[ci] Use as4 as runner

Author: hansungk

.github/scripts/setup-chipyard.sh

@@ -5,7 +5,7 @@ set -exo pipefail
 CACHE_HIT="${1:-false}"
 
 # github runner knocks out with -jN>=4
-export MAKEFLAGS="-j3"
+export MAKEFLAGS="-j"
 
 cd "${CHIPYARD_DIR}"
 
@@ -18,6 +18,3 @@ if [[ "${CACHE_HIT}" == "true" ]]; then
 else
     ./build-setup.sh riscv-tools --skip-precompile --skip-firesim --skip-marshal
 fi
-
-# don't break make RTL
-# unset MAKEFLAGS

.github/workflows/ci.yml

@@ -7,28 +7,24 @@ on:
 
 jobs:
   chipyard-setup:
-    runs-on: ubuntu-latest
+    runs-on: as4
 
     defaults:
       run:
         # for conda activation
         shell: bash -el {0}
 
     env:
-      # CHIPYARD_DIR: ${{ github.workspace }}/chipyard
-      WORKDIR: /mnt/work
-      CHIPYARD_DIR: /mnt/work/chipyard
+      CHIPYARD_DIR: ${{ github.workspace }}/chipyard
       # flip to force-reset cache
       CACHE_NUMBER: 0
 
     steps:
       - name: Setup system
         run: |
-          cat /proc/cpuinfo
+          cat /proc/cpuinfo | tail -n20
           vmstat -SM
           df -h
-          sudo mkdir -p "${WORKDIR}"
-          sudo chown -R $USER:$USER "${WORKDIR}"
 
       - name: Checkout
         uses: actions/checkout@v4