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US 12,730,494 B2Granted
Heterogeneous chiplet power management
AssigneeAdvanced Micro Devices, Inc.
InventorBenjamin Tsien
Life of this patent
Estimating the term…
Abstract
The disclosed device includes heterogeneous chiplets that can communicate when each of the heterogenous chiplets has locally reached an idle state. Once receiving confirmations of the idle state from each of the heterogenous chiplets, the chiplets can complete the entry of the low power state. Various other methods, systems, and computer-readable media are also disclosed.
Claims20
A device comprising:
- a plurality of heterogeneous chiplets, wherein a first chiplet of the plurality of heterogeneous chiplets is configured to:
- report, to a second chiplet of the plurality of heterogeneous chiplets in response to receiving an indication of the device initiating entry of a low power state, locally reaching an idle state in which local clients are idle;
- and
- in response to receiving a confirmation of the idle state from the second chiplet, locally complete the entry of the low power state.
1 more element
A system comprising:
- a plurality of heterogeneous chiplets including a stutter client having an activity buffer;
- and
- a control circuit configured to:
- in response to the system initiating entry of a low power state, confirm each of the plurality of heterogeneous chiplets has locally reached an idle state;
- in response to receiving confirmations of the idle state from each of the plurality of heterogeneous chiplets, instruct the stutter client to fill the activity buffer to a buffer threshold;
- and
- in response to the stutter client filling the activity buffer, complete entry of the low power state.
4 more elements
A method comprising:
- transitioning a plurality of heterogeneous chiplets to a new power state that corresponds to power gating idle chiplets of the plurality of heterogeneous chiplets;
- confirming, while a stutter client chiplet of the plurality of heterogeneous chiplets is kept at least partially powered on, the idle chiplets have completed operations for reaching a fabric idle state;
- and
- in response to confirmations from the idle chiplets of the idle state, completing the transition to the new power state.
1 more element
Dependencies are inferred from the claim text.