Patents by Inventor Vikram Venkataraghavan
Vikram Venkataraghavan 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).
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Patent number: 11340794Abstract: A system has a collection of central processing units. Each central processing unit is connected to at least one other central processing unit and has a path into flash memory resources. A central processing unit supports a mapping from a data address space, to a flash memory virtual address space, to a flash memory virtual page number to a flash memory physical address space.Type: GrantFiled: December 17, 2018Date of Patent: May 24, 2022Assignee: EMC IP HOLDING COMPANY LLCInventors: Mark Himelstein, James Yarbrough, Rick Carlson, Vishwas Durai, Vikram Venkataraghavan, Bruce A. Wilford, Grace Ho, Bill Katz, Richard Van Gaasbeck, Dan Arai, David R. Emberson
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Patent number: 11010054Abstract: According to one embodiment, a data processing system includes a plurality of processing units, each processing unit having one or more processor cores. The system further includes a plurality of memory roots, each memory root being associated with one of the processing units. Each memory root includes one or more branches and a plurality of memory leaves to store data. Each of the branches is associated with one or more of the memory leaves and to provide access to the data stored therein. The system further includes a memory fabric coupled to each of the branches of each memory root to allow each branch to access data stored in any of the memory leaves associated with any one of remaining branches.Type: GrantFiled: June 10, 2016Date of Patent: May 18, 2021Assignee: EMC IP HOLDING COMPANY LLCInventors: Mark Himelstein, Bruce Wilford, Richard Van Gaasbeck, Todd Wilde, Rick Carlson, Vikram Venkataraghavan, Vishwas Durai, James Yarbrough, Blair Barnett
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Patent number: 10713334Abstract: According to one embodiment, a data processing system includes a plurality of processing units, each processing unit having one or more processor cores. The system further includes a plurality of memory roots, each memory root being associated with one of the processing units. Each memory root includes one or more branches and a plurality of memory leaves to store data. Each of the branches is associated with one or more of the memory leaves and to provide access to the data stored therein. The system further includes a memory fabric coupled to each of the branches of each memory root to allow each branch to access data stored in any of the memory leaves associated with any one of remaining branches.Type: GrantFiled: June 21, 2017Date of Patent: July 14, 2020Assignee: EMC IP HOLDING COMPANY LLCInventors: Mark Himelstein, Bruce Wilford, Richard Van Gaasbeck, Todd Wilde, Rick Carlson, Vikram Venkataraghavan, Vishwas Durai, Blair Barnett, Kevin Rowett
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Patent number: 10515014Abstract: According to one embodiment, a data processing system includes a plurality of processors, each of the processors being coupled to each of remaining processors via a processor interconnect, a plurality of memory controllers, each memory controller corresponding to one of the processors, a plurality of memory targets, each memory target includes one or more branches and a plurality of memory leaves for storing data, and an Ethernet switch fabric coupled to the memory controllers and the memory targets. When a first of the memory controllers writes data to a first of the memory leaves, the first memory controller sends a cache coherence message to remaining ones of the memory controllers to indicate that the data stored in the first memory leaf has been updated, such that any of the remaining memory controllers can update its cache by fetching the data from the first memory leaf.Type: GrantFiled: June 21, 2017Date of Patent: December 24, 2019Assignee: EMC IP Holding Company LLCInventors: Mark Himelstein, Kevin Rowett, Bruce Wilford, Richard Van Gaasbeck, Todd Wilde, Rick Carlson, Vikram Venkataraghavan, Vishwas Durai, Blair Barnett
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Patent number: 10503416Abstract: According to one embodiment, a data processing system includes a plurality of central processing unit (CPU) subsystems, each CPU subsystem having a plurality of CPUs and a plurality of memory controllers, each memory controller corresponding to one of the CPUs, a plurality of memory complexes, each memory complex being associated with one of the CPU subsystems, wherein each memory complex comprises one or more branches, a plurality of memory leaves to store data, wherein each of the branches is coupled to one or more of the memory leaves and to provide access to the data stored in the memory leaves, and a replication interface to automatically replicate data received from one of the CPU subsystems to another one of the memory complexes, wherein the received data is to be stored in one of the memory leaves.Type: GrantFiled: June 21, 2017Date of Patent: December 10, 2019Assignee: EMC IP Holdings Company LLCInventors: Mark Himelstein, Bruce Wilford, Richard Van Gaasbeck, Todd Wilde, Rick Carlson, Vikram Venkataraghavan, Vishwas Durai, Blair Barnett, Kevin Rowett
