Patents by Inventor Robert J. Woodruff

Robert J. Woodruff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20160162439
    Abstract: Methods and apparatus to provide heterogeneous I/O (Input/Output) using RDMA (Remote Direct Memory Access) and/or Active Message are described. In an embodiment, information is exchanged between an embedded system and a storage device via a source device. The embedded system and the storage device exchange information over a first link and a second link instead of a third link in response to a transfer rate of the first link (coupled between the embedded system and the source device) being faster than a transfer rate of the second link (coupled between the source device and the storage device). The third link is capable to directly couple the embedded system and the storage device. Other embodiments are also disclosed and claimed.
    Type: Application
    Filed: December 9, 2014
    Publication date: June 9, 2016
    Applicant: Intel Corporation
    Inventors: SHIOW-WEN WENDY CHENG, Robert J. Woodruff
  • Publication number: 20160124877
    Abstract: Embodiments of apparatuses and methods for remote direct memory access (RDMA) with commit acknowledgements (ACKs) are described. In embodiments, a device may include a process queue to store a remote direct memory access (RDMA) request from an initiator to update a target memory. The device may further include a control module, coupled to the process queue, to issue a commit operation to the target memory based on the RDMA request and generate an acknowledgement, ACK, to be sent to the initiator on completion of the commit operation. Other embodiments may be described and/or claimed.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 5, 2016
    Inventors: Mark S. Hefty, Robert J. Woodruff
  • Publication number: 20160062944
    Abstract: Methods, apparatus, and software for implementing RMA application programming interfaces (APIs) over Active Message (AM). AM write and AM read requests are sent from a local node to a remote node to write data to or read data from memory on the remote node using Remote Memory Access (RMA) techniques. The AM requests are handled by corresponding AM handlers, which automatically perform operations associated with the requests. For example, for AM write requests an AM write request handler may write data contained in an AM write request to a remote address space in memory on the remote node, or generate a corresponding RMA write request that is enqueued into an RMA queue used in accordance with a tagged message scheme. Similar operations are performed by AM read requests handlers. RMA reads and writes using AM are further facilitated through use of associated read, write, and RMA progress modules.
    Type: Application
    Filed: September 2, 2014
    Publication date: March 3, 2016
    Inventors: Jianxin Xiong, Robert J. Woodruff, Frank L. Berry
  • Publication number: 20150338909
    Abstract: Methods for performing power management of InfiniBand (IB) switches and apparatus and software configured to implement the methods. Power management datagrams (MADs) are used to inform IB switches that host servers connected to the IB switch's ports are to transition to a reduced-power or offline state or have returned to a normal operating state. A subnet management agent (SMA) on the IB switch receives the power MADs from the host servers and tracks each server's operating state. In response to power down MADs, the SMA coordinates power reduction of the switch's ports and other switch circuitry. For switches with multi-port IB interfaces, a multi-port interface is caused to enter a reduced-power state when all of its ports are connected to host servers that are idle or offline. Additionally, when all of a switch's ports are connected to idle or offline servers the SMA may put the switch's core switch logic into a reduced-power state.
    Type: Application
    Filed: May 21, 2014
    Publication date: November 26, 2015
    Inventor: Robert J. Woodruff
  • Publication number: 20150331722
    Abstract: In an embodiment, a method is provided. In an embodiment, the method provides determining that a message has been placed in a send buffer; and transferring the message to an application on a second virtual machine by bypassing use of an operating system to process the message by directly placing the message in an application memory space from which the application can retrieve the message.
    Type: Application
    Filed: July 27, 2015
    Publication date: November 19, 2015
    Inventors: William R. Magro, Robert J. Woodruff, Jianxin Xiong
  • Publication number: 20150317280
    Abstract: Methods, apparatus, and software for optimizing network data flows within constrained systems. The methods enable data to be transferred between PCIe cards in multi-socket server platforms, each platform including a local socket having an InfiniBand (IB) HCA and a remote socket. Data to be transmitted outbound from a platform is transferred from a PCIe card to the platform's IB HCA via a proxied datapath. Data received at a platform may employ a direct PCIe peer-to-peer (P2P) transfer if the destined PCIe card is installed in the local socket or via a proxied datapath if the destined PCIe card is installed in a remote socket. Outbound transfers from a PCIe card in a local socket to the platform's IB HCA may selectively be transferred using an either a proxied data path for larger data transfers or a direct P2P datapath for smaller data transfers.
