Cavium, Inc.

Nvidia Corporation

Lei Tian

Wilson Parkhurst Snyder, Ii

Praveen Jain

Dennis K Ma

Wei-Je Robert Huang

Franck R Diard

Karan Gupta

Atul Kalambur

Techniques are disclosed for peer-to-peer data transfers where a source device receives a request to read data words from a target device. The source device creates a first and second read command for reading a first portion and a second portion of a plurality of data words from the target device, respectively. The source device transmits the first read command to the target device, and, before a first read operation associated with the first read command is complete, transmits the second read command to the target device. The first and second portions of the plurality of data words are stored in a first and second portion a buffer memory, respectively. Advantageously, an arbitrary number of multiple read operations may be in progress at a given time without using multiple peer-to-peer memory buffers. Performance for large data block transfers is improved without consuming peer-to-peer memory buffers needed by other peer GPUs.

Efficient CPU mailbox read access to GPU memory

A method and an apparatus embodying the method for converting interrupts into scheduled events, comprising receiving an interrupt at an interrupt controller; determining a vector number for the interrupt; determining properties of an interrupt work in accordance with the vector number; and scheduling the interrupt work in accordance with the properties of the interrupt work, is disclosed.

Method and an apparatus for converting interrupts into scheduled events

A method and a system embodying the method for interrupt collecting an reporting, comprising: storing for each of at least one interrupt a status indicator, an enable status, and an interrupt delivery information in a first structure; storing for each of the at least one interrupt at least an indicator of one or more entities to execute an interrupt handler routine in a second structure; and reporting one of the at least one interrupt to the one or more entities to execute an interrupt handler routine designated in accordance with the status indicator, the enable status, the interrupt delivery information, and the at least one indicator, is disclosed.

Apparatus and method for interrupt collecting and reporting status and delivery information

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Boxborough, MA, United States of America

Lei Tian