International Business Machines Corporation

Corning Incorporated

Globalfoundries Inc.

Cyriel Johan Minkenberg

Mircea R Gusat

Casimer M DeCusatis

Keshav G Kamble

Nikolaos Chrysos

Daniel Crisan

Claude Basso

Fredy Daniel Neeser

Kenneth Michael Valk

Robert Birke

Renato John Recio

Vijoy A Pandey

Brian Thomas Vanderpool

Francois Abel

Bogdan Prisacari

German Rodriguez Herrera

Wolfgang Emil Denzel

William Joseph Armstrong

Chih-Jen Chang

Ronald Pete Luijten

Mitch Gusat

Girish Gopala Kurup

Anil Pothireddy

Vibhor K Srivastava

Ferdinand Gramsamer

Vinit Jain

David Alan Shedivy

Rolf Clauberg

Antonius Paulus Engbersen

Mark L Rudquist

Mark Verhappen

Philip Heidelberger

Benjamin G Lee

Jeffrey James Lynch

Yiyu L Chen

Lonny Lambrecht

Christopher Jon Johnson

Kenneth M Walk

Baba L Arimilli

Rajaram B Krishnamurthy

Alan Frederic Benner

Ilias Iliadis

Juergen Koehl

Norbert Schumacher

Richard Robert Grzybowski

Andreea Anghel

Ronald Peter Luijten

Bernd Leppla

Brewster Roe Hemenway, Jr

Michel Colmant

Mohanraj Krishnaraj

Jose Duato

Marc Verhappen

Jose Dusto

Rajaram Krishnamurthy

Enrico Schiattarella

Andreea-Simona Anghel

German R Herrera

Francois G Abel

IEEE 802.1Q and Enhanced Transmission Selection provide only eight different traffic classes that may be used to control bandwidth in a particular physical connection (or link). Instead of relying only on these eight traffic classes to manage bandwidth, the embodiments discussed herein disclose using an Enhanced Transmission Selection scheduler that permits a network device to set the bandwidth for an individual virtual LAN. Allocating bandwidth in a port based on a virtual LAN ID permits a network device to allocate bandwidth to, e.g., millions of unique virtual LANs. Thus, this technique may increase the granular control of the network fabric and its performance.

Flexible and scalable enhanced transmission selection method for network fabrics

In one embodiment, a method includes receiving a plurality of flows, each flow comprising packets of data and assigning a service credit to each of the plurality of flows. In addition, the method includes assigning a weight parameter to each of the plurality of flows, and selecting a flow from a head of a first control queue unless the first control queue is empty or there is indication that the first control queue should be avoided. A flow is selected from a head of a second control queue in response to a determination that the first control queue is empty or there is indication that the first control queue should be avoided. Additionally, the method includes providing a number of units of service to the selected flow. Moreover, the method includes decreasing the selected flow's service credit by an amount corresponding to the number of units of service provided thereto.

Arbitration of multiple-thousands of flows for convergence enhanced ethernet

A method includes associating overlay network attributes (ONAs) with overlay virtual networks. The ONAs are managed as portable entities. A movement operation is performed on components of at least one overlay virtual network of the overlay virtual networks to servers based on management of the ONAs. An ONA is modified to identify attributes associated with the movement operation of the components of the at least one overlay virtual network.

Overlay network movement operations

A method includes associating overlay network attributes (ONAs) with virtual networks. A movement operation is performed that includes re-assigning the virtual networks to servers of overlay networks based on management of the ONAs.

Disclosed herein is a system comprising a plurality of agents that desire access to a resource; a finite amount of an internal state; a processor that is configured to enforce an arbitration mechanism to translate a quota specification for the plurality of agents according to a set of rules comprising i) all classes of service that are serviceable are served according to the quota specification; ii) if an underserviced class is not serviceable, a serviceable class continues to be granted access to the one or more resources even if the granted access leads to an increase in the underservice of a non-serviceable class; iii) as soon as the underserviced class becomes serviceable, it will in priority recuperate its accumulated disadvantage until its quota specification is reached; and iv) the internal state is updated upon reaching boundary conditions.

