Switch CI to self-hosted runners and parallelize tests to fix TF CPU timeouts - #2856
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divyashreepathihalli
approved these changes
Jul 23, 2026
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Description of the change
The Test the code (tensorflow, keras-stable) job has been consistently timing out on GitHub Actions, running 6+ hours without completing on every PR and master, while JAX and Torch finish in 80-90 minutes.
Root Cause
TF eager mode on CPU is significantly slower for the repeated model instantiation pattern in KerasHub tests
Test suite has grown ~80 model families, all running sequentially on a 2-core ubuntu-latest runner
No timeout-minutes was set, so jobs run the full 6-hour GitHub default before being killed
Checklist