Can't use xeus-cpp with eigen

[tlwang147]

Hi developers i have deployed xeus-cpp and jupyter on my server. When I use it on my laptop, such code

#include <iostream>
#include <eigen3/Eigen/Core>
#include <eigen3/Eigen/Eigenvalues>
Eigen::MatrixXd a(3, 3);
a << 1,2,3,
     2,4,7,
     3,7,1;
std::cout << a << std::endl;

runs as expected:

1 2 3
2 4 7
3 7 1

However if I run

Eigen::SelfAdjointEigenSolver<Eigen::MatrixXd> es(a);
std::cout << es.eigenvalues() << std::endl;
std::cout << es.eigenvectors() << std::endl;

it says the kernel appeared to have died. But the same code works in clang-repl.

[jiiongchen]

I've met the question as you too.

[anutosh491]

Hi @tlwang147 @jiiongchen

I am guessing y'all tried the native kernel and not the wasm kernel ?

You should be able to achieve this through the wasm kernel. I just tried it out with a mamba install magic command !

You should be able to achieve it through this link.
https://compiler-research.org/xeus-cpp/lab/index.html

[tlwang147]

I get xeus-cpp from conda-forge. Is it native or wasm?