Christopher Rackauckas

Failure to Precompile

2

I am getting the following error: ``` julia julia> using ASTInterpreter INFO: Precompiling module ASTInterpreter. ERROR: LoadError: UndefVarError: LambdaInfo not defined in include_from_node1(::String) at .\loading.jl:532 in include(::String) at .\sysimg.jl:14 in...

Issues with backpropagation and adjoint construction

7

I couldn't get either methods for adjoint generation working over the `@parallel` stencil. For pure Zygote-based VJP calculations, ```julia @parallel function diffusion3D_step!(T2, T, Ci, lam, dx, dy, dz) @inn(T2) =...

Test against cudnn?

23

I'm curious what GPU performance you get against something like the cudnn wrappers of NNlibCUDA.jl. Those would be more appropriate comparisons than CuArray broadcasting.

Defining a Parameter/Structures Interface

11

Guiding issues: - https://github.com/SciML/ModelingToolkit.jl/issues/318 - https://github.com/SciML/ModelingToolkit.jl/issues/1088 - https://github.com/SciML/ModelingToolkit.jl/issues/1678 - https://github.com/SciML/NeuralPDE.jl/issues/533 - https://github.com/FluxML/Optimisers.jl/issues/95 - https://discourse.julialang.org/t/parameter-types-in-diffeqflux-jl-versus-differentialequations-jl/79635 - https://github.com/SciML/DiffEqBase.jl/pull/773 Guiding designs: - https://github.com/FluxML/Functors.jl - https://github.com/Metalenz/FlexibleFunctors.jl (https://discourse.julialang.org/t/ann-flexiblefunctors-jl-functors-with-per-instance-parameters/64935) - https://github.com/rafaqz/ModelParameters.jl - https://github.com/rafaqz/Flatten.jl - https://github.com/invenia/ParameterHandling.jl -...

22 seconds to 3 and now more: Let's fix all of the DifferentialEquations.jl + universe compile times!

30

# Take awhile to precompile with style all of the DiffEq stack, no denial Our goal is to get the entire DiffEq stack compile times down. From now on we...

Change return codes to Enum

2

This is safer than using Symbols as was originally done, but it's also breaking to make this change. When should we do it? I've been waiting to make this one...

Rethinking the linear solver and Jacobian interface

3

With the new advanced ODE solving tutorial, one thing that has become more clear is that we need to think about how we're doing some of the linear solver pieces....

Multi-unit handling

7

We want codes like this to work: ```julia using DifferentialEquations, Unitful function g(dydt, y, p, t) dydt[1] = -p[1] / p[2] * sin(y[2]) dydt[2] = y[1] end tspan = (0.0u"s",4.0u"s")...

https://discourse.julialang.org/t/simulating-a-stopping-time-in-sde-without-using-a-fixed-time-span/45608/4 brings up an interesting issue that goes as follows. `terminate!` works by removing all current `tstops` to then cause the integration to leave. But if someone does `terminate!` and...

```julia using RecursiveArrayTools, OrdinaryDiffEq, SparseArrays function abundance_(dn,n,p,t) nh, nu = n dnh = dn[1] dnu = dn[2] for i in 1:N # choose species competition = 0 for k in...