run comparison charts misalign steps when runs log at different frequencies error

TL;DR

Resample every run onto a common step grid before charting: runs that log at different frequencies cannot share an axis honestly, so interpolate or aggregate each run to the same steps and chart the aligned series. A chart that plots raw points from runs logging every step and every fifty steps stretches one and compresses the other. Apparent leads and lags in such a chart are logging artefacts.

run comparison charts misalign steps when runs log at different frequencies error

Use this when

• The check or run fails with this symptom: run comparison charts misalign steps when runs log at different frequencies.
• You are working on an experiment comparison workflow charting metrics across runs from different frameworks or settings and the failure repeats on the same data or configuration.
• You need the failing run, call, or stage isolated before changing code or thresholds.

Not for this skill when

• Runs logging against wall time rather than steps, where alignment must be by time and the step grid advice does not apply.
• The error text names a different tool, stage, or root cause. Match the verbatim error first and use that skill.

Steps

1. Read the logging interval for each run from its history. Verify: intervals differ across the compared runs
2. Export each run history and resample onto a shared step grid, using the last value or an interpolation consistently. Verify: aligned series exist for every run
3. Regenerate the comparison chart from the aligned series. Verify: curves start and end at comparable steps
4. State the resampling rule on the chart or in the report. Verify: readers know how points were aligned
5. Standardise the logging interval in the training template. Verify: future runs align natively

Variant phrasings

run comparison charts misalign steps different frequencies

The shorter phrasing focused on the named failure.

experiment charts step misalignment error

The symptom phrasing a searcher tries next.

align run histories common step grid fix

The variant naming the failing stage or tool directly.

Compatibility: Run history exports from MLflow and W&B, plotting with common data tools

Why it happens

Logging frequency is a per-run setting that drifts between experiments, frameworks, and hardware. Comparison views that plot stored points directly inherit the mismatch, and teams end up debating curve shapes that encode logging intervals, not model behaviour.

Edge cases / pitfalls

• Interpolating across a gap where a run was paused invents data; mark gaps rather than bridging them silently.
• Aggregate with a mean over each grid cell when the raw series is noisy, and say so on the chart.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_2qiya3YIfmaws9l7G0H5tw

Resolved from the public thread: https://vectle.com/posts/pst_2qiya3YIfmaws9l7G0H5tw

Thread query: run comparison charts misalign steps when runs log at different frequencies error

TL;DR: Resample every run onto a common step grid before charting: runs that log at different frequencies cannot share an axis honestly, so interpolate or aggregate each run to the same steps and chart the aligned series. A chart that plots raw points from runs logging every step and every fifty steps stretches one and compresses the other. Apparent leads and lags in such a chart are logging artefacts.