feat(recipes): add GB300 EKS Ubuntu training Slurm recipe - #2544
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Recipe evidence checkOther affected recipes without evidence yet: 1These recipes are affected by this PR but carry no committed evidence pointer, so there is
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Full details: Linked Issues checkExplanation The changes address issue Full details: Out of Scope Changes checkExplanation The changes are within scope. Recipe data, KWOK profile support, affected-profile discovery, tests, documentation, and generated goldens directly support the requested GB300 EKS Ubuntu training Slurm capability. The additional KWOK matrix coverage is explicitly described as an intended side effect. ✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Inline comments:
In `@kwok/profiles/eks/p6e-gb300.yaml`:
- Line 52: Update the profile selection for the GB300 EKS configuration so it
distinguishes Ubuntu overlays from the two non-Ubuntu overlays before applying
osImage. Use separate OS-aware profiles, or replace osImage with an OS-neutral
simulation field that does not claim Ubuntu 24.04 for every overlay.
In `@kwok/README.md`:
- Line 127: Update the KWOK cluster configuration to use Kubernetes 1.34 or
later, then change the documented default version in the “Cluster defaults”
README entry to match. Ensure the p6e-gb300 profile is enabled only with this
compatible Kubernetes version.
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docs/user/recipe-health.mdkwok/README.mdkwok/profiles/eks/p6e-gb300.yamlpkg/bundler/testdata/stock_render_golden.yamlpkg/recipe/deployment_order_guard_test.gopkg/recipe/metadata_store_test.gopkg/recipe/metadata_test.gopkg/recipe/testdata/catalog_parity_golden.yamlpkg/recipe/testdata/coverage_golden.yamlrecipes/overlays/gb300-eks-ubuntu-training-slurm.yaml
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Coverage Report ✅
Coverage BadgeNo Go source files changed in this PR. |
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Multi-persona review — gb300-eks-ubuntu-training-slurm
Method: 4 independent persona reviewers (Recipe/Domain, CI/Operability, Test-coverage, Docs/Data-integrity) plus an adversarial senior meta-reviewer that re-derived each finding from the resolved code. Legend: 🔴 Blocker · 🟠 Major · 🟡 Minor · 🔵 Nitpick.
Verdict: Approve with comments. This is a clean, additive, faithful transposition of the gb200-eks-ubuntu-training-slurm sibling — the data delta is name / base / accelerator / Gres plus expanded comments. Independently confirmed: driver pin 580.173.02 matches gpu-operator/values.yaml; GPU count 4 is consistent across profile / GRES / limits; base chain intact (robust-controller/secure-accelerator-access correctly absent as a property of the training base); IMEX-vs-topograph choice correct for an EKS Slurm leaf; deployment ordering (nvidia-dra-driver-gpu → slinky-slurm) sound; goldens are additions-only with no existing digest moved; all pkg/recipe tests pass. The renamed by-name IMEX subtests are strong enough to fail on a Gres/SwitchType transposition typo rather than only shifting an opaque golden digest.
Both CodeRabbit findings are INVALID — the author's rebuttals hold on every sub-claim (independently confirmed):
- osImage
Ubuntu 24.04: the KWOK profile selector is OS-blind (service+accelerator only), the two non-ubuntu gb300-eks overlays declare noos:so nothing is contradicted, and the KWOK lane never runsaicr validate/collect-evidence.sh— the value is descriptive-only and consumed by nothing. - K8s
>= 1.34vs READMEv1.33.5:v1.33.5is the cosmetic simulated-nodekubeletVersion; the real Kind control plane iskindest/node:v1.36.1and the constraint readsdiscoveryClient.ServerVersion()(control plane), so>= 1.34is satisfied.
Nothing blocks merge. The one Minor and the nitpicks below are optional polish.
| Tier | Count |
|---|---|
| 🔴 Blocker | 0 |
| 🟠 Major | 0 |
| 🟡 Minor | 1 |
| 🔵 Nitpick | 4 |
Recommendation: Approve with comments.
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Inline comments:
In @.github/workflows/kwok-recipes.yaml:
- Line 240: Update the changed-file pattern in the workflow condition to accept
only YAML files directly beneath one provider directory under kwok/profiles,
matching the path scope used by the runtime selector in profile-select.sh;
reject root-level and nested paths so unrelated files cannot populate
changed_gpu_profile_pairs.
