Sambanova Systems, Inc.

John Philipp Baxley

Manish K Shah

A computing system includes a first network, a second network, multiple first agents connected to the first network, multiple second agents connected to the second network, and an interface circuit interconnecting the two networks. The interface circuit includes multiple request queues, a first arbiter for selecting requests from the second agents for transactions on the first network and entering them into the request queues, and credit counters associated with the first agents. A second arbiter selects requests from the oldest entry of each request queue based on the credit counters, sends transactions over the first network, and removes the selected requests from their respective queues. This system efficiently manages communication between the first and second networks, enhancing overall system performance.

Two-level arbitration in a computing system

A coarse-grained reconfigurable (CGR) processor comprises a first network and a second network; a plurality of agents coupled to the first network; an array of CGR units coupled together by the second network; and a tile agent coupled between the first network and the second network. The tile agent comprises a plurality of links, a plurality of credit counters associated with respective agents of the plurality of agents, a plurality of credit-hog counters associated with respective links of the plurality of links, and an arbiter to manage access to the first network from the plurality of links based their associated credit-hog counters. Furthermore, a credit-hog counter of the plurality of credit-hog counters changes in response to processing a request for a transaction from its associated link.

Head of line blocking mitigation in a reconfigurable data processor

A coarse-grained reconfigurable (CGR) processor includes agents coupled to a first network, an array of CGR units connected by a second network, and a tile agent coupled between the first and second networks. The tile agent includes links to receive requests for transactions on the first network, request queues respectively associated with the links, credit counters associated with respective agents, a first arbiter, and a second arbiter. The first arbiter selects a request from the received requests for transactions and enters the selected request into a request queue associated with a link that received the selected request. The second arbiter chooses a request from an oldest entry of each request queue based on the credit counters, sends a transaction based on the chosen request over the first network, and removes the chosen request from its respective request queue.

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Arlington, VA, United States of America

John Philipp Baxley