[ci] Add chipyard-gpu-flow based off of chipyard-full-flow

This is supposed to be a much more minimal workflow.

.github/workflows/chipyard-gpu-flow.yml

@@ -0,0 +1,112 @@
+name: chipyard-ci-full-flow
+
+on:
+  push:
+    branches:
+      - graphics
+
+defaults:
+  run:
+    shell: bash -leo pipefail {0}
+
+env:
+  REMOTE_WORK_DIR: ${{ secrets.BUILDDIR }}/cy-ci-shared/cy-${{ github.sha }}
+  JAVA_TMP_DIR: /tmp/cy-${{ github.sha }}-full
+  MAKEFLAGS: "-j32"
+
+jobs:
+  cancel-prior-workflows:
+    name: cancel-prior-workflows
+    runs-on: ubuntu-latest
+    steps:
+      - name: Cancel Previous Runs
+        uses: styfle/cancel-workflow-action@0.11.0
+        with:
+          access_token: ${{ github.token }}
+
+  # Set up a set of boolean conditions to control which branches of the CI
+  # workflow will execute This is based off the conditional job execution
+  # example here: https://github.com/dorny/paths-filter#examples
+  change-filters:
+    name: filter-jobs-on-changes
+    runs-on: ubuntu-latest
+    # Queried by downstream jobs to determine if they should run.
+    outputs:
+      needs-rtl: ${{ steps.filter.outputs.all_count != steps.filter.outputs.skip-rtl_count }}
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Git workaround
+        uses: ./.github/actions/git-workaround
+      - uses: dorny/paths-filter@v2
+        id: filter
+        with:
+          filters: |
+            all:
+              - '**'
+
+            # If any of the files changed match, do a doc build
+            docs: &docs-filter
+              - 'docs/**'
+              - '.readthedocs.yml'
+
+            # If all files match to this filter, skip the main ci pipeline
+            skip-rtl:
+              - *docs-filter
+              - '**/*.md'
+              - '**/.gitignore'
+              - '.github/ISSUE_TEMPLATE/**'
+
+  setup-repo:
+    name: setup-repo
+    needs: [change-filters, cancel-prior-workflows]
+    if: needs.change-filters.outputs.needs-rtl == 'true'
+    runs-on: self-hosted
+    steps:
+      - name: Delete old checkout
+        run: |
+            ls -alh .
+            rm -rf ${{ github.workspace }}/* || true
+            rm -rf ${{ github.workspace }}/.* || true
+            ls -alh .
+      - uses: actions/checkout@v3
+      - name: Setup repo copy
+        run: |
+          git clone $GITHUB_WORKSPACE ${{ env.REMOTE_WORK_DIR }}
+      - name: Setup repo
+        run: |
+          cd ${{ env.REMOTE_WORK_DIR }}
+          mkdir ${{ env.JAVA_TMP_DIR }}
+          ./build-setup.sh -f -v
+
+  run-coalescer:
+    name: run-coalescer
+    needs: [setup-repo]
+    runs-on: self-hosted
+    steps:
+      - name: Build RTL
+        run: |
+          cd ${{ env.REMOTE_WORK_DIR }}
+          eval "$(conda shell.bash hook)"
+          source env.sh
+          cd sims/verilator
+          make verilog CONFIG=MemtraceCoreConfig
+      - name: Run RTL sim
+        run: |
+          cd ${{ env.REMOTE_WORK_DIR }}
+          eval "$(conda shell.bash hook)"
+          source env.sh
+          cd sims/verilator
+          make run-binary run_binary CONFIG=MemtraceCoreConfig BINARY=none EXTRA_SIM_FLAGS="+memtracefile=$LOCAL_CHIPYARD_DIR/generators/rocket-gpu/tracefiles/vecadd.core1.thread4.trace"
+
+
+  cleanup:
+    name: cleanup
+    needs: [run-coalescer]
+    runs-on: self-hosted
+    if: ${{ always() }}
+    steps:
+      - name: Delete repo copy and conda env
+        run: |
+           rm -rf ${{ env.REMOTE_WORK_DIR }}
+           rm -rf ${{ env.JAVA_TMP_DIR }}