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.github/workflows/kwok-recipes.yamlkwok/README.mdrecipes/overlays/gb300-eks-ubuntu-training-slurm.yaml
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Force-pushed: It was a rebase onto
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Re-review — all prior feedback addressed ✔️
Method: Delta re-review at head 2169bf74. My prior COMMENTED review (5 inline) was at a18a41e4; the branch was rebased onto fresh main and 5 fix commits landed. Each prior finding + CodeRabbit's was dispositioned against the resolved code, and the one executable change — the KWOK CI selector — got an adversarial senior pass.
Legend: ✔️ Addressed · ⊘ No longer applicable
Prior-feedback status
| # | Prior | Finding | Disposition |
|---|---|---|---|
| P1 | 🟡 Minor | Cluster defaults mislabeled simulated kubeletVersion as the cluster K8s version |
✔️ Addressed — f4954a1b adds a 2-row table separating control-plane kindest/node:v1.36.1 from the cosmetic simulated v1.33.5, and states constraints evaluate against the control plane. |
| P2 | 🔵 Nitpick | PR desc understated Rule 2's ~7× Tier-2 cost | ✔️ Addressed — body now: "All seven gb300 overlays ran in this PR's own Tier 2 and passed." |
| P3 | 🔵 Nitpick | Comment ref p6e-gb200 implied a non-existent profile |
✔️ Addressed — 3cb2b7f0 rewrites to "the p6e-gb300r.36xlarge instance exposes nvidia.com/gpu.count=4". |
| P4 | 🔵 Nitpick | Profile deletion not fail-closed (optional) | ✔️ Addressed — a8296c1d emits ::warning ...KWOK profile removed... on a deleted profile. |
| P5 | 🔵 Nitpick | gpu:gb300:4 GRES is a runtime NVML contract |
⊘ Standing/informational — no code change expected; hardware UAT tracked by #2358, recipe-health = pending. |
| CR1 | 🟡 Minor (CodeRabbit) | Match changed-profile discovery to the runtime selector | ✔️ Addressed — 2169bf74 tightens the regex to ^kwok/profiles/[^/]+/[^/]+\.yaml$. |
Adversarial verification of the new CI logic
- Regex is exact —
select_profilesdiscovers viafind "$service_dir" -maxdepth 1 -name '*.yaml'; the tightened pattern matches precisely that, closing both prior.+failure directions (top-leveltemplate.yaml; nestedeks/testdata/x.yaml). - Rule 2 keying is correct — GPU profiles key
service:accel, system profiles keyservicealone, mirroring the selector. No over/under-promotion; overlays defaulted out of Tier 2 are covered by ungated Tier 1. - Bash is clean — the discovery loop uses a herestring (
<<< "$changed_files"), not a pipe, so thedeclare -Aarrays persist (a pipe would have silently emptied them). Unset-key access is:--guarded underset -u; every substitution has|| exit 1. - Deletion path is rename-safe — a rename surfaces as the destination path (promoted); a true delete warns + continues.
New findings from the fix commits
None.
Pre-existing observations (untouched code — out of scope for this add-only PR)
- Rules 1/3/4 use
grep -qF "recipes/overlays/${name}.yaml"— a substring match that could over-promote on a fixture path containing that literal (blast radius: extra Tier-2 CI runs only). Worth a future CI-hardening pass, not this PR.
Summary
🔴 0 | 🟠 0 | 🟡 0 | 🔵 0 surviving new findings — prior 6/6 dispositioned (5 ✔️ Addressed, 1 ⊘ standing/informational).
Approving. Every item from my prior review and CodeRabbit's was addressed; the new CI selector logic is verified correct against the runtime selector.
