Amazon Technologies, Inc.

Long Li

Richard Thomas Witek

Maya Suresh

Subject matter disclosed herein relates to arrangements and techniques that provide for sending messages among processing nodes over a network-on-chip (NoC). More particularly, the present disclosure provides an Application Specific Integrated Circuit (ASIC) that includes processing cores and co-processors. The processing cores and co-processors are coupled together with a NoC. Each processing core and co-processor includes two corresponding buffers. A first buffer is for sending messages and a second buffer is for receiving messages. If a processing core or co-processor needs to send a message and the corresponding first buffer is full, if the message includes a flag that indicates a WAIT function, then the processing core and/or co-processor enters a low power state until the first buffer is available; otherwise the message is ignored and not sent. Additionally, if a second buffer is empty, then the corresponding processing core and/or co-processor enters the low power state.

Achieving power saving by a circuit including pluralities of processing cores based on status of the buffers used by the processing cores

Subject matter disclosed herein relates to arrangements and techniques for sending messages directly among processing cores and directly among co-processors over a network-on-chip (NoC). More particularly, the present disclosure provides an Application Specific Integrated Circuit (ASIC) that includes processing cores coupled together with a NoC. Each processing core and co-processor includes two corresponding buffers. A first buffer is for sending messages and a second buffer is for receiving messages. Messages are sent from a processing core directly to another processing core through the NoC. Messages are also sent from a co-processor directly to another co-processor through the NoC.

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Cupertino, CA, United States of America

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