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Patent number: 10496284Abstract: A page virtualization table (PVT) and one or more block virtualization tables (BVTs) are maintained. The PVT includes PVT entries, each mapping a logical page number (LPN) to a virtual page number (VPN). Each BVT includes BVT entries, each mapping a virtual block number (VBN) to a physical block number (PBN). A request is received for accessing data stored in one of flash memory devices, the request including a first LPN. A search is performed in the PVT based on the first LPN to locate a first PVT entry to obtain a first VPN from the first PVT entry. A search is performed in a first BVT to locate a first BVT entry based on the VPN to obtain a first PBN from the first BVT entry. An input and output (IO) request is issued based on the first PBN to a flash controller associated with a first flash memory device that stores data corresponding to the first PBN.Type: GrantFiled: June 21, 2017Date of Patent: December 3, 2019Assignee: EMC IP Holding Company LLCInventors: Mark Himelstein, Bruce Wilford, Richard Van Gaasbeck, Todd Wilde, Rick Carlson, Vikram Venkataraghavan, Vishwas Durai, Blair Barnett, Kevin Rowett
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Publication number: 20190121553Abstract: A system has a collection of central processing units. Each central processing unit is connected to at least one other central processing unit and has a path into flash memory resources. A central processing unit supports a mapping from a data address space, to a flash memory virtual address space, to a flash memory virtual page number to a flash memory physical address space.Type: ApplicationFiled: December 17, 2018Publication date: April 25, 2019Inventors: Mark Himelstein, James Yarbrough, Rick Carlson, Vishwas Durai, Vikram Venkataraghavan, Bruce A. Wilford, Grace Ho, Bill Katz, Rich Van Gaasbeck, Daniel Arai, David R. Emberson
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Patent number: 10209904Abstract: A system has a collection of central processing units. Each central processing unit is connected to at least one other central processing unit and has a path into flash memory resources. A central processing unit supports a mapping from a data address space, to a flash memory virtual address space, to a flash memory virtual page number to a flash memory physical address space.Type: GrantFiled: March 6, 2015Date of Patent: February 19, 2019Assignee: EMC IP Holding Company LLCInventors: Mark Himelstein, James Yarbrough, Rick Carlson, Vishwas Durai, Vikram Venkataraghavan, Bruce A. Wilford, Grace Ho, Bill Katz, Rich Van Gaasbeck, Daniel Arai, David R. Emberson
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Patent number: 9813283Abstract: Methods and apparatus are provided for transferring data between servers and a remote entity having multiple peripherals. Multiple servers are connected to a remote entity over an Remote Direct Memory Access capable network. The remote entity includes peripherals such as network interface cards (NICs) and host bus adapters (HBAs). Server descriptor rings and descriptors are provided to allow efficient and effective communication between the servers and the remote entity.Type: GrantFiled: August 9, 2005Date of Patent: November 7, 2017Assignee: ORACLE INTERNATIONAL CORPORATIONInventors: Ariel Cohen, Abhinav Anand, Pierre Aulagnier, Gerald Cheung, Naveed Cochinwala, Greg Lockwood, Ganesh Sundaresan, Susheel Tadikonda, Vikram Venkataraghavan, Ming Wong
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Publication number: 20150234612Abstract: A system has a collection of central processing units. Each central processing unit is connected to at least one other central processing unit and has a path into flash memory resources. A central processing unit supports a mapping from a data address space, to a flash memory virtual address space, to a flash memory virtual page number to a flash memory physical address space.Type: ApplicationFiled: March 6, 2015Publication date: August 20, 2015Applicant: Graphite System, Inc.Inventors: Mark Himelstein, James Yarborough, Rick Carlson, Vishwas Durai, Vikram Venkataraghavan, Bruce Wilford, Grace Ho, Bill Katz, Rich Van Gaasbeck, Dan Arai, David R. Emberson
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Patent number: 8745262Abstract: A method and apparatus stores media content in a variety of storage devices, with at least a portion of the storage devices having different performance characteristics. The system can deliver media to a large number of clients while maintaining a high level of viewing experience for each client by automatically adapting the bit rate of a media being delivered to a client using the client's last mile bit rate variation. The system provides clients with smooth viewing of video without buffering stops. The client does not need a custom video content player to communicate with the system.Type: GrantFiled: January 14, 2013Date of Patent: June 3, 2014Assignee: Juniper Networks, Inc.Inventors: Jaspal Kohli, Kumar Narayanan, Prabakar Sundarrajan, Junxiao He, Michael Nishimoto, Mohammed Zubair Visharam, Vikram Venkataraghavan
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Patent number: 8677023Abstract: Methods and apparatus are provided for virtualizing port adapter resources such as network interface cards (NICs) used to connect servers to packet based networks. Resources are offloaded from individual servers onto a resource virtualization switch. Servers connected to the resource virtualization switch using an I/O bus connection share access to NICs. Redundancy can be provided using multipathing mechanisms implemented at individual servers or high availability mechanisms implemented at the resource virtualization switch. Switchover can occur between ports on the same port adapter, between ports on separate adapters, or between ports on separate resource virtualization switches.Type: GrantFiled: June 3, 2005Date of Patent: March 18, 2014Assignee: Oracle International CorporationInventors: Vikram Venkataraghavan, Ming Wong, Vipul Jain, Cheng Tang, Shreyas Shah, Jonathan Davar, Mike Dvorkin