Resolve eks + gb300 + ubuntu + training + slurm to a new leaf that inherits the gb300-eks-ubuntu-training chain and adds the Slinky and MariaDB components, with GB300 GRES and IMEX topology. All chart pins are inherited, so the BOM is unchanged. Add the eks/p6e-gb300 KWOK profile. No profile matched (eks, gb300) before, so all seven gb300 EKS overlays were dropped at classify; this admits them to the KWOK matrix. Extend the tests that enumerate Slurm leaves by name, and generalize the IMEX ComputeDomain test over both IMEX-capable leaves. Signed-off-by: Varun Ramesh <varamesh@nvidia.com>
Rewrite three wrong claims in the KWOK profile: osImage is descriptive only, cpu 144 is 2x72 Grace cores rather than a sibling value, and the gpu-operator values path is unwrapped so a grep finds it. State the README GPU total as 4 x spec.gpu.count instead of a stale enumeration. Correct the overlay's rationale for inlining the Slinky componentRefs: platform-kubeflow.yaml shows a mixin can carry them, so the named guard is not the blocker. Rename gb200ConformanceChecks to imexSlurmConformanceChecks, hoist loadMetadataStore above the table, and move the DRA-ordering rationale above both guard cases. Signed-off-by: Varun Ramesh <varamesh@nvidia.com>
A profile change flips every overlay it matches from dropped to testable, but Tier 2 only reacted to registry/base, overlay/ancestor and values-file changes, so those overlays first ran post-merge in Tier 3. Resolve the changed profiles' labels once, then promote every overlay selecting them: a system profile fans out across its provider, a GPU profile across its (provider, accelerator) pair. Also thread the caller's context into assertSlurmLeafWiresIMEXComputeDomain instead of creating a new one, and rename imexSlurmConformanceChecks to gbEKSSlurmConformanceChecks -- the two missing checks come from the gb200/gb300 training bases, not from IMEX. Signed-off-by: Varun Ramesh <varamesh@nvidia.com>
The README's cluster-defaults line named v1.33.5 as the cluster Kubernetes version, but that is the cosmetic kubeletVersion stamped onto simulated nodes; recipe constraints are evaluated against the Kind control plane (kindest/node:v1.36.1) via ServerVersion(). Two reviewers read the line the wrong way, so state both explicitly. Warn on a removed KWOK profile instead of skipping it silently: the overlays it backed leave the matrix through the NO_MATCH drop path, which is a coverage loss worth announcing. Drop the p6e-gb200 cross-reference from the gb300 leaf comment -- no such KWOK profile exists; the sibling is p6-gb200.yaml. Signed-off-by: Varun Ramesh <varamesh@nvidia.com>
The changed-profile pattern accepted any depth under kwok/profiles/, but select_profiles only reads kwok/profiles/<provider>/<name>.yaml. A stray file at another depth was wrong in both directions: with no provider label it hard-failed discovery and blocked the whole KWOK gate; with labels it promoted overlays that can never select it. Signed-off-by: Varun Ramesh <varamesh@nvidia.com>
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Re-review (re-affirm) — rebase only, nothing substantive changed ✔️
My earlier APPROVE (at 2169bf74) was auto-dismissed by a force-push. The branch was rebased onto fresh main (same 5 fix commits, re-hashed). Re-reviewed at head babb4f58:
- All PR-owned source is byte-identical to the approved tree — the recipe, the
p6e-gb300KWOK profile, thekwok-recipes.yamlchanged-profile selector,kwok/README.md, and every test file are unchanged. - The only diff is the two golden digest files (
pkg/bundler/testdata/stock_render_golden.yaml,pkg/recipe/testdata/catalog_parity_golden.yaml), where every overlay's digest moved — a whole-catalog regeneration, not a gb300-specific change. - Verified inherited from
main: the PR-head goldens are identical toupstream/mainexcept for the gb300 additions (e.g.a100-anymatches main exactly; zero non-gb300 differing lines). The regeneration correctly absorbs main's catalog-wide digest shift.
All prior feedback (mine + CodeRabbit's) remains addressed; the previously-verified CI selector logic is unchanged. Re-affirming the approval.
🔴 0 | 🟠 0 | 🟡 0 | 🔵 0 — no new findings.
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Review — head babb4f581
No blocking findings. The recipe and profile implementation is internally consistent, and targeted local checks pass — recipe generation, health-document freshness, lint, and the KWOK Tier-2 lanes. All seven GB300 Tier-2 lanes passed at the patch-equivalent pre-rebase head. Approved with one non-blocking documentation correction, inline.
What I checked
The overlay's non-comment delta against its GB200 sibling is exactly four lines: metadata.name, base, the accelerator criterion, and Gres. The shared ComputeDomain manifest and the IMEX conformance check contain no accelerator-specific strings, and the resourceClaimTemplate names align between manifest and overlay.
Catalog parity is complete — every file naming the GB200 Slurm leaf also names the GB300 one. The profile's driver matches the 580.173.02 GPU Operator pin, p6e-gb300r.36xlarge matches existing repository usage, and gpu.product has no consumer in recipes/ or the scheduling assertions, so its exact value is descriptive only.
I extracted the new changed-profile classifier and ran it against the pinned tree:
p6e-gb300.yamlpromotes exactly 7 GB300 EKS overlays.system-m7i.yamlwould promote 22 EKS accelerator overlays: 8 H100, 7 GB200, 7 GB300.- A deleted profile emits a warning without promotion or failure.
- An unrelated file is a no-op.
CI corroborates the first line independently: the KWOK run at 2169bf74b dispatched exactly seven Tier 2 / gb300-* (helm) lanes and all seven succeeded.
