# Arm64 builds failing blas tests - did the hardware change recently?

**URL:** <https://travis-ci.community/t/arm64-builds-failing-blas-tests-did-the-hardware-change-recently/11813>\
**Category:** Linux\
**Tags:** arm64\
**Created:** [July 6, 2021, 8:57am UTC](https://travis-ci.community/t/arm64-builds-failing-blas-tests-did-the-hardware-change-recently/11813 "2021-07-06T08:57:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mattip](https://sea1.discourse-cdn.com/flex015/user_avatar/travis-ci.community/mattip/32/887_2.png) [@mattip](https://travis-ci.community/u/mattip)\
**Post date:** [July 6, 2021, 8:57am UTC](https://travis-ci.community/t/arm64-builds-failing-blas-tests-did-the-hardware-change-recently/11813/1 "2021-07-06T08:57:47Z")

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Five days ago the [numpy builds on arm64](https://travis-ci.com/github/numpy/numpy/builds) started failing. This is also common to the scikit-learn builds and others. What changed? Here is the NumPy issue [numpy.linalg.LinAlgError: Eigenvalues did not converge on ARM64 builds · Issue #19411 · numpy/numpy · GitHub](https://github.com/numpy/numpy/issues/19411)

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**Author:** ![junaruga](https://sea1.discourse-cdn.com/flex015/user_avatar/travis-ci.community/junaruga/32/8943_2.png) [@junaruga](https://travis-ci.community/u/junaruga)\
**Post date:** [July 9, 2021, 12:57pm UTC](https://travis-ci.community/t/arm64-builds-failing-blas-tests-did-the-hardware-change-recently/11813/2 "2021-07-09T12:57:22Z")

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You can try to run the `lscpu` command, and see the result.

As a reference, here is the result of `lscpu` a month ago. You can compare your result with this.  
[https://travis-ci.com/github/junaruga/ci-multi-arch-native-test/jobs/511742760#L108](https://travis-ci.com/github/junaruga/ci-multi-arch-native-test/jobs/511742760#L108)