Use the Eigen Linear Algebra Library on Arm: Review

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What you've learned

You should now know how to:

Does Eigen use SIMD code all the time for best performance?

Yes, always.

No, it can be disabled with -DEIGEN_DONT_VECTORIZE.

Sometimes, it does runtime detection.

Eigen offers the following types by default:

Vector and Matrix, Tensor is an unsupported module at the moment.

Vector only, Matrix and Tensor are unsupported.

Vector, Matrix, and Tensor.

Tensor, all the others are subclasses.

Does linear algebra code benefit from large SVE vectors?

Yes, linear algebra benefits from large vectors.

No, it makes no difference.

Maybe, it depends on the implementation.

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