Add GPUArraysCore dependency and CPU backend support for downgrade CI

.github/workflows/CI.yml

@@ -0,0 +1,30 @@
+name: CI
+on:
+  pull_request:
+    branches:
+      - master
+    paths-ignore:
+      - 'docs/**'
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'docs/**'
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        julia-version: ['1.10']
+        group: [CPU]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: ${{ matrix.julia-version }}
+      - uses: julia-actions/cache@v2
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1
+        env:
+          GROUP: ${{ matrix.group }}

Project.toml

@@ -9,6 +9,7 @@ ChainRulesCore = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"
 DiffEqBase = "2b5f629d-d688-5b77-993f-72d75c75574e"
 Distributed = "8ba89e20-285c-5b6f-9357-94700520ee1b"
 DocStringExtensions = "ffbed154-4ef7-542d-bbb7-c09d3a79fcae"
+GPUArraysCore = "46192b85-c4d5-4398-a991-12ede77f4527"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
 KernelAbstractions = "63c18a36-062a-441e-b654-da1e3ab1ce7c"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
@@ -44,6 +45,7 @@ ChainRulesCore = "1"
 DiffEqBase = "6.122"
 DocStringExtensions = "0.8, 0.9"
 ForwardDiff = "0.10, 1"
+GPUArraysCore = "0.1, 0.2"
 KernelAbstractions = "0.9"
 LinearSolve = "1.15, 2, 3"
 Metal = "0.5, 1"

src/ensemblegpukernel/integrators/integrator_utils.jl

@@ -360,7 +360,7 @@ end
 end
 
 # interp_points = 0 or equivalently nothing
-@inline function DiffEqBase.determine_event_occurance(
+@inline function DiffEqBase.determine_event_occurrence(
         integrator::DiffEqBase.AbstractODEIntegrator{
             AlgType,
             IIP,

test/utils.jl

@@ -11,6 +11,9 @@ elseif GROUP == "oneAPI"
 elseif GROUP == "Metal"
     using Metal
     Metal.MetalBackend()
+elseif GROUP == "CPU"
+    using KernelAbstractions
+    KernelAbstractions.CPU()
 end
 
 import GPUArraysCore