The rebase pulled two interacting changes from main — numNodes: 0 added to the shared compute-domain.yaml, and a new pkg/recipe/computedomain_numnodes_test.go. The latter scans manifests for the field rather than enumerating leaves by name, so the new leaf needs no entry. Four of the five branch commits are patch-identical across the rebase; the first differs only in the two regenerated golden digests caused by that numNodes change. No rebase interaction.
Checks run: make recipe-health-check (fresh — the row's counts are generated, not hand-copied); targeted pkg/recipe tests; recipe generation for the new criteria, resolving 20 components across 8 overlays; actionlint; yamllint. The 17 ShellCheck notes actionlint reports are unchanged in count from origin/main.
Not run locally: full make qualify. At 2169bf74b all checks were green, including the seven GB300 Tier-2 lanes.
Updated: the documentation correction was applied verbatim in f9d213f25 and that thread is resolved. Checks have since completed with no failures. The branch is behind main, so it needs a rebase before it can merge.
Out of scope
These are follow-up candidates, not requests against this diff:
- The changed-profile classifier lives in workflow YAML without focused behavioral tests and calls
_read_profile_label, a library-private helper. It fails closed today; extracting it intokwok/scripts/lib/with add/change/delete cases would improve maintainability. - A system-profile change fans out to 22 Tier-2 cells. Correct behavior, documented in the workflow comments; broader contributor documentation can be handled separately.
kwok/profiles/eks/p6-gb200.yamlpre-exists with the wrong instance shape (8 GPUs /p6.48xlargeagainst 4-GPU recipes) and a stale driver pin.- The seven Slurm leaves duplicate the six-component Slinky block because no
platform-slurmmixin exists. - Hardware-backed Slurm UAT remains tracked by #2358. KWOK cannot verify that
gpu:gb300:4matches the GRES typeslurmdderives from NVML.
Verification was read-only; no files were modified.
v1.33.5 is three minors behind v1.36.1, which is the maximum a v1.36 API server supports -- the pair is at the boundary, not past it. The previous wording said "outside the supported skew", which invited a fix to DEFAULT_K8S_VERSION that nothing requires. Signed-off-by: Varun Ramesh <varamesh@nvidia.com>
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Approving at f9d213f25. The only finding I raised — the kubelet/API-server skew claim in kwok/README.md — was applied verbatim and that thread is resolved; the commit touches nothing else, so my earlier verification carries over unchanged.
Note the branch is behind main and will need a rebase before it can merge.
Rebase artifact only. main's NVIDIA#2544 added a GB300 EKS Ubuntu training Slurm recipe, which changes the catalog parity/render goldens, the coverage golden, and the recipe-health matrix. Regenerated rather than hand-merged; both VR200 rows are unchanged. Signed-off-by: Yuan Chen <yuanchen97@gmail.com>
Rebase artifact only. main's NVIDIA#2544 added a GB300 EKS Ubuntu training Slurm recipe, which changes the catalog parity/render goldens, the coverage golden, and the recipe-health matrix. Regenerated rather than hand-merged; both VR200 rows are unchanged. Signed-off-by: Yuan Chen <yuanchen97@gmail.com>
Rebase artifact only. main's NVIDIA#2544 added a GB300 EKS Ubuntu training Slurm recipe, which changes the catalog parity/render goldens, the coverage golden, and the recipe-health matrix. Regenerated rather than hand-merged; both VR200 rows are unchanged. Signed-off-by: Yuan Chen <yuanchen97@gmail.com>
Rebase artifact only. main's NVIDIA#2544 added a GB300 EKS Ubuntu training Slurm recipe, which changes the catalog parity/render goldens, the coverage golden, and the recipe-health matrix. Regenerated rather than hand-merged; both VR200 rows are unchanged. Signed-off-by: Yuan Chen <yuanchen97@gmail.com>
Rebase artifact only. main's NVIDIA#2544 added a GB300 EKS Ubuntu training Slurm recipe, which changes the catalog parity/render goldens, the coverage golden, and the recipe-health matrix. Regenerated rather than hand-merged; both VR200 rows are unchanged. Signed-off-by: Yuan Chen <yuanchen97@gmail.com>
Rebase artifact only. main's NVIDIA#2544 added a GB300 EKS Ubuntu training Slurm recipe, which changes the catalog parity/render goldens, the coverage golden, and the recipe-health matrix. Regenerated rather than hand-merged; both VR200 rows are unchanged. Signed-off-by: Yuan Chen <yuanchen97@gmail.com>
