No. We don’t rely on numpy to do math operations. Instead, both Pytorch and numpy use blas/lapack library calls.
Try use torch.svd. It is only available when mkl is installed.
The linalg operations use blas interface provided by mkl, e.g. svd.
The difference can be a lot on linalg operations, e.g. addmm that is used by linear layer. I think the way to enable/disable is to install/uninstall unfortunately.