System and method for supporting target groups for congestion control in a private fabric in a high performance computing environment

Patent metadata

Field	Value
Publication number	US-12489718-B2
Application number	US-202318493541-A
Country	US
Kind code	B2
Filing date	Oct 24, 2023
Priority date	Nov 19, 2019
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

Systems and methods for supporting target groups for congestion control in a private fabric in a high performance computing environment. An exemplary method can provide, at one or more microprocessors, a first subnet, the first subnet comprising a plurality of switches, a plurality of host channel adapters, and a plurality of end nodes, including a plurality of virtual machines. The method can define a target group on one of an inter-switch link or at a port of a switch of the plurality of switches, wherein the target group defines a bandwidth limit on the at least one of an inter-switch link between two switches of the plurality of switches or at a port of a switch of the plurality of switches. The method can provide a target group repository stored in a memory of the host channel adapter where the defined target group in the target group repository is recorded.

First claim

What is claimed is:

1 . A system for providing congestion control in a high performance computing environment, comprising:
a computer comprising one or more microprocessors and a memory; wherein the one or more microprocessors perform a method comprising:
defining a target group within a subnet, the target group being defined at a link of the subnet, the target group defining a bandwidth restriction;
directing two or more flows within the subnet, each of the two or more flows utilizing the link at which the target group is defined;
based upon the defined bandwidth restriction of the target group, limiting a flow rate for each of the two or more flows; and
defining a second target group within a subnet, the second target group being defined at a second link of the subnet, the second target group defining a second bandwidth restriction;
wherein the two or more flows are directed on a route within the subnet, the route traversing at least the link at which the target group is defined and the second link at which the second target group is defined; wherein the target group and the second target group together comprise a hierarchical target group comprising a rate restriction comprising the bandwidth restriction and the second bandwidth restriction.

2 . The system of claim 1 ,
wherein a combined flow rate for the two or more flows is less than or equal to the defined bandwidth restriction.

3 . The system of claim 2 ,
wherein the flow rate for each of the two or more flows is limited based upon a respective priority level of each of the two or more flows.

4 . The system of claim 3 ,
wherein the respective priority level of each of the two or more flows comprises at least one of a quality of service level or a service level agreement.

5 . The system of claim 1 , the method further comprising:
querying, by a node of the subnet, the target group to determine the defined bandwidth restriction; and wherein the node of the subnet limits the flow rate of at least one of the two or more flows.

6 . The system of claim 5 ,
wherein the node of the subnet limits the flow rate of the at least one of the two or more flows via a rate restriction component of the node.

7 . A method for providing congestion control in a high performance computing environment, comprising:
providing a computer comprising one or more microprocessors and a memory; defining a target group within a subnet, the target group being defined at a link of the subnet, the target group defining a bandwidth restriction; directing two or more flows within the subnet, each of the two or more flows utilizing the link at which the target group is defined; based upon the defined bandwidth restriction of the target group, limiting a flow rate for each of the two or more flows; and defining a second target group within a subnet, the second target group being defined at a second link of the subnet, the target group defining a second bandwidth restriction; wherein the two or more flows are directed on a route within the subnet, the route traversing at least the link at which the target group is defined and the second link at which the second target group is defined; and wherein the target group and the second target group together comprise a hierarchical target group comprised a rate restriction comprising the bandwidth restriction and the second bandwidth restriction.

8 . The method of claim 7 ,
wherein a combined flow rate for the two or more flows is less than or equal to the defined bandwidth restriction.

9 . The method of claim 8 ,
wherein the flow rate for each of the two or more flows is limited based upon a respective priority level of each of the two or more flows.

10 . The method of claim 9 ,
wherein the respective priority level of each of the two or more flows comprises at least one of a quality of service level or a service level agreement.

11 . The method of claim 7 , further comprising:
querying, by a node of the subnet, the target group to determine the defined bandwidth restriction; wherein the node of the subnet limits the flow rate of at least one of the two or more flows.

12 . The method of claim 11 ,
wherein the node of the subnet limits the flow rate of the at least one of the two or more flows via a rate restriction component of the node.

13 . A non-transitory computer readable storage medium having instructions thereon for providing congestion control in a high performance computing environment, which when read and executed cause a computer to perform steps comprising:
defining a target group within a subnet, the target group being defined at a link of the subnet, the target group defining a bandwidth restriction; directing two or more flows within the subnet, each of the two or more flows utilizing the link at which the target group is defined; based upon the defined bandwidth restriction of the target group, limiting a flow rate for each of the two or more flows; and defining a second target group within a subnet, the second target group being defined at a second link of the subnet, the target group defining a second bandwidth restriction; wherein the two or more flows are directed on a route within the subnet, the route traversing at least the link at which the target group is defined and the second link at which the second target group is defined; and wherein the target group and the second target group together comprise a hierarchical target group comprised a rate restriction comprising the bandwidth restriction and the second bandwidth restriction; wherein the computer comprises one or more microprocessors.

14 . The non-transitory computer readable storage medium of claim 13 ,
wherein a combined flow rate for the two or more flows is less than or equal to the defined bandwidth restriction.

15 . The non-transitory computer readable storage medium of claim 14 ,
wherein the flow rate for each of the two or more flows is limited based upon a respective priority level of each of the two or more flows.

16 . The non-transitory computer readable storage medium of claim 15 ,
wherein the respective priority level of each of the two or more flows comprises at least one of a quality of service level or a service level agreement.

17 . The non-transitory computer readable storage medium of claim 13 , the steps further comprising:
querying, by a node of the subnet, the target group to determine the defined bandwidth restriction; wherein the node of the subnet limits the flow rate of at least one of the two or more flows.

18 . The non-transitory computer readable storage medium of claim 17 ,
wherein the node of the subnet limits the flow rate of the at least one of the two or more flows via a rate restriction component of the node.

Assignees

• Oracle Int Corp

Inventors

• Johnsen Bjørn Dag
• Siddabathuni Ajoy
• Pant Avneesh
• Jolad Amarnath

Classifications

• H04L47/265

  sent by intermediate network nodes · CPC title

• H04L47/2433

  Allocation of priorities to traffic types · CPC title

• H04L47/30

  in combination with information about buffer occupancy at either end or at transit nodes · CPC title

• H04L41/12

  Discovery or management of network topologies · CPC title

• H04W28/0983

  for optimizing bandwidth or throughput · CPC title