diff --git a/.github/workflows/user_project_ci.yml b/.github/workflows/user_project_ci.yml
index d3e9f0c..0cd7a16 100644
--- a/.github/workflows/user_project_ci.yml
+++ b/.github/workflows/user_project_ci.yml
@@ -8,46 +8,9 @@
   workflow_dispatch:
 
 jobs:
-  pdk:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
-
-      - name: Export PDK ROOT
-        run: echo "PDK_ROOT=/home/runner/work/pdk" >> $GITHUB_ENV
-      
-      - name: Export OPENLANE ROOT
-        run: echo "OPENLANE_ROOT=/home/runner/work/caravel_user_project/openlane" >> $GITHUB_ENV
-
-      - name: Install dependencies
-        run: |
-          sudo mkdir -p ${{ env.PDK_ROOT }}
-          sudo chown -R $USER:$USER ${{ env.PDK_ROOT }}
-          make install
-          make openlane
-          make pdk-with-volare
-
-      - name: Tarball PDK
-        run: |
-          tar -cf /tmp/sky130A.tar -C $PDK_ROOT/sky130A .
-
-      - name: Upload PDK Tarball
-        uses: actions/upload-artifact@v2
-        with:
-          name: pdk-tarball
-          path: /tmp/sky130A.tar
-
-
   mpw_precheck:
     timeout-minutes: 720
     runs-on: ubuntu-latest
-    needs: [pdk]
     steps:
       - uses: actions/checkout@v2
 
@@ -62,26 +25,20 @@
           echo "PDK_ROOT=/home/runner/work/pdk" >> $GITHUB_ENV
       
       - name: Export PDKPATH
-        run: echo "PDKPATH=/home/runner/work/pdk/sky130A" >> $GITHUB_ENV
+        run: echo "PDKPATH=/home/runner/work/pdk/sky130B" >> $GITHUB_ENV
 
-      - name: Download PDK Tarball
-        uses: actions/download-artifact@v2
-        with:
-          name: pdk-tarball
-          path: /tmp
-
-      - name: Unpack PDK Tarball
+      - name: Dependancies pdk
         run: |
-          sudo mkdir -p ${{ env.PDK_ROOT }}/sky130A
-          sudo chown -R $USER:$USER ${{ env.PDK_ROOT }}
-          tar -xf /tmp/sky130A.tar -C $PDK_ROOT/sky130A .
+          make install
+          make pdk-with-volare
+
       - name: Run MPW-Precheck
         run: |
           export INPUT_DIRECTORY=$(pwd)
           export PRECHECK_ROOT=$INPUT_DIRECTORY/mpw_precheck
           export OUTPUT_DIRECTORY=$INPUT_DIRECTORY/mpw_precheck_result
           export OUTPUT=$OUTPUT_DIRECTORY/logs/precheck.log
-          export PDKPATH=$PDK_ROOT/sky130A
+          export PDKPATH=$PDK_ROOT/sky130B
 
           git clone --depth=1 -b mpw-5b https://github.com/efabless/mpw_precheck.git
 
@@ -102,7 +59,6 @@
   user_project_flow:
     timeout-minutes: 720
     runs-on: ubuntu-latest
-    needs: [pdk]
     steps:
       - uses: actions/checkout@v2
 
@@ -117,24 +73,17 @@
 
       - name: Export OPENLANE ROOT
         run: echo "OPENLANE_ROOT=/home/runner/work/caravel_user_project/openlane" >> $GITHUB_ENV
-
-      - name: Download PDK Tarball
-        uses: actions/download-artifact@v2
-        with:
-          name: pdk-tarball
-          path: /tmp
-
-      - name: Unpack PDK Tarball
-        run: |
-          sudo mkdir -p ${{ env.PDK_ROOT }}/sky130A
-          sudo chown -R $USER:$USER ${{ env.PDK_ROOT }}
-          tar -xf /tmp/sky130A.tar -C $PDK_ROOT/sky130A .
+      
+      - name: Export PDKPATH
+        run: echo "PDKPATH=/home/runner/work/pdk/sky130B" >> $GITHUB_ENV
 
       - name: Install dependencies
         run: |
+          export CARAVEL_LITE=0
           make install
           make install_mcw
           make openlane
+          make pdk-with-volare
           make simenv
 
       - name: Harden using Openlane
diff --git a/Makefile b/Makefile
index 6f8e5b8..2e99d6d 100644
--- a/Makefile
+++ b/Makefile
@@ -31,6 +31,9 @@
 # Install lite version of caravel, (1): caravel-lite, (0): caravel
 CARAVEL_LITE?=1
 
+# PDK switch varient
+export PDK?=sky130B
+
 MPW_TAG ?= mpw-6c
 
 ifeq ($(CARAVEL_LITE),1)
diff --git a/openlane/user_proj_example/config.tcl b/openlane/user_proj_example/config.tcl
index c9266ee..b216984 100755
--- a/openlane/user_proj_example/config.tcl
+++ b/openlane/user_proj_example/config.tcl
@@ -13,7 +13,7 @@
 # limitations under the License.
 # SPDX-License-Identifier: Apache-2.0
 
-set ::env(PDK) "sky130A"
+set ::env(PDK) $::env(PDK)
 set ::env(STD_CELL_LIBRARY) "sky130_fd_sc_hd"
 
 set script_dir [file dirname [file normalize [info script]]]
diff --git a/openlane/user_project_wrapper/config.tcl b/openlane/user_project_wrapper/config.tcl
index f720e39..f0d44fa 100755
--- a/openlane/user_project_wrapper/config.tcl
+++ b/openlane/user_project_wrapper/config.tcl
@@ -16,7 +16,7 @@
 # Base Configurations. Don't Touch
 # section begin
 
-set ::env(PDK) "sky130A"
+set ::env(PDK) $::env(PDK)
 set ::env(STD_CELL_LIBRARY) "sky130_fd_sc_hd"
 
 # YOU ARE NOT ALLOWED TO CHANGE ANY VARIABLES DEFINED IN THE FIXED WRAPPER CFGS