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Epic
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Resolution: Unresolved
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Normal
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None
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None
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None
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DPDK core affinity redesign for large AMD systems
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False
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False
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To Do
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rhel-9
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rhel-net-ovs-dpdk
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0% To Do, 0% In Progress, 100% Done
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ssg_networking
This epic is for tracking and supporting the upstream redesign of DPDK core-to-lcore mapping for large AMD systems where core IDs exceed `RTE_MAX_LCORE`.
On AMD systems with more than 128 cores, starting DPDK without an explicit --lcores or -c option causes startup failure. This is because DPDK historically maps CPU cores 1:1 to lcores, which breaks when the core IDs exceed `RTE_MAX_LCORE`. A redesign is proposed upstream by Intel to remap core IDs to a contiguous lcore list.
As we are participating in reviews and tracking the evolution of the mid, this epic will collects them and eventual downstream preparation.