Mark Bates comments

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                                            Mark Bates

Can GPU fit handle functions that returns vectors instead of a single value?

Yes, you can use the standard estimator.

Can GPU fit handle functions that returns vectors instead of a single value?

Great. Yes that would be helpful - we could add it to the docs. Post back here if you need any more guidance. You might want to create a simple...

Can GPU fit handle functions that returns vectors instead of a single value?

I think it should be something more like this. This really depends on how you are passing the data into Gpufit. Below, I assume that the data is interleaved -...

Can GPU fit handle functions that returns vectors instead of a single value?

So, if your function is f(x,y,z) = (P0 * x + P1 * y, P0 * y + P2 * z) Then you just have to choose how you want...

Can GPU fit handle functions that returns vectors instead of a single value?

If you have unequal numbers of X, Y, and Z values, then you would also have to specify the number of X, Y, and Z points to the model function,...

Can GPU fit handle functions that returns vectors instead of a single value?

If your function lives in a three dimensional space, then the total data size must be N_x * N_y * N_z, where N_x is the number of X coordinates, etc....

Can GPU fit handle functions that returns vectors instead of a single value?

The multi-dimensionality makes this "toy" model more complicated, but I think this is what you want. ``` __device__ void calculate_vector_function( float const * parameters, int const n_fits, int const n_points,...

Can GPU fit handle functions that returns vectors instead of a single value?

Note that my modified example may not be the fastest solution - it is meant for illustrating the point. Also, the modulo operator is supposedly slow in CUDA.

Adding models that don't require a derivative

In the short term, I agree it would make sense to include an example model in which the derivatives are computed numerically. Even if the model is trivial with analytic...

Adding models that don't require a derivative

Regarding Jaxfit, I'd note that the package is designed to compute a single fit operation in each call, whereas Gpufit is designed for the parallel execution of large numbers of...