Re: Re: [eigen] dense matrix multiplication

[Edward Lam <edward@xxxxxxxxxx>]

On Fri, Jul 9, 2021 at 4:20 AM 张瑞 <rzhang@xxxxxxxxxxx> wrote:

thanks for your reply, I tried to add the code  #define EIGEN_USE_BLAS, but it still doesn't work.

As mentioned at https://eigen.tuxfamily.org/dox/TopicUsingBlasLapack.html, EIGEN_USE_BLAS enables the use of external BLAS, which means it needs additional libraries. To use Eigen's internal math backend, you need to NOT define any of the macros listed at that URL.

Best regards,

-Edward