Enablement of quota-based quality of service

Congestion management for data traffic in a virtual domain identifies a congestion source and sends a message to the source to adjust data traffic rates. The source may be a virtual machine hosted by a physical server with one or more virtual servers incorporated. A congestion manager may identify the source and send the message to the source without affecting other data sources hosted by the physical server or the virtual servers. In some embodiments, information about the congestion source may be encapsulated in a packet payload readable only by the congestion source so only the congestion source receives the instruction to adjust the transmission rate.

Virtual quantized congestion notification

A method for all-to-all message exchange between program tasks including N&#x3e;1 hierarchy levels l, n=1 to N, in which a first level lincludes a plurality of group tasks and each higher level lincludes at least one group of level lgroups to which that task belongs in respective hierarchy levels of the network topology; sending a message via the interconnection network to a respective destination task whose hierarchical identifier is determined; and using the hierarchical identifier to send the program task and the network topology, such that the resulting exchange pattern for the all-to-all message exchange exploits a hierarchical distance in the network topology in a desired manner.

All-to-all message exchange in parallel computing systems

Embodiments relate to controlling workload flow on converged Ethernet links. An aspect includes coupling, by a processing device, a first control loop to a second control loop. The second control loop monitors the operation of the first control loop. An equilibrium set point is initialized for the second control loop prior to commencing operation of the first control loop. Accordingly, the equilibrium set point value is adjusted in the second control loop continuously based on a rate of operation of the first control loop.

Adaptive setting of the quantized congestion notification equilibrium setpoint in converged enhanced ethernet networks

In one embodiment, a method includes receiving first overlay network traffic via a first input overlay tunnel at a multi-protocol virtual tunnel end point (VTEP) implemented in an accelerated network interface card (NIC) of a server. The method also includes routing the first overlay network traffic to a second overlay network tunnel which adheres to a second overlay network protocol in response to a determination that a destination of the first overlay network traffic is specified as the second overlay network tunnel. Moreover, the method includes receiving second overlay network traffic via the first input overlay tunnel at the multi-protocol VTEP. The method also includes bridging the second overlay network traffic to a first destination overlay network tunnel terminated at the multi-protocol VTEP in response to a determination that a destination of the second overlay network traffic is specified as the first destination overlay network tunnel.

Heterogeneous overlay network translation for domain unification

Adaptive setting of the quantized congestion notification equilibrium setpoint in converged enhanced Ethernet networks

In one embodiment, a method includes selecting a flow from a head of a first control queue or a second control queue. The method also includes providing service to the selected flow. Moreover, the method includes decreasing a service credit of the selected flow by an amount corresponding to an amount of service provided to the selected flow. In another embodiment, a computer program product includes a computer readable storage medium having program code embodied therewith. The embodied program code is readable/executable by a device to select, by the device, a flow from a head of a first control queue or a second control queue. The embodied program code is also readable/executable to provide, by the device, service to the selected flow, and decrease, by the device, a service credit of the selected flow by an amount corresponding to an amount of service provided to the selected flow.

An approach is described for routing data to a plurality of output terminals via a integrated switch router including a crossbar switch having both a crossbar and a plurality of crossbar bypass lines. Whereas the crossbar may connect each input of the crossbar switch to each output of the crossbar switch, each of the plurality of crossbar bypass lines may connect a single input of the crossbar switch to a corresponding single output of the crossbar switch. According to such approach, a replicated copy of a multicast packet may be forwarded to an output terminal via a crossbar bypass line in parallel with other data forwarded via the crossbar, thus increasing integrated switch router bandwidth.

Multicast packet routing via crossbar bypass paths

Embodiments of the invention relate to providing virtual network domain movement operations for overlay networks. One embodiment includes a method that includes determining one or more overlay network attributes (ONAs) for a plurality of virtual networks. The one or more ONAs are associated with the virtual networks. The one or more ONAs are managed as one or more portable entities by one or more of creating ONAs, deleting ONAs, moving ONAs, combining ONAs and dividing ONAs. A movement operation is performed on the one or more virtual networks among one or more servers of one or more overlay networks based on the management of the one or more ONAs.

Growing community of inventors

Gutenswil, Switzerland

Cyriel Johan Minkenberg