CoreWeave incident
Backend fabric performance degradation in US-CENTRAL-08A
Resolved after 3 hours 23 minutes, affecting Coreweave Network and CoreWeave Networking (CoreWeave Networking — US-CENTRAL-08A), on September 3, 2026.
Hello, We have identified the issue affecting the backend GPU interconnect in US-CENTRAL-08A and mitigation is in progress. Multi-node GPU workloads may still see reduced bandwidth or increased latency while we complete this work. We will update you as the situation develops. We appreciate your patience as we work through this. Thank You, CoreWeave Support
Affected components
Update timeline
- identified Sep 03, 2026, 08:02 PM UTC
Hello, We are investigating degraded performance on the backend GPU interconnect fabric in US-CENTRAL-08A. Multi-node GPU workloads may see reduced bandwidth or increased latency. Our engineering team is actively working on this. We will provide updates as the situation develops. If you have any questions, please reach out to our support team at [email protected] or raise an inquiry in your dedicated Slack channel. Thank You, CoreWeave Support
- identified Sep 03, 2026, 09:48 PM UTC
Hello, We have identified the issue affecting the backend GPU interconnect in US-CENTRAL-08A and mitigation is in progress. Multi-node GPU workloads may still see reduced bandwidth or increased latency while we complete this work. We will update you as the situation develops. We appreciate your patience as we work through this. Thank You, CoreWeave Support
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