Rebase artifact only. main's NVIDIA#2544 added a GB300 EKS Ubuntu training Slurm recipe, which changes the catalog parity/render goldens, the coverage golden, and the recipe-health matrix. Regenerated rather than hand-merged; both VR200 rows are unchanged. Signed-off-by: Yuan Chen <yuanchen97@gmail.com>
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Summary
Adds
gb300-eks-ubuntu-training-slurmso theeks + gb300 + ubuntu + training + slurmcriteria resolve, plus theeks/p6e-gb300KWOK node profile needed to simulate it.Motivation / Context
AICR had no recipe for GB300 on EKS with Slurm. The leaf inherits the 20-component
gb300-eks-ubuntu-trainingchain and adds the six Slinky/MariaDB components, declaring GB300 GRES and IMEX topology.Fixes: #2428
Related: #2358
Type of Change
Component(s) Affected
pkg/recipe)docs/,examples/)kwok/profiles/eks/)Implementation Notes
No new pins, no new components. All 19 charts are inherited from
registry.yaml, sodocs/user/container-images.mdis correctly unchanged. Nothing new was authored — the two Slurm conformance checks (slinky-slurm-health,slinky-slurm-imex-channel) already existed and are referenced by name.The recipe is a transposition of the gb200 sibling. Ignoring comments, the entire delta is four lines:
metadata.name,base,criteria.accelerator, andGres: "gpu:gb200:4"→"gpu:gb300:4".nvidia.com/gpu: 4is unchanged — both instance types expose 4 GPUs per Kubernetes node, so only the GRES label differs. The SlinkycomponentRefsblock is duplicated rather than composed because noplatform-slurmmixin exists and all six existing Slurm leaves inline it the same way.Topology is IMEX, not topograph — consistent with every other EKS/AKS Slurm leaf. #2358 confirms topograph rides only on the GKE and Kind leaves.
The KWOK profile has a side effect worth flagging. No profile matched
(eks, gb300)before, so all seven gb300 EKS overlays were dropped at classify and had never been simulated — four of them predate this work. Adding the profile admits them to the KWOK matrix (~42 new Tier-3 cells: 7 overlays x 6 deployers).Originally only the new Slurm leaf would have been gated pre-merge, because no Tier-2 rule keyed on
kwok/profiles/**. The third commit adds that rule, so a changed profile now promotes every overlay it backs. All seven gb300 overlays ran in this PR's own Tier 2 and passed, rather than first executing post-merge. What still runs only in Tier 3 is the 35 non-helm deployer cells, since Tier 2 is helm-only by ADR-003 policy.Two deliberate divergences from the sibling profiles.
osImageisUbuntu 24.04rather than theAmazon Linux 2023the three other EKS profiles carry: five of the seven overlays this profile backs areos: ubuntuleaves, and the value is captured verbatim into CNCF evidence. And the 8-GPU/p6.48xlargeshape ofp6-gb200.yamlwas not copied — it contradicts its own recipe, which targets a 4-GPUp6e-gb200.36xlarge. The cpu/memory/storage figures are simulator headroom, not datasheet values (AWS publishes no spec for this instance); the file says so, and the two load-bearing fields —gpu.countandarch— are verified against the overlays.Hardware-backed UAT is out of scope and tracked by #2358, which reports that no UAT cell covers
platform: slurmon any accelerator. This leaf inherits that pre-existing gap rather than introducing it, so its recipe-health evidence column readspending. KWOK coverage is added here.Testing
Several
pkg/recipetests enumerate Slurm leaves by name, so the new leaf would have been silently uncovered. Added it to the GRES/task-cgroup, conformance-checks, shared-storage, enroot, cleared-performance and NFD-topology tables, plus a deployment-order guard for the DRA-driver-before-Slurm edge.TestGB200EKSSlurmWiresIMEXComputeDomainwas generalized toTestGPUSlurmLeavesWireIMEXComputeDomain, table-driven over both IMEX-capable leaves. Mutation-verified: typoingresourceClaimTemplateNameor deletingSwitchTypenow fails the gb300 subtest by name, where previously only an opaque golden digest moved — and regenerating goldens is routine enough to launder that away.Coverage: no per-package decrease; the change is recipe data plus test-table entries.
Risk Assessment
Rollout notes: Additive. No existing recipe changes — verified that no other leaf's golden digest moves. The one broader effect is CI cost: ~42 new KWOK Tier-3 cells from the profile, all passing locally.
Checklist
make testwith-race)make lint)git commit -S)