    Type: Application
    Filed: April 30, 2014
    Publication date: November 5, 2015
    Inventors: William R. Magro, Arlin R. Davis, Jerrie L. Coffman, Robert J. Woodruff, Jianxin Xiong
  • Patent number: 9176911
    Abstract: Methods, apparatus and systems for facilitating explicit flow control for RDMA transfers using implicit memory registration. To setup an RDMA data transfer, a source RNIC sends a request to allocate a destination buffer at a destination RNIC using implicit memory registration. Under implicit memory registration, the page or pages to be registered are not explicitly identified by the source RNIC, and may correspond to pages that are paged out to virtual memory. As a result, registration of such pages result in page faults, leading to a page fault delay before registration and pinning of the pages is completed. In response to detection of a page fault, the destination RNIC returns an acknowledgment indicating that a page fault delay is occurring. In response to receiving the acknowledgment, the source RNIC temporarily stops sending packets, and does not retransmit packets for which ACKs are not received prior to retransmission timeout expiration.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: November 3, 2015
    Assignee: INTEL CORPORATION
    Inventors: Arlin R. Davis, Robert J. Woodruff
  • Publication number: 20150305006
    Abstract: In an embodiment, at least one interface mechanism may be provided. The mechanism may permit, at least in part, at least one process allocate, at least in part, and/or configure, at least in part, at least one network-associated object. Such allocation and/or configuration, at least in part, may be in accordance with at least one parameter set that may correspond, at least in part, to at least one query issued by the at least one process via the mechanism. Many modifications are possible without departing from this embodiment.
    Type: Application
    Filed: April 16, 2014
    Publication date: October 22, 2015
    Inventors: WILLIAM R. MAGRO, TODD M. RIMMER, ROBERT J. WOODRUFF, MARK S. HEFTY, SAYANTAN SUR
  • Patent number: 8914556
    Abstract: Embodiments of the invention describe systems, apparatuses and methods that enable sharing Remote Direct Memory Access (RDMA) device hardware between a host and a peripheral device including a CPU and memory complex (alternatively referred to herein as a processor add-in card). Embodiments of the invention utilize interconnect hardware such as Peripheral Component Interconnect express (PCIe) hardware for peer-to-peer data transfers between processor add-in cards and RDMA devices. A host system may include modules or logic to map memory and registers to and/or from the RDMA device, thereby enabling I/O to be performed directly to and from user-mode applications on the processor add-in card, concurrently with host system I/O operations.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: December 16, 2014
    Assignee: Intel Corporation
    Inventors: William R. Magro, Robert J. Woodruff, David M. Lee, Arlin R. Davis, Mark Sean Hefty, Jerrie L. Coffman
  • Publication number: 20140250202
    Abstract: Methods and apparatus to provide peer-to-peer interrupt signaling between devices coupled via one or more interconnects are described. In one embodiment, a NIC (Network Interface Card such as a Remote Direct Memory Access (RDMA) capable NIC) transfers data directly into or out of the memory of a peer device that is coupled to the NIC via one or more interconnects, bypassing a host computing/processing unit and/or main system memory. Other embodiments are also disclosed.
    Type: Application
    Filed: May 29, 2012
    Publication date: September 4, 2014
    Inventors: Mark S. Hefty, Robert J. Woodruff, Jerrie L. Coffman, William R. Margo
  • Publication number: 20140245303
    Abstract: In an embodiment, a method is provided. In an embodiment, the method provides determining that a message has been placed in a send buffer; and transferring the message to an application on a second virtual machine by bypassing use of an operating system to process the message by directly placing the message in an application memory space from which the application can retrieve the message.
    Type: Application
    Filed: February 28, 2014
    Publication date: August 28, 2014
    Inventors: William R. Magro, Robert J. Woodruff, Jianxin Xiong
  • Publication number: 20140164545
    Abstract: Methods, apparatus and systems for facilitating explicit flow control for RDMA transfers using implicit memory registration. To setup an RDMA data transfer, a source RNIC sends a request to allocate a destination buffer at a destination RNIC using implicit memory registration. Under implicit memory registration, the page or pages to be registered are not explicitly identified by the source RNIC, and may correspond to pages that are paged out to virtual memory. As a result, registration of such pages result in page faults, leading to a page fault delay before registration and pinning of the pages is completed. In response to detection of a page fault, the destination RNIC returns an acknowledgment indicating that a page fault delay is occurring. In response to receiving the acknowledgment, the source RNIC temporarily stops sending packets, and does not retransmit packets for which ACKs are not received prior to retransmission timeout expiration.
