/4027

Abstract: Remotely synchronizing data communicated in an electronic computing system. Ordered writing of a data set of discrete data packets (data) and a following associated semaphore packet (semaphore) from a source electronic device (source) to a bridge interface device (bridge). Relaxed writing of the data set from the bridge to discrete target memory addresses (targets) of a data-consuming electronic device (consumer), wherein the order of the data and the semaphore written to the targets is different than the order of the data and semaphore written with the ordered writing. Monitoring, by the consumer, the relaxed writing of the semaphore to one of the targets. Issuing a synchronization command to the bridge upon detection of the semaphore having been written to the one target. Sending a synchronization confirmation reply from the bridge after all of the data has been written to the targets.

公开(公告)号：US20170141794A1

公开(公告)日：2017-05-18

申请号：US14939813

申请日：2015-11-12

Applicant: Nvidia Corporation

Inventor： Eric Tyson ,  Stephen D. Glaser ,  Mike Osborn ,  Mark Hummel

IPC: H03M13/09 ,  G06F11/10

CPC classification number: H03M13/091 ,  G06F11/10 ,  G06F11/1004 ,  G06F11/1076 ,  H03M13/09 ,  H04L1/0061 ,  H04L1/0066

Abstract: A CRC generator, a method for computing a CRC of a data packet, and an electronic system, such as a circuit board, are disclosed herein. In one embodiment the method is for computing the CRC of a data packet to be transmitted on a serial communications link having multiple lanes. In one embodiment, the CRC generator includes: (1) a CRC calculator configured to define a CRC calculation of a data packet in sequential order and perform parallelized computations, according to the sequential order and the multiple lanes, to generate sub-CRC values and (2) combination circuitry configured to combine the sub-CRC values to provide the CRC value for the packet.