fix(kunlun): honour use-gpuuuid and nouse-gpuuuid annotations - #2577
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📝 WalkthroughWalkthroughKunlun physical and virtual allocation now applies legacy and Kunlun-specific UUID constraints during topology selection. UUID-related failures report ChangesKunlun UUID allocation
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟡 Moderate · up to Kunlun UUID filtering can still report a misleading allocation conflict when the requested UUID excludes an already-used device, and the documented annotation keys remain a correctness concern. Merge should wait for these issues to be fixed or explicitly accepted. Sequence Diagram(s)sequenceDiagram
participant Request
participant KunlunFit
participant graghSelect
participant Allocation
Request->>KunlunFit: UUID annotations and allocation request
KunlunFit->>graghSelect: Base and UUID eligibility callback
graghSelect->>Allocation: Topology-compatible devices
Allocation-->>KunlunFit: Allocation result or failure reason
Possibly related PRs
Suggested reviewers: Poem
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Inline comments:
In `@pkg/device/kunlun/device.go`:
- Line 192: Change the shared KunlunUseUUID and KunlunNoUseUUID annotation keys
in pkg/device/kunlun/device.go to use the hami.io/ namespace, and update
vdevice.go to consume those shared keys without adding a baidu.com path. In
pkg/device/kunlun/device_test.go, update the affected test description to
reference the standardized hami.io namespace.
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Verify each finding against current code. Fix only still-valid issues, skip the
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Inline comments:
In `@pkg/device/kunlun/device.go`:
- Around line 37-38: Update the Hami annotation values used by device.CheckUUID
to the documented hami.io/use-xpu-uuid and hami.io/no-use-xpu-uuid keys, while
retaining the existing baidu.com/... keys as legacy aliases. Add a test covering
UUID filtering with the documented literal Hami keys.
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pkg/device/kunlun/device.gopkg/device/kunlun/device_test.gopkg/device/kunlun/vdevice.go
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- pkg/device/kunlun/vdevice.go
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KunlunUseUUID and KunlunNoUseUUID were defined but never read, so a pod asking for baidu.com/use-gpuuuid was scheduled onto any XPU and nouse-gpuuuid could not exclude a card. Every other backend calls device.CheckUUID in Fit(); kunlun was missed when the shared helper landed in Project-HAMi#1622 and again when Project-HAMi#2045 changed it. graghSelect derives topology from a device's position in the slice, so the check goes into the fitFn it already takes rather than filtering the slice, which would shift devices between wings. Both KunlunDevices and KunlunVDevices are covered, and an allocation that fails only because of the annotations now reports CardUuidMismatch instead of NumaNotFit. Signed-off-by: Lakshya77089 <lakshyasharma7708@gmail.com>
…ount graghSelect can call fitFn more than once for the same device, so the plain counter reported the same card twice. Track mismatched ids in a map instead. The physical path now reads the same hami.io/use-xpu-uuid and hami.io/no-use-xpu-uuid keys vdevice.go already defines, rather than a new pair, so both kunlun paths honour one documented annotation. baidu.com/ stays as the legacy alias. Added a test that uses the literal key so a rename of the constant cannot silently break it. Signed-off-by: Lakshya77089 <lakshyasharma7708@gmail.com>
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Inline comments:
In `@pkg/device/kunlun/vdevice.go`:
- Around line 267-270: Update the mutex conflict scan in the surrounding
device-allocation logic to count conflicts only for used devices that satisfy
the pod’s UUID constraint, matching the existing UUID eligibility predicate.
Preserve CardUUIDMismatch reporting when the constraint excludes every used
device, and add a regression test covering that mutex pod scenario.
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: archlitchi, Lakshya77089 The full list of commands accepted by this bot can be found here. The pull request process is described here DetailsNeeds approval from an approver in each of these files:
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3 participants
What type of PR is this?
/kind bug
What this PR does / why we need it:
KunlunUseUUID(baidu.com/use-gpuuuid) andKunlunNoUseUUIDare defined inpkg/device/kunlun/device.gobut never read. NeitherKunlunDevices.FitnorKunlunVDevices.Fitcallsdevice.CheckUUID, so:nouse-gpuuuidcannot exclude a cardNo error, no warning — the annotation is silently ignored.
Every other backend does call it: nvidia, amd, ascend, awsneuron, biren,
cambricon, enflame, hygon, iluvatar, metax and mthreads. Kunlun looks like it
was simply missed — the constants were added with the backend in #1121, then
#1622 extracted the shared
CheckUUIDhelper and migrated the other backendswithout kunlun, and #2045 changed the helper again, also without kunlun.
The fix
The check goes into the
fitFnthatgraghSelectalready takes, rather thanfiltering the device slice before calling it. That matters here:
graghSelectderives topology from a device's position in the slice (
idx < 4is onewing), so removing entries would move the remaining cards between wings and
change which interconnect group gets picked. Passing the constraint through
fitFnleaves positions untouched.Both kunlun backends are covered. An allocation that fails only because of the
annotations now reports
CardUuidMismatchrather thanNumaNotFit, which wasmisleading.
Tests
Three tests in
pkg/device/kunlun/device_test.go, all failing on master:They pass with this change, and the 20 existing kunlun tests still pass.
Which issue(s) this PR fixes:
None filed — raising the fix directly.
Special notes for your reviewer:
Behaviour change worth naming: a pod that carries these annotations today is
scheduled anywhere, and after this it is restricted to the cards it names. If a
cluster has pods with a stale or wrong
use-gpuuuidvalue that currentlyschedule fine, they will start failing with
CardUuidMismatch. That is theannotation doing what it says, but it is a visible change for anyone who had
been relying on it being ignored.
Not validated on real hardware. The change is confined to the scheduler's
kunlun Fit path and is covered by unit tests, which CONTRIBUTING allows for
scheduler-scoped changes.
Does this PR introduce a user-facing change?:
AI assistance disclosure: this change was developed with Claude Code — finding
the gap, the fix, and the tests. Flagging the extent up front per CONTRIBUTING.
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