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US 2026/0093648 A1Published application
Pseudo-active link state for multi-die link failure
AssigneesAdvanced Micro Devices, Inc., ATI Technologies ULC
InventorsDavid Akselrod, Alexander J. Branover, Robert Landon Pelt, Todd David Basso, Trevor Pogue
Life of this patent
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Abstract
The disclosed device includes a communication link between chiplets and a control circuit near a physical layer of the link for one of the chiplets. When the link becomes inactive, the control circuit can mimic an active status of the link including intercepting packets and injecting mimicked responses, to allow graceful failover or other debugging. Various other methods, systems, and computer-readable media are also disclosed.
Claims20
A device comprising:
- a first computing circuit configured to generate a data signal;
- a link configured to send the generated data signal to a second computing circuit and receive response signals from the second computing circuit;
- and
- a control circuit configured to simulate an active status of the link by controlling an active status visible to the first computing circuit.
1 more element
A system comprising:
- a memory;
- a first processor coupled to the memory;
- and
- a second processor coupled to the memory;
- wherein the first processor comprises:
- one or more computing circuits configured to generate packets;
- a link configured to send the generated packets to the second processor and receive responses from the second processor;
- and
- a control circuit configured to simulate an active status of the link in response to an inactive status of the link by controlling the active status visible to the one or more computing circuits.
6 more elements
A method comprising:
- intercepting, by a control circuit in response to an inactive status of a link, an outgoing data signal from one or more computing circuits;
- extracting, by the control circuit, metadata from the intercepted outgoing data signal;
- and
- propagating, by the control circuit to the one or more computing circuits, a mimicked response based on the metadata.
1 more element
Dependencies are inferred from the claim text.