Peer-to-peer redundant file server system and methods include clients that determine a target storage provider to contact for a particular storage transaction based on a pathname provided by the filesystem and a predetermined scheme such as a hash function applied to a portion of the pathname. Servers use the same scheme to determine where to store relevant file information so that the clients can locate the file information. The target storage provider may store the file itself and/or may store metadata that identifies one or more other storage providers where the file is stored. A file may be replicated in multiple storage providers, and the metadata may include a list of storage providers from which the clients can select (e.g., randomly) in order to access the file.

Peer-to-peer redundant file server system and methods

A home network, in one embodiment including a home wiring system; a demarcation point unit in electrical communication with the home wiring system; and a home network module in electrical communication with the home wiring system. The home network module is adapted for connection to a home electronic device. The demarcation point unit passes data to and receives data from the home electronic device through the home network module.

Home network system and method

In general in one aspect, the invention relates to a method for reconfiguring a virtual network path. The method includes populating a virtual switching table associated with virtual network interface cards (VNICs), implementing the virtual network path using the virtual switching table, where the virtual network path includes a first virtual wire between a first VNIC located in a first computer and a second VNIC located in a second computer, placing a first network packet and a second network packet in a receive buffer associated with the second VNIC, transmitting the first network packet to the second VNIC using the virtual switching table, migrating the second VNIC from the second computer to a third computer, updating the virtual switching table based on migrating the second VNIC, and transmitting the second network packet to the second VNIC in the third computer using the virtual switching table.

Method and system for reconfiguring a virtual network path

A method for migrating a first virtual machine (VM), that includes transmitting, prior to migration, a first packet between the first VM on a first blade chassis and a second VM on a second blade chassis using a first virtual network interface card (VNIC) and a second VNIC. The method includes migrating the first VM and the first VNIC to the second blade, identifying a subnet of the first VM, identifying a subnet of the second VM, and creating a virtual router to execute on the second blade. The virtual router is associated with a third VNIC and a fourth VNIC. A first network address in the first VNIC's subnet is assigned to the third VNIC. A second network address in the second VNIC's subnet is assigned to the fourth VNIC. The method includes routing a second packet between the first VM and the second VM using the virtual router.

Method and system for creating a virtual router in a blade chassis to maintain connectivity

A system and a method for failover control comprising: maintaining a primary device table entry (DTE) in a first table activated for a first adapter in communication with a first processor node having a first root complex via a first switch assembly and maintaining a secondary DTE in standby for a second adapter in communication with a second processor node having a second root complex via a second switch assembly; maintaining a primary DTE in a second table activated for the second adapter and maintaining a secondary DTE in standby for the first adapter; and upon a failover, updating the secondary DTE in the first table as an active entry for the second adapter and forming a path to enable traffic to route from the second adapter through the second switch assembly over to the first switch assembly and up to the first root complex of the first processor node.

Switch failover control in a multiprocessor computer system

A computing method includes accepting a definition of a computing task (68), which includes multiple atomic Processing Elements (PEs - 76) having execution dependencies (80). Each execution dependency specifies that a respective first PE is to be executed before a respective second PE. The computing task is compiled for concurrent execution on a multiprocessor device (32), which includes multiple processors (44) that are capable of executing a first number of the PEs simultaneously, by arranging the PEs, without violating the execution dependencies, in an invocation data structure (90) including a second number of execution sequences (98) that is greater than one but does not exceed the first number. The multiprocessor device is invoked to run software code that executes the execution sequences in parallel responsively to the invocation data structure, so as to produce a result of the computing task.

Efficient parallel computation of dependency problems

Certain aspects of a method and system for configuring a plurality of network interfaces that share a physical interface (PHY) may include a system comprising one or more physical network interface controllers (NICs) and two or more virtual NICs. One or more drivers associated with each of the virtual NICs that share one or more Ethernet ports associated with the physical NICs may be synchronized based on controlling one or more parameters associated with one or more Ethernet ports. One or more wake on LAN (WoL) patterns associated with each of the drivers may be detected at one or more Ethernet ports. A wake up signal may be communicated to one or more drivers associated with the detected WoL patterns. One of the drivers may be appointed to be a port master driver. If a failure of the appointed port master driver is detected, another driver may be appointed to be the port master driver.

Method and system for configuring a plurality of network interfaces that share a physical interface

Certain aspects of a method and system for transparent transmission control protocol (TCP) offload are disclosed. Aspects of a method may include collecting TCP segments in a network interface card (NIC) processor without transferring state information to a host system. The collected TCP segments may be buffered in a coalescer. The coalescer may verify that the network flow associated with the collected TCP segments has an entry in a flow lookup table (FLT). When the FLT is full, the coalescer may close a current entry and assign the network flow to the available entry. The coalescer may also update information in the FLT. When an event occurs that terminates the collection of TCP segments, the coalescer may generate a single aggregated TCP segment based on the collected TCP segments. The aggregated TCP segment and state information may be communicated to the host system for processing.

Method and system for transparent TCP offload

A method for communication includes inputting from a host processor to a network interface device a sequence of work requests indicative of operations to be carried out by the network interface device with respect to a plurality of the connections. The device looks ahead through the sequence in order to identify at least first and second operations that are to be carried out with respect to one of the connections in response to first and second work requests, respectively, wherein the second work request does not immediately follow the first work request in the sequence. The device loads the context data for the one of the connections from a host memory into a context cache, and performs at least the first and second operations sequentially while the context data are held in the cache.

Efficient handling of work requests in a network interface device

Certain aspects of a method and system for delayed completion coalescing may be disclosed Exemplary aspects of the method may include accumulating a plurality of bytes of incoming TCP segments in a host memory until a number of the plurality of bytes of incoming TCP segments reaches a threshold value A completion queue entry (CQE) may be generated to a driver when the plurality of bytes of incoming TCP segments reaches the threshold value and the plurality of bytes of incoming TCP segments may be copied to a user application The method may also include delaying in a driver, an update of a TCP receive window size until one of the incoming TCP segments corresponding to a particular sequence number is copied to the user application The CQE may also be generated to the driver when at least one of the incoming TCP segments is received with a TCP PUSH bit SET and the TCP receive window size is greater than a particular window size value

Shay Mizrachi

Papers

Efficient parallel computation of dependency problems

Method and system for configuring a plurality of network interfaces that share a physical interface

Method and system for transparent TCP offload

Efficient handling of work requests in a network interface device

Method and System for Delayed Completion Coalescing