    Type: Application
    Filed: December 11, 2012
    Publication date: June 12, 2014
    Inventors: Arlin R. Davis, Robert J. Woodruff
  • Patent number: 8707331
    Abstract: In an embodiment, a method is provided. In an embodiment, the method provides determining that a message has been placed in a send buffer; and transferring the message to an application on a second virtual machine by bypassing use of an operating system to process the message by directly placing the message in an application memory space from which the application can retrieve the message.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: April 22, 2014
    Assignee: Intel Corporation
    Inventors: William R. Magro, Robert J. Woodruff, Jianxin Xiong
  • Publication number: 20130275631
    Abstract: Embodiments of the invention describe systems, apparatuses and methods that enable sharing Remote Direct Memory Access (RDMA) device hardware between a host and a peripheral device including a CPU and memory complex (alternatively referred to herein as a processor add-in card). Embodiments of the invention utilize interconnect hardware such as Peripheral Component Interconnect express (PCIe) hardware for peer-to-peer data transfers between processor add-in cards and RDMA devices. A host system may include modules or logic to map memory and registers to and/or from the RDMA device, thereby enabling I/O to be performed directly to and from user-mode applications on the processor add-in card, concurrently with host system I/O operations.
    Type: Application
    Filed: September 30, 2011
    Publication date: October 17, 2013
    Inventors: William R. Magro, Robert J. Woodruff, David M. Lee, Arlin R. Davis, Mark Sean Hefty, Jerrie L. Coffman
  • Publication number: 20120259940
    Abstract: In an embodiment, a method is provided. In an embodiment, the method provides determining that a message has been placed in a send buffer; and transferring the message to an application on a second virtual machine by bypassing use of an operating system to process the message by directly placing the message in an application memory space from which the application can retrieve the message.
    Type: Application
    Filed: June 14, 2012
    Publication date: October 11, 2012
    Inventors: William R. Magro, Robert J. Woodruff, Jianxin Xiong
  • Patent number: 8225330
    Abstract: In an embodiment, a method is provided. In an embodiment, the method provides determining that a message has been placed in a send buffer; and transferring the message to an application on a second virtual machine by bypassing use of an operating system to process the message by directly placing the message in an application memory space from which the application can retrieve the message.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: July 17, 2012
    Assignee: Intel Corporation
    Inventors: William R. Magro, Robert J. Woodruff, Jianxin Xiong
  • Publication number: 20110246989
    Abstract: In an embodiment, a method is provided. In an embodiment, the method provides determining that a message has been placed in a send buffer; and transferring the message to an application on a second virtual machine by bypassing use of an operating system to process the message by directly placing the message in an application memory space from which the application can retrieve the message.
    Type: Application
    Filed: June 13, 2011
    Publication date: October 6, 2011
    Inventors: William R. Magro, Robert J. Woodruff, Jianxin Xiong
  • Patent number: 7987469
    Abstract: In an embodiment, a method is provided. In an embodiment, the method provides determining that a message has been placed in a send buffer; and transferring the message to an application on a second virtual machine by bypassing use of an operating system to process the message by directly placing the message in an application memory space from which the application can retrieve the message.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: July 26, 2011
    Assignee: Intel Corporation
    Inventors: William R. Magro, Robert J. Woodruff, Jianxin Xiong
  • Patent number: 7817634
    Abstract: Remote direct memory access over a network uses a constrained usage model. In one embodiment, a method of accessing memory on a network comprises a first node of the network generating a remote direct memory access request to remotely access application-level memory on a second node of the network. The first node sends the request in a packet over the network to the second node, the sending being performed in accordance with a constrained usage model. In a further embodiment, constrained usage model comprises sending the packet in an Ethernet protocol packet over an Ethernet network, the Ethernet protocol packet having a OSI layer two header, but not a layer three header.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: October 19, 2010
    Assignee: Intel Corporation
    Inventors: Jerrie Coffman, Arlin Davis, Sean Hefty, Roy Larsen, William R. Magro, Robert J. Woodruff
  • Publication number: 20080148281
    Abstract: In an embodiment, a method is provided. In an embodiment, the method provides determining that a message has been placed in a send buffer; and transferring the message to an application on a second virtual machine by bypassing use of an operating system to process the message by directly placing the message in an application memory space from which the application can retrieve the message.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 19, 2008
    Inventors: William R. Magro, Robert J. Woodruff, Jianxin Xiong