Patents Assigned to Clockwork Systems, Inc.
  • Patent number: 12248802
    Abstract: A device determines whether virtual resources are co-located on a physical resource. The device computes a plurality of distance matrices, each distance matrix of the plurality of distance matrices computed using a different raw input signal. The device combines the plurality of distance matrices into a combined distance matrix. The device determines, using the combined distance matrix, subsets of the virtual resources that are using shared physical hardware. The device outputs indicia of the subsets.
    Type: Grant
    Filed: February 28, 2023
    Date of Patent: March 11, 2025
    Assignee: Clockwork Systems, Inc.
    Inventors: Bernd Bandemer, Vinay Sriram, Balaji S. Prabhakar
  • Patent number: 12170602
    Abstract: Network traffic is monitored to coordinate control of data flows. Data flows between sender hosts and a receiver host are identified. A first data flow and a second data flow have respective priorities. Delay thresholds are assigned to the first data flow and second data flow based on their respective priorities. One-way delays of data packets of the first and second data flows are monitored relative to the assigned delay thresholds. Responsive to determining that the one-way delay of the first data flow's data packets exceed a first delay threshold, transmissions of the first data flow's data packets are paused for a first amount of time. Responsive to determining that the one-way delay of the second data flow's data packets exceed a second delay threshold, transmissions of the second data flow's packets are paused for a second amount of time that exceeds the first amount of time.
    Type: Grant
    Filed: April 20, 2022
    Date of Patent: December 17, 2024
    Assignee: Clockwork Systems, Inc.
    Inventors: Yilong Geng, Balaji S. Prabhakar, Shiyu Liu
  • Patent number: 12052337
    Abstract: Systems and methods are disclosed herein for syntonizing machines in a network. A coordinator accesses probe records for probes transmitted at different times between pairs of machines in the mesh network. For different pairs of machines, the coordinator estimates the drift between the pair of machines based on the transit times of probes transmitted between the pair of machines as indicated by the probe records. For different loops of at least three machines in the mesh network, the coordinator calculates a loop drift error based on a sum of the estimated drifts between pairs of machines around the loop and adjusts the estimated absolute drifts of the machines based on the loop drift errors. Here, the absolute drift is defined relative to a drift of a reference machine.
    Type: Grant
    Filed: September 27, 2023
    Date of Patent: July 30, 2024
    Assignee: Clockwork Systems, Inc.
    Inventors: Yilong Geng, Deepak Merugu, Balaji S. Prabhakar
  • Patent number: 11848870
    Abstract: A regular buffer and a shadow buffer are maintained at a receiver host. Responsive to receiving a data flow from a sender host that is clock-synchronized with the receiver host using a common reference clock, a first indication of data of the data flow is stored to the regular buffer, the shadow buffer is transitioned from an idle state to an active state, and a counter of the shadow buffer is incremented that indicates a unit of data traffic received. A dynamic drain rate is determined based on a number of units of the data removed from the regular buffer per unit of time while the shadow buffer is in the active state, where the shadow buffer reverts to an idle state responsive to a break in the receiver host receiving the data flow. Dwell time is calculated as a function of the counter of the shadow buffer and the dynamic drain rate, and a congestion signal for the data flow is determined based on the dwell time.
    Type: Grant
    Filed: February 28, 2023
    Date of Patent: December 19, 2023
    Assignee: Clockwork Systems, Inc.
    Inventors: Shiyu Liu, Balaji S. Prabhakar
  • Patent number: 11804946
    Abstract: Systems and methods are disclosed herein for syntonizing machines in a network. A coordinator accesses probe records for probes transmitted at different times between pairs of machines in the mesh network. For different pairs of machines, the coordinator estimates the drift between the pair of machines based on the transit times of probes transmitted between the pair of machines as indicated by the probe records. For different loops of at least three machines in the mesh network, the coordinator calculates a loop drift error based on a sum of the estimated drifts between pairs of machines around the loop and adjusts the estimated absolute drifts of the machines based on the loop drift errors. Here, the absolute drift is defined relative to a drift of a reference machine.
    Type: Grant
    Filed: January 21, 2022
    Date of Patent: October 31, 2023
    Assignee: Clockwork Systems, Inc.
    Inventors: Yilong Geng, Deepak Merugu, Balaji S. Prabhakar
  • Patent number: 11632225
    Abstract: Systems and methods are disclosed herein for performing a time-triggered distribution of messages from a region of networked machines to multiple destinations. In an embodiment, the system runs a software-based synchronization process to synchronize each of a plurality of gateways with a reference clock, wherein each gateway is a machine on a perimeter of the region of networked machines and is connected to transmit messages to multiple destinations. The gateways receive messages from within the region of networked machines for distribution to multiple destinations outside the region of networked machines according to a distribution schedule based on absolute time relative to the reference clock. The gateways perform the distribution of received messages, wherein each gateway determines absolute time based on that gateway's synchronization with the reference clock.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: April 18, 2023
    Assignee: Clockwork Systems, Inc.
    Inventors: Yilong Geng, Deepak Merugu, Balaji S. Prabhakar
  • Patent number: 11239993
    Abstract: Systems and methods are disclosed herein for syntonizing machines in a network. A coordinator accesses probe records for probes transmitted at different times between pairs of machines in the mesh network. For different pairs of machines, the coordinator estimates the drift between the pair of machines based on the transit times of probes transmitted between the pair of machines as indicated by the probe records. For different loops of at least three machines in the mesh network, the coordinator calculates a loop drift error based on a sum of the estimated drifts between pairs of machines around the loop and adjusts the estimated absolute drifts of the machines based on the loop drift errors. Here, the absolute drift is defined relative to a drift of a reference machine.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: February 1, 2022
    Assignee: CLOCKWORK SYSTEMS, INC.
    Inventors: Yilong Geng, Deepak Merugu, Balaji S. Prabhakar
  • Patent number: 11133919
    Abstract: Systems and methods are disclosed herein for performing a time-triggered distribution of messages from a region of networked machines to multiple destinations. In an embodiment, the system runs a software-based synchronization process to synchronize each of a plurality of gateways with a reference clock, wherein each gateway is a machine on a perimeter of the region of networked machines and is connected to transmit messages to multiple destinations. The gateways receive messages from within the region of networked machines for distribution to multiple destinations outside the region of networked machines according to a distribution schedule based on absolute time relative to the reference clock. The gateways perform the distribution of received messages, wherein each gateway determines absolute time based on that gateway's synchronization with the reference clock.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: September 28, 2021
    Assignee: Clockwork Systems, Inc.
    Inventors: Yilong Geng, Deepak Merugu, Balaji S. Prabhakar