# Cerebras: Major incident: Partial Service Disruption

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2025-04-08 00:28 UTC · Detected: 2026-10-19 17:03 UTC
- [Source: https://stspg.io/1608ctmkxqcw](https://stspg.io/1608ctmkxqcw)
- [Company: Cerebras](https://rewindex.com/company/cerebras.md)
- Versions: before (none: first archived) → after incident\_version:665/phmc8msprxqm@a52a3c08ad1b
- Change 1 of 1 for this incident

Incident page (full timeline): [Partial Service Disruption](https://rewindex.com/company/cerebras/incidents/phmc8msprxqm.md)
## What changed

**1. Added: Title**

```diff
+ Partial Service Disruption
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-04-08 00:28 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-04-08 04:19 UTC
```

**6. Added: Affected components**

```diff
+ Llama3.1-8B
```

**7. Added: Update** (investigating) · 2025-04-08 00:28 UTC

```diff
+ Some features may be temporarily unavailable. We are currently working to resume normal service performance. We will provide further updates as we make progress.
```

**8. Added: Update** (monitoring) · 2025-04-08 03:48 UTC

```diff
+ We've deployed the fix and Llama3.1-8B is now recovering. We are actively monitoring service performance.
```

**9. Added: Update** (investigating) · 2025-04-08 04:18 UTC

```diff
+ Between 00:28 UTC and 02:58 UTC users experienced partial degradation with Llama3.1-8B. We have deployed a fix and the issue is now resolved.
```

**10. Added: Update** (resolved) · 2025-04-08 04:19 UTC

```diff
+ Between 00:28 UTC and 02:58 UTC users experienced partial degradation with Llama3.1-8B. We have deployed a fix and the issue is now resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-04-08 00:28 UTC | Major incident: Partial Service Disruption (this change) | major |

All Cerebras changes: [timeline](https://rewindex.com/company/cerebras/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i660701a0074aff · Markdown: https://rewindex.com/change/i660701a0074aff.md · JSON: https://rewindex.com/api/v1/changes/i660701a0074aff · Generated 2026-10-20T00:00:38.978Z