misc: Add LULESH GPU tests (#256)

Adds the LULESH GPU Tests to our GitHub Actions infrastructure

Co-authored-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Co-authored-by: Harshil Patel <harshilp2107@gmail.com>

.github/workflows/gpu-tests.yaml

@@ -1,7 +1,9 @@
 ---
-# This workflow runs all of the very-long tests within main.py
+# This workflow runs all the Weekly GPU Tests.
+# For now this file is kept separate as we are still developing and testing
+# this workflow. It will eventually be merged with "weekly-tests.yaml"
 
-name: Weekly Tests
+name: Weekly Tests (GPU)
 
 on:
   # Runs every Sunday from 7AM UTC
@@ -29,6 +31,39 @@ jobs:
                   retention-days: 5
             - run: echo "This job's status is ${{ job.status }}."
 
+    LULESH-tests:
+        runs-on: [self-hosted, linux, x64]
+        container: ghcr.io/gem5-test/gcn-gpu:latest
+        needs: build-gem5
+        timeout-minutes: 480 # 8 hours
+        steps:
+            - uses: actions/checkout@v3
+              with:
+                # Scheduled workflows run on the default branch by default. We
+                # therefore need to explicitly checkout the develop branch.
+                  ref: develop
+
+            - name: Download build/GCN3_X86/gem5.opt
+              uses: actions/download-artifact@v3
+              with:
+                  name: weekly-test-${{ github.run_number }}-attempt-${{ github.run_attempt }}-gem5-build-gcn3
+                  path: build/GCN3_X86
+                # `download-artifact` does not preserve permissions so we need to set
+                # them again.
+            - run: chmod u+x build/GCN3_X86/gem5.opt
+
+            - name: Obtain LULESH
+              working-directory: ${{ github.workspace }}/lulesh
+              # Obtains the latest LULESH compatible with this version of gem5 via
+              # gem5 Resources.
+              run: build/GCN3_X86/gem5.opt util/obtain-resource.py lulesh -p lulesh
+
+            - name: Run LULUESH tests
+              working-directory: ${{ github.workspace }}
+              run: |
+                  build/GCN3_X86/gem5.opt configs/example/apu_se.py -n3 --mem-size=8GB --reg-alloc-policy=dynamic --benchmark-root="lulesh" -c \
+                  lulesh 0.01 2
+
     HACC-tests:
         runs-on: [self-hosted, linux, x64]
         container: ghcr.io/gem5/gcn-gpu:latest