摘要:
Communication apparatus includes a memory, which is configured to hold data packets, having respective packet sizes, for transmission over a data link, and a transmitter, which is configured to transmit the data packets over the data link at a bit rate determined by a wire speed of the data link. A shaper is coupled to throttle transmission of the data packets by the transmitter responsively to the respective packet sizes, whereby some of the data packets are transmitted over the data link at a transmission rate that is less than the bit rate.
摘要:
A decoder includes one or more Variable-Node Processors (VNPs) that hold respective variables, and logic circuitry. The logic circuitry is configured to decode a code word of an Error Correction Code (ECC), which is representable by a set of check equations, by performing a sequence of iterations such that each iteration involves processing of at least some of the variables, to hold one or more auxiliary equations derived from the check equations, so that a number of the auxiliary equations is smaller than a number of the check equations, to evaluate the auxiliary equations, during the sequence of iterations, using the variables, and, in response to detecting that the variables satisfy the auxiliary equations, to terminate the sequence of iterations and output the variables as the decoded code word.
摘要:
A method for communication includes transmitting a sequence of outgoing data blocks from a network node over a communication link to a peer node, and receiving incoming data blocks from the peer node. A control field is added in a predefined location in each of the outgoing data blocks in the sequence by the network node. In at least a first subset of the outgoing data blocks in the sequence, the control field contains error control information, which is capable of causing the peer node to retransmit one or more of the incoming data blocks to the network node, while in at least a second subset of the outgoing data blocks in the sequence, disjoint from the first subset, the control field contains a flow control instruction, configured to cause the peer node to alter a rate of transmission of the incoming data blocks over the link.
摘要:
A method for communication includes transmitting data packets from a communication device to a network. Upon receiving in the communication device a congestion notification from the network, a rate of transmission of the data packets from the communication device to the network is reduced. While transmitting the data packets, after reducing the rate of transmission, the rate of transmission is increased incrementally when a predefined volume of data has been transmitted since having made a previous change in the rate of transmission.
摘要:
Optical apparatus includes first and second diffractive optical elements (DOEs) arranged in series to diffract an input beam of radiation. The first DOE is configured to apply to the input beam a pattern with a specified divergence angle, while the second DOE is configured to split the input beam into a matrix of output beams with a specified fan-out angle. The divergence and fan-out angles are chosen so as to project the radiation onto a region in space in multiple adjacent instances of the pattern.
摘要:
A method includes defining multiple moderation tasks, which originate from respective textual articles that are to be automatically converted into respective video clips following moderation by human moderators. The moderation tasks are pre-processed, so as to predict success measures of the corresponding video clips. Delivery of the moderation tasks to the human moderators is prioritized based on the predicted success measures.
摘要:
A cryptography apparatus includes multiple multiplication units and logic circuitry. The multiplication units are arranged in two or more multiplication levels, and are configured to operate in accordance with Galois-Field (GF) arithmetic over respective Galois fields. The logic circuitry is configured to receive input data whose word-size exceeds a maximal input word-size among the multiplication units, to hold a cryptographic key including multiple sub-keys whose number does not exceed a number of the multiplication units, and to perform a cryptographic operation on the input data by applying the sub-keys to the multiplication units.
摘要:
A method for steering packets, including receiving a packet and determining parameters to be used in steering the packet to a specific destination, in one or more initial steering stages, based on one or more packet specific attributes. The method further includes determining an identity of the specific destination of the packet in one or more subsequent steering stages, governed by the parameters determined in the one or more initial stages and one or more packet specific attributes, and forwarding the packet to the determined specific destination.
摘要:
An apparatus includes a memory and a memory controller. The memory includes a memory block that includes memory cells connected by word lines. The memory controller is configured to store data in the memory cells, and to identify a suspected short-circuit event in the memory block by recognizing a deviation of a performance characteristic of at least a given word line in the memory block relative to the performance characteristic of remaining word lines in the memory block.
摘要:
A method for memory access includes maintaining in a host memory, under control of a host operating system running on a central processing unit (CPU), respective address translation tables for multiple processes executed by the CPU. Upon receiving, in a peripheral device, a work item that is associated with a given process, having a respective address translation table in the host memory, and specifies a virtual memory address, the peripheral device translates the virtual memory address into a physical memory address by accessing the respective address translation table of the given process in the host memory. The work item is executed in the peripheral device by accessing data at the physical memory address in the host memory.