AMDXDNA Driver Preps Hardware Scheduler Time Quantum For Ryzen AI Multi-User Fairness
The AMDXDNA driver for Ryzen AI NPUs is introducing a hardware scheduler time quantum feature to enhance fairness among multiple users. This feature aims to prevent single programs from monopolizing NPU resources, similar to a recent change made by Intel for its Core Ultra NPUs. The new capability is currently under review and is expected to be ready for the upcoming Linux v7.2 cycle.
- ▪The hardware scheduler time quantum will enforce a fixed time slice per context on the Ryzen AI NPU.
- ▪The default time quantum is set to 30 ms, which can be configured through a module parameter.
- ▪This initiative follows Intel's recent changes to its IVPU accelerator driver to improve resource sharing.
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AMDXDNA Driver Preps Hardware Scheduler Time Quantum For Ryzen AI Multi-User Fairness Written by Michael Larabel in AMD on 28 April 2026 at 06:06 AM EDT. Add A Comment The AMDXDNA accelerator driver for Ryzen AI NPUs is preparing a new feature called hardware scheduler time quantum for ensuring fairness between multiple users/contexts wanting to leverage this neural processing unit for AI workloads. The Intel IVPU accelerator driver for Core Ultra NPUs recently enacted a change to prevent single programs from exhausting all NPU resources. That change was picked up for Linux 7.1 and prevents a single non-root user/program from occupying all contexts and doorbells of the Intel NPU.
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