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Patent number: 8539036Abstract: A device receives, from a client device, a request for a resource that is available from an origin device, and determines whether the resource is cached in a cache server or not cached in the cache server. The device forwards the request to the cache server regardless of whether or not the resource is cached in the cache server, and receives, when the resource is not cached in the cache server, a redirect command from the cache server based on the request. The device forwards the received redirect command to the client device, where the redirect command instructs the client device to obtain the resource from the origin device. The device receives, from the cache server and based on the request, the resource when the resource is cached in the cache server, and forwards the received resource to the client device.Type: GrantFiled: March 18, 2011Date of Patent: September 17, 2013Assignee: Juniper Networks, Inc.Inventors: Jaspal Kohli, Vikram Venkataraghavan, Junxiao He
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Publication number: 20130145072Abstract: Methods and apparatus are provided for virtualizing port adapter resources such as network interface cards (NICs) used to connect servers to packet based networks. Resources are offloaded from individual servers onto a resource virtualization switch. Servers connected to the resource virtualization switch using an I/O bus connection share access to NICs. Redundancy can be provided using multipathing mechanisms implemented at individual servers or high availability mechanisms implemented at the resource virtualization switch. Switchover can occur between ports on the same port adapter, between ports on separate adapters, or between ports on separate resource virtualization switches.Type: ApplicationFiled: June 3, 2005Publication date: June 6, 2013Inventors: Vikram Venkataraghavan, Ming Wong, Vipul Jain, Cheng Tang, Shreyas Shah, Jonathan Davar, Mike Dvorkin
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Publication number: 20130138758Abstract: Methods and apparatus are provided for transferring data between servers and a remote entity having multiple peripherals. Multiple servers are connected to a remote entity over an Remote Direct Memory Access capable network. The remote entity includes peripherals such as network interface cards (NICs) and host bus adapters (HBAs). Server descriptor rings and descriptors are provided to allow efficient and effective communication between the servers and the remote entity.Type: ApplicationFiled: August 9, 2005Publication date: May 30, 2013Inventors: Ariel Cohen, Abhinav Anand, Pierre Aulagnier, Gerald Cheung, Naveed Cochinwala, Greg Lockwood, Ganesh Sundaresan, Susheel Tadikonda, Vikram Venkataraghavan, Ming Wong
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Patent number: 8370520Abstract: A method and apparatus stores media content in a variety of storage devices, with at least a portion of the storage devices having different performance characteristics. The system can deliver media to a large number of clients while maintaining a high level of viewing experience for each client by automatically adapting the bit rate of a media being delivered to a client using the client's last mile bit rate variation. The system provides clients with smooth viewing of video without buffering stops. The client does not need a custom video content player to communicate with the system.Type: GrantFiled: November 23, 2009Date of Patent: February 5, 2013Assignee: Juniper Networks, Inc.Inventors: Jaspal Kohli, Kumar Narayanan, Prabakar Sundarrajan, Junxiao (Max) He, Michael Nishimoto, Mohammed Zubair Visharam, Vikram Venkataraghavan
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Publication number: 20120239811Abstract: A device receives, from a client device, a request for a resource that is available from an origin device, and determines whether the resource is cached in a cache server or not cached in the cache server. The device forwards the request to the cache server regardless of whether or not the resource is cached in the cache server, and receives, when the resource is not cached in the cache server, a redirect command from the cache server based on the request. The device forwards the received redirect command to the client device, where the redirect command instructs the client device to obtain the resource from the origin device. The device receives, from the cache server and based on the request, the resource when the resource is cached in the cache server, and forwards the received resource to the client device.Type: ApplicationFiled: March 18, 2011Publication date: September 20, 2012Applicant: JUNIPER NETWORKS, INC.Inventors: Jaspal KOHLI, Vikram VENKATARAGHAVAN, Junxiao HE
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Publication number: 20100131671Abstract: A method and apparatus stores media content in a variety of storage devices, with at least a portion of the storage devices having different performance characteristics. The system can deliver media to a large number of clients while maintaining a high level of viewing experience for each client by automatically adapting the bit rate of a media being delivered to a client using the client's last mile bit rate variation. The system provides clients with smooth viewing of video without buffering stops. The client does not need a custom video content player to communicate with the system.Type: ApplicationFiled: November 23, 2009Publication date: May 27, 2010Inventors: Jaspal Kohli, Kumar Narayanan, Prabakar Sundarrajan, Junxiao (Max) He, Michael Nishimoto, Mohammed Zubair Visharam, Vikram Venkataraghavan