ci: test with intel gpus

Author: avik-pal

.buildkite/pipeline.yml

@@ -1,7 +1,7 @@
 steps:
-  - group: ":test_tube: Tests"
+  - group: ":test_tube: CUDA Tests"
     steps:
-      - label: ":julia: :linux: CUDA Julia v{{matrix.version}} -- {{matrix.group}} -- {{matrix.runtime}}"
+      - label: ":julia: :linux: Julia v{{matrix.version}} -- {{matrix.group}} -- {{matrix.runtime}}"
         matrix:
           setup:
             version:
@@ -48,6 +48,54 @@ steps:
         if: build.message !~ /\[skip tests\]/
         timeout_in_minutes: 120
 
+  - group: ":test_tube: Intel GPU (SYCL) Tests"
+    steps:
+      - label: ":julia: :linux: Julia v{{matrix.julia}} -- {{matrix.group}} -- {{matrix.runtime}}"
+        matrix:
+          setup:
+            version:
+              - "1.10"
+            group:
+              - core
+            runtime:
+              - "PJRT"
+              - "IFRT"
+        plugins:
+          - JuliaCI/julia#v1:
+              version: "{{matrix.version}}"
+          - JuliaCI/julia-coverage#v1:
+              codecov: true
+              dirs:
+                - src
+                - ext
+                - lib/ReactantCore/src
+        commands: |
+          touch LocalPreferences.toml
+
+          echo "[Reactant]" >> LocalPreferences.toml
+          echo "xla_runtime = \"{{matrix.runtime}}\"" >> LocalPreferences.toml
+
+          cat LocalPreferences.toml
+
+          julia --project=. -e 'println("--- :julia: Instantiating project")
+              using Pkg
+              Pkg.develop([PackageSpec(path="lib/ReactantCore")])'
+
+          julia --project=. -e 'println("--- :julia: Run Tests")
+              using Pkg
+              Pkg.test(; coverage="user")'
+        env:
+          REACTANT_TEST_GROUP: "{{matrix.group}}"
+          JULIA_DEBUG: "Reactant,Reactant_jll"
+          REACTANT_BACKEND_GROUP: "GPU"
+          REACTANT_TEST_ONLY_PLUGIN: "true"
+        agents:
+          queue: "juliagpu"
+          intel: "*"
+        if: build.message !~ /\[skip tests\]/
+        timeout_in_minutes: 60
+
+
   # - group: ":racehorse: Benchmarks"
   #   steps:
   #     - label: "CPU: Run Benchmarks"

test/runtests.jl

@@ -5,6 +5,9 @@ if lowercase(get(ENV, "REACTANT_BACKEND_GROUP", "all")) == "gpu"
 end
 
 const REACTANT_TEST_GROUP = lowercase(get(ENV, "REACTANT_TEST_GROUP", "all"))
+const REACTANT_TEST_ONLY_PLUGIN = parse(
+    Bool, get(ENV, "REACTANT_TEST_ONLY_PLUGIN", "false")
+)
 
 @testset "Reactant.jl Tests" begin
     if REACTANT_TEST_GROUP == "all" || REACTANT_TEST_GROUP == "core"
@@ -16,30 +19,32 @@ const REACTANT_TEST_GROUP = lowercase(get(ENV, "REACTANT_TEST_GROUP", "all"))
             @safetestset "Intel XPU Plugin" include("plugins/sycl.jl")
         end
 
-        @safetestset "Layout" include("layout.jl")
-        @safetestset "Tracing" include("tracing.jl")
-        @safetestset "Basic" include("basic.jl")
-        @safetestset "Autodiff" include("autodiff.jl")
-        @safetestset "Complex" include("complex.jl")
-        @safetestset "Broadcast" include("bcast.jl")
-        @safetestset "Struct" include("struct.jl")
-        @safetestset "Closure" include("closure.jl")
-        @safetestset "Compile" include("compile.jl")
-        @safetestset "IR" include("ir.jl")
-        @safetestset "Buffer Donation" include("buffer_donation.jl")
-        @safetestset "Shortcuts to MLIR ops" include("ops.jl")
-        @safetestset "Wrapped Arrays" include("wrapped_arrays.jl")
-        @safetestset "Control Flow" include("control_flow.jl")
-        @safetestset "Sorting" include("sorting.jl")
-        @safetestset "Indexing" include("indexing.jl")
-        if !Sys.isapple()
-            @safetestset "Custom Number Types" include("custom_number_types.jl")
+        if !REACTANT_TEST_ONLY_PLUGIN
+            @safetestset "Layout" include("layout.jl")
+            @safetestset "Tracing" include("tracing.jl")
+            @safetestset "Basic" include("basic.jl")
+            @safetestset "Autodiff" include("autodiff.jl")
+            @safetestset "Complex" include("complex.jl")
+            @safetestset "Broadcast" include("bcast.jl")
+            @safetestset "Struct" include("struct.jl")
+            @safetestset "Closure" include("closure.jl")
+            @safetestset "Compile" include("compile.jl")
+            @safetestset "IR" include("ir.jl")
+            @safetestset "Buffer Donation" include("buffer_donation.jl")
+            @safetestset "Shortcuts to MLIR ops" include("ops.jl")
+            @safetestset "Wrapped Arrays" include("wrapped_arrays.jl")
+            @safetestset "Control Flow" include("control_flow.jl")
+            @safetestset "Sorting" include("sorting.jl")
+            @safetestset "Indexing" include("indexing.jl")
+            if !Sys.isapple()
+                @safetestset "Custom Number Types" include("custom_number_types.jl")
+            end
+            @safetestset "Sharding" include("sharding.jl")
+            @safetestset "Comm Optimization" include("optimize_comm.jl")
+            @safetestset "Cluster Detection" include("cluster_detector.jl")
+            @safetestset "Config" include("config.jl")
+            @safetestset "Batching" include("batching.jl")
         end
-        @safetestset "Sharding" include("sharding.jl")
-        @safetestset "Comm Optimization" include("optimize_comm.jl")
-        @safetestset "Cluster Detection" include("cluster_detector.jl")
-        @safetestset "Config" include("config.jl")
-        @safetestset "Batching" include("batching.jl")
     end
 
     if REACTANT_TEST_GROUP == "all" || REACTANT_TEST_GROUP == "integration"