In some examples, a computing device comprises a virtual network endpoint; a network interface card (NIC) comprising a first hardware component and a second hardware component, wherein the first hardware component and the second hardware component provide separate packet input/output access to a physical network interface of the NIC, wherein the NIC is configured to receive a packet inbound from the physical network interface; and a virtual router to receive the packet from the NIC and output, using the first hardware component, in response to determining a destination endpoint of the packet is the virtual network endpoint, the packet back to the NIC, wherein the NIC is further configured to switch, in response to receiving the packet from the virtual router, the packet to the virtual network endpoint and to output, using the second hardware component, the packet to the virtual network endpoint.

A system includes a host interface, a storage interface, and one or more control circuits coupled to the host interface and coupled to the storage interface. The one or more control circuits include a common set of registers configured to maintain first entries according to a first storage protocol for first storage devices connected to the storage interface and to maintain second entries according to a second storage protocol for second storage devices connected to the storage interface.

Devices for coordinating or establishing a direct memory access for a network interface card to a graphics processing unit, and for a network interface card to access a graphics processing unit via a direct memory access are disclosed. For example, a central processing unit may request a graphics processing unit to allocate a memory buffer of the graphics processing unit for a direct memory access by a network interface card and receive from the graphics processing unit a first confirmation of an allocation of the memory buffer. The central processing unit may further transmit to the network interface card a first notification of the allocation of the memory buffer of the graphics processing unit, poll the network interface card to determine when a packet is received by the network interface card, and transmit a second notification to the graphics processing unit that the packet is written to the memory buffer.

A network adapter includes one or more network ports, multiple bus interfaces, and a processor. The one or more network ports are configured to communicate with a communication network. The multiple bus interfaces are configured to communicate with multiple respective Central Processing Units (CPUs) that belong to a multi-CPU device. The processor is configured to support an Option-ROM functionality, in which the network adapter holds Option-ROM program instructions that are loadable and executable by the multi-CPU device during a boot process, and, in response to a request from the multi-CPU device to report the support of the Option-ROM functionality, to report the support of the Option-ROM functionality over only a single bus interface, selected from among the multiple bus interfaces connecting the network adapter to the multi-CPU device.

A data processing method for a network adapter includes the network adapter that obtains a first input/output (I/O) command. The first I/O command instructs to write data stored in a local server to at least one remote server, and the first I/O command includes address information and length information that are of the data and that are stored in the local server. The network adapter splits the data based on the address information and the length information to obtain a plurality of groups of address information and length information. The network adapter obtains, from the local server based on the groups of address information and length information, data corresponding to the groups of address information and length information, and sends the data to the at least one remote server.

A market-data processing device (MDPD) includes a line-rate processing module (LRPM) and a host. The LRPM is connected to an LRPM external-communication interface having a first port configured to receive a market-data input feed from an upstream device and a second port configured to transmit a market-data output feed to a downstream device. The LRPM includes a programmable logic circuit (PLC) configured to generate the output feed based on the input feed and transmit an archival copy of the input feed to the host via a communication bus. The host is connected to the LRPM via the communication bus and to a host external-communication interface. The host has a host processor configured to cache the archival copy of the input feed and use the cached archival copy of the input feed to provide, to the downstream device via the host external-communication interface, a gap-fill service for the output feed.

Presently disclosed are systems and methods for generating customized filtered-and-partitioned market-data feeds. In an embodiment, an output-feed profile is maintained in data storage at a market-data-processing device (MDPD). The output-feed profile specifies a subset of ticker symbols and a ticker-symbol-based feed-partitioning scheme. An input feed of order-book updates to ticker symbols is received at the MDPD from an upstream device. At the MDPD, a customized market-data output feed is generated according to the maintained output-feed profile at least in part by filtering the input feed down to the order-book updates to ticker symbols in the specified subset and partitioning the filtered feed according to the specified ticker-symbol-based feed-partitioning scheme. The customized market-data output feed is transmitted from the MDPD to a downstream device.

A market data processing device (MDPD) receives, from an upstream device, an input feed of order-book updates to ticker symbols. A first market-data feed is generated at the MDPD at least in part by: filtering the input feed down to order-book updates to a ticker-symbol subset; and inserting a sequence number into each such order-book update. Also generated at the MDPD is a second market-data feed that includes the order-book updates of the first market-data feed having the same sequence numbers inserted into the same order-book updates. The first market-data feed is transmitted to an arbitration device via a first communication path. The second market-data feed is transmitted to the arbitration device via a second communication path that is separate and distinct from the first communication path for use by the arbitration device in conducting sequence-number-based arbitration between the first and second market-data feeds.

Presently disclosed are systems and methods for targeted exchange emulation. In an embodiment, an output-feed profile that specifies a ticker-symbol subset is maintained at a market data processing device (MDPD). An input feed of order-book updates to respective ticker symbols is received at the MDPD from an upstream device. An output feed is generated at the MDPD at least in part by filtering the received input feed down to order-book updates to the ticker-symbol subset and generating output-feed messages that convey the remaining order-book updates. The generated output feed (including the generated output-feed messages) is transmitted from the MDPD to a downstream device. Cached copies of at least the order-book updates from the input feed that correspond with output-feed messages in the output feed are stored at the MDPD. A gap-fill service for the output feed is provided from the MDPD to the downstream device using the cached copies.

The invention provides methods and apparatus for the reading of data from digital memory devices, and methods and apparatus for the wireless transmittal of the data to computing devices. The apparatus combines hardware and software to serve files from the memory device to any web-capable computing device, such as a portable computer, tablet, or smart phone, by creating HTML wrappers around the files and directories on the memory device. The data is presented to the computing devices in a secure manner, through the agency of a web browser running on each device.