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fix: stop backfilling Harbor usage from ATIF - #461
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mnajafian-nv merged 10 commits intoOct 20, 2026
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Harbor's complete accounting fields (n_input_tokens, n_cache_tokens, n_output_tokens, cost_usd) now come only from NeMo Fabric's normalized usage. When a result exists, every dimension is assigned from that usage, so an unknown dimension clears a value an earlier pass left behind and a reported zero stays zero. When the runner exits without a result, the bridge leaves the fields unset. ATIF final_metrics can cover a different scope (subagents) and a different cache convention than the invocation, so filling unknown fields from them presented unverified totals as complete. They are now kept under metadata.fabric.atif_final_metrics with source "atif" and coverage "unverified". Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
The Harbor integration and Claude adapter READMEs said a trajectory fills the counts a result leaves unknown. State the current contract: unknown counts stay unknown, zeros stay zero, and ATIF totals are kept separately in Fabric metadata. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
populate_context_from_result replaced metadata["fabric"] wholesale, so a result or runner-failure pass that ran after the trajectory pass deleted atif_final_metrics and harbor_atif_validation. Replace only the result fields of the current pass and keep the bridge's ATIF evidence. Result identities and runner_error from an earlier pass are still dropped. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
When the runner wrote no result, or wrote a runner_error record, the bridge left the four accounting fields as it found them. Harbor only passes an empty context, but a caller with a populated context kept values no Fabric result supports. Clear them on both paths so the outcome does not depend on the context the helper receives. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
The bridge now sets the four accounting fields to None when no Fabric result exists, rather than leaving them as it found them. Match the Harbor integration README to that behavior. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
telemetry_validation is evidence the bridge records beside the result, like the ATIF records. A result or runner-failure pass that ran after the telemetry summary still deleted it. Add it to the keys that _replace_result_metadata keeps. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
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WalkthroughHarbor accounting now uses Fabric usage values without backfilling unknown fields from ATIF metrics. Missing or failed results clear accounting values. ATIF final metrics remain separate, unverified metadata. ChangesHarbor accounting semantics
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant Harbor as Harbor context
participant Fabric as Fabric result handling
participant ATIF as ATIF evidence
Fabric->>Harbor: Set accounting fields from Fabric usage
ATIF->>Harbor: Store final metrics as unverified metadata
Fabric->>Harbor: Clear accounting fields when no valid result exists
Merge Risk: ⚪ Minimal · up to
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| Check name | Status | Explanation | Resolution |
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Docstring coverage is 26.32% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 19 functions across 4 files. | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Title check The title follows Conventional Commits format with the allowed lowercase type "fix", a concise imperative summary, no trailing period, and 44 characters. It accurately describes the Harbor accounting … Description check The description includes the required Overview, reviewer starting point, Related Issues section with an accepted action keyword, contribution confirmation, and duplicate-work confirmation. It clearly … Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request. Full details: Title check
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The title follows Conventional Commits format with the allowed lowercase type "fix", a concise imperative summary, no trailing period, and 44 characters. It accurately describes the Harbor accounting change.
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The description includes the required Overview, reviewer starting point, Related Issues section with an accepted action keyword, contribution confirmation, and duplicate-work confirmation. It clearly explains the implementation, compatibility impact, limitations, and validation results.
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Fern docs preview: https://nvidia-preview-pull-request-461.docs.buildwithfern.com/nemo/fabric |
Harbor aggregates skip unknown values, so displayed totals may be partial. Remove the comment that calls Fabric usage complete and document the reporting limitation. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
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agent-generated: Optional documentation improvement: Please copy the PR description’s warning about incomplete Harbor aggregates into the Harbor integration README. Harbor totals skip unknown values, so displayed totals may understate overall usage or cost. Keeping this caveat in the README would help users interpret benchmark reports correctly. |
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AnuradhaKaruppiah
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Oct 20, 2026
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Review comments at @tests/integrations/test_harbor_runner.py:
- Line 710: Add assertions in the test around the atif_final_metrics metadata to
require coverage to equal "unverified" and verify that the final_metrics payload
is retained, while preserving the existing source assertion.
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Review Python SDK changes for typed API consistency, import-time dependency neutrality, async/session behavior, and parity with the native extension.
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Thanks, I’ve already added that caveat to the Harbor integration README: Harbor totals skip unknown values, so reported usage or cost may be incomplete. |
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
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Overview
When a NeMo Fabric result leaves a Harbor accounting field unknown, the Harbor bridge fills it from the ATIF trajectory's
final_metrics. Those totals are a different measurement. Relay can preserve subagent usage in embedded child trajectories, but the root trajectory totals exclude those children and can be partial. A Relay trajectory can also cover different calls than the adapter's invocation, and nothing checks its cache convention against the result. One run could show input from Fabric and cost from ATIF, presented together as one complete invocation total.This PR makes
RunResult.usagethe only source forn_input_tokens,n_cache_tokens,n_output_tokensandcost_usd.Details
None, even when an earlier pass left a value in the context. Reported zeros stay zero, andusage: nullleaves all four unknown.None.final_metricsare kept undermetadata.fabric.atif_final_metricswithsource: "atif"andcoverage: "unverified". That record, the Harbor ATIF validation and the telemetry validation are bridge-owned: a later result or runner-failure pass replaces only result-owned fields, so they survive in any pass order while stale result identities andrunner_errorfields are removed.Compatibility: Harbor no longer fills unknown Fabric usage or cost fields from unverified ATIF totals. Reports can therefore show unknown values where earlier versions displayed a number. The ATIF values remain available separately, but are not presented as complete invocation totals. Reported zeros remain zero.
Reporting limitation: Native Harbor trial and job totals sum available values and skip unknown fields. A displayed total can therefore omit usage or cost from steps or trials with unknown values. Do not interpret these aggregates as complete benchmark usage or expenditure when any contributing value is unknown.
Validation
tests/adapters/test_claude_adapter.py: 274 passed. 28 of the changed or new cases fail onmain.Where should the reviewer start?
populate_context_from_resultandpopulate_context_from_trajectoryinsdk/python/nemo-fabric-runtime/src/nemo_fabric/integrations/harbor/fabric_agent.py, thentests/python/test_harbor_accounting.py.Related Issues: (use one of the action keywords Closes / Fixes / Resolves / Relates to)
Relates to fix: preserve invocation accounting in Harbor runs #371
Merge before fix: preserve Codex usage when a turn fails #440, fix: keep NOOA BenchAgent token usage on failed tasks #447 and fix: isolate NOOA interactive usage per invocation #453, which leave more Fabric usage unknown.
I confirm this contribution is my own work, or I have the right to submit it under this project's license.
I searched existing issues and open pull requests, and this does not duplicate existing work.
Summary by CodeRabbit
Bug Fixes
Documentation