PDEsystems has version conflict?

Specific Domains Modelling & Simulations
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1

I am new to Julia. I installed today the latest version of Julia, Atom and Juno and the packages to run the examples on the NeuralPDE.jl website. I cannot run any command from the package ModelingToolkit that uses “PDESystems”. I leave below a link to the example code and another link to a discussion about the same error I am getting. It appears that this is a version issue, but all my packages and Julia versions are up to date (I installed everything today).

The link to the example is here

Link to the same issue I am having

Exact error I get:

MethodError: no method matching PDESystem(::Equation, ::Vector{Equation}, ::Vector{Symbolics.VarDomainPairing}, ::Vector{Num}, ::Vector{Sym{SymbolicUtils.FnType{Tuple, Real}, Nothing}}, ::SciMLBase.NullParameters; name=:pde_system)
Closest candidates are:
  PDESystem(::Any, ::Any, ::Any, ::Any, ::Any, ::Any; defaults, connection_type) at C:\Users\Username\.julia\packages\ModelingToolkit\yGWxM\src\systems\pde\pdesystem.jl:59 got unsupported keyword argument "name"
  PDESystem(::Any, ::Any, ::Any, ::Any, ::Any) at C:\Users\Username\.julia\packages\ModelingToolkit\yGWxM\src\systems\pde\pdesystem.jl:59 got unsupported keyword argument "name"
kwerr(::NamedTuple{(:name,), Tuple{Symbol}}, ::Type, ::Equation, ::Vector{Equation}, ::Vector{Symbolics.VarDomainPairing}, ::Vector{Num}, ::Vector{Sym{SymbolicUtils.FnType{Tuple, Real}, Nothing}}, ::SciMLBase.NullParameters) at error.jl:157
(::Core.var"#Type##kw")(::NamedTuple{(:name,), Tuple{Symbol}}, ::Type{PDESystem}, eqs::Equation, bcs::Vector{Equation}, domain::Vector{Symbolics.VarDomainPairing}, indvars::Vector{Num}, depvars::Vector{Sym{SymbolicUtils.FnType{Tuple, Real}, Nothing}}, ps::SciMLBase.NullParameters) at pdesystem.jl:64
(::Core.var"#Type##kw")(::NamedTuple{(:name,), Tuple{Symbol}}, ::Type{PDESystem}, eqs::Equation, bcs::Vector{Equation}, domain::Vector{Symbolics.VarDomainPairing}, indvars::Vector{Num}, depvars::Vector{Sym{SymbolicUtils.FnType{Tuple, Real}, Nothing}}) at pdesystem.jl:64
top-level scope at untitled-fee6ca1a8cc3740f970fc07e9e7f469a:25
eval at boot.jl:360 [inlined]
2

The link to the example looks fine.
The link to the issue looks suspicious too me. Could you please search for a better one?

3

Just installing packages for your example on 1.7.0-rc3: package manager is downgrading a lot of packages for me.

 [dce04be8] - ArgCheck v2.1.0
  [ec485272] ↓ ArnoldiMethod v0.2.0 ⇒ v0.1.0
  [15f4f7f2] - AutoHashEquals v0.2.0
  [198e06fe] - BangBang v0.3.32
  [9718e550] - Baselet v0.1.1
  [34da2185] ↑ Compat v3.39.0 ⇒ v3.40.0
  [a33af91c] - CompositionsBase v0.1.1
  [8a292aeb] + Cuba v2.2.0
  [667455a9] + Cubature v1.5.1
  [82cc6244] ↓ DataInterpolations v3.7.0 ⇒ v3.6.1
  [244e2a9f] - DefineSingletons v0.1.1
  [c894b116] ↓ DiffEqJump v8.0.0 ⇒ v7.3.1
  [b4f34e82] ↑ Distances v0.10.5 ⇒ v0.10.6
  [ffbed154] ↑ DocStringExtensions v0.8.5 ⇒ v0.8.6
  [5789e2e9] ↑ FileIO v1.11.1 ⇒ v1.11.2
  [19dc6840] + HCubature v1.5.0
  [cd3eb016] ↑ HTTP v0.9.16 ⇒ v0.9.17
  [22cec73e] - InitialValues v0.2.11
  [093fc24a] + LightGraphs v1.3.5
  [1914dd2f] ↑ MacroTools v0.5.8 ⇒ v0.5.9
  [e9d8d322] - Metatheory v1.3.2
  [128add7d] - MicroCollections v0.1.1
  [961ee093] ↓ ModelingToolkit v7.1.2 ⇒ v6.7.1
  [4886b29c] + MonteCarloIntegration v0.0.3
  [315f7962] + NeuralPDE v4.0.1
  [65888b18] ↓ ParameterizedFunctions v5.12.2 ⇒ v5.12.1
  [69de0a69] ↑ Parsers v2.0.6 ⇒ v2.1.2
  [2dfb63ee] ↑ PooledArrays v1.3.0 ⇒ v1.4.0
  [67601950] + Quadrature v1.12.0
  [42d2dcc6] - Referenceables v0.1.2
  [171d559e] - SplittablesBase v0.1.14
  [82ae8749] ↑ StatsAPI v1.0.0 ⇒ v1.1.0
  [2913bbd2] ↑ StatsBase v0.33.12 ⇒ v0.33.13
  [d1185830] ↓ SymbolicUtils v0.18.1 ⇒ v0.16.0
  [0c5d862f] ↓ Symbolics v4.1.0 ⇒ v3.5.1
  [8ea1fca8] ↓ TermInterface v0.2.3 ⇒ v0.1.8
  [ac1d9e8a] - ThreadsX v0.1.8
  [28d57a85] - Transducers v0.4.67
  [3bed1096] + Cuba_jll v4.2.2+0
  [7bc98958] + Cubature_jll v1.0.5+0
  [2381bf8a] ↑ Wayland_protocols_jll v1.18.0+4 ⇒ v1.23.0+0

Looks like NeuralPDE isn’t that up to date.

4

After that and installing a couple more packages the example seems to work for me…

5

Thanks @goerch. The link is safe. I found it by copy pasting the first line of the error I got.

6

@goerch thank you for your response. I have Julia version 1.6.4. I updated all my packages just right now and I still cant get PDESystems to work. Im not sure what to do… Should I change my julia version to 1.7.0-rc3?

7

But it looks like copy&pasta from somewhere(i.e. not a trustworthy site).

8

I’m just a data point. Probably your best bet would be to use a local environment.

9

OK. Ill give that a try. Thanks

10

If you encounter more problems I’ll check with 1.6.4. All the best!

11

Now I’m on 1.6.4 and after some package installing everything works for me still. Will investigate your error message next…

12

I followed this example: https://stackoverflow.com/a/60134591 and now I have ModelingToolkit version 6.7.1 and it runs. Before, just updating was not giving me a later version of ModelingToolkit.

13

Best match to your error message seems to be: https://github.com/SciML/NeuralPDE.jl/issues/131
Not sure what to make of this, though.

14

I don’t do enough Pkg.update() myself;)

BTW: if you are on that old of a version, I’d recommend to upgrade: AFAIU 1.6.x will be the next LTS.

15

Thanks. Im new to Julia; what does AFAIU and LTS mean? :confused:

16

(A)s (F)ar (A)s (I) (U)nderstand and (L)ong (T)erm (S)upport. Gotta love acronyms;)

17

Hahahah OK, that makes sense. Thanks!

18

Yeah, v1.6 is LTS and so we have no intention to support previous versions.