diff --git a/.github/workflows/ci-gh-cpu-build-and-test.yml b/.github/workflows/ci-gh-cpu-build-and-test.yml
index 7ee174639..1c224e120 100644
--- a/.github/workflows/ci-gh-cpu-build-and-test.yml
+++ b/.github/workflows/ci-gh-cpu-build-and-test.yml
@@ -12,6 +12,10 @@ on:
 
 jobs:
   build-cpu:
+    strategy:
+      fail-fast: false
+      matrix:
+        ucx-config: [ucx, no-ucx]
     if: ${{ github.repository_owner == 'nv-legate' }}
     uses:
       ./.github/workflows/gh-build.yml
@@ -21,6 +25,7 @@ jobs:
       runs-on: ${{ contains(github.repository, 'nv-legate/legate.core') && 'linux-amd64-cpu4' || 'ubuntu-latest' }}
       sha: ${{ github.sha }}
       build-type: ci
+      ucx-config: ${{ matrix.ucx-config }}
 
   test-cpu:
     needs:
@@ -28,10 +33,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        include:
-          - { name: Pytest Unit Tests, test-scope: unit }
-          - { name: mypy, test-scope: mypy }
-    name: ${{ matrix.name }}
+        ucx-config: [ucx, no-ucx]
+        test-config: [{ name: Pytest Unit Tests, test-scope: unit }, { name: mypy, test-scope: mypy }]
+    name: ${{ matrix.test-config.name }}
     if: ${{ github.repository_owner == 'nv-legate' }}
     uses:
       ./.github/workflows/gh-test.yml
@@ -40,6 +44,7 @@ jobs:
       repos-name: ${{ github.event.repository.name }}
       runs-on: ${{ contains(github.repository, 'nv-legate/legate.core') && 'linux-amd64-32cpu' || 'ubuntu-latest' }}
       sha: ${{ github.sha }}
+      ucx-config: ${{ matrix.ucx-config }}
       test-scope: ${{ matrix.test-scope }}
 
   cleanup:
diff --git a/.github/workflows/ci-gh-gpu-build-and-test.yml b/.github/workflows/ci-gh-gpu-build-and-test.yml
index b0c32f1de..01b85ffc7 100644
--- a/.github/workflows/ci-gh-gpu-build-and-test.yml
+++ b/.github/workflows/ci-gh-gpu-build-and-test.yml
@@ -12,6 +12,10 @@ on:
 
 jobs:
   build-gpu:
+    strategy:
+      fail-fast: false
+      matrix:
+        ucx-config: [ucx, no-ucx]
     if: ${{ github.repository_owner == 'nv-legate' }}
     uses:
       ./.github/workflows/gh-build.yml
@@ -21,6 +25,7 @@ jobs:
       runs-on: ${{ contains(github.repository, 'nv-legate/legate.core') && 'linux-amd64-32cpu' || 'ubuntu-latest' }}
       sha: ${{ github.sha }}
       build-type: ci
+      ucx-config: ${{ matrix.ucx-config }}
 
   test-gpu:
     needs:
@@ -28,10 +33,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        include:
-          - { name: Pytest Unit Tests, test-scope: unit, runner: linux-amd64-gpu-v100-latest-1 }
-          - { name: Pytest Unit Tests, test-scope: unit, runner: linux-amd64-2gpu }
-          - { name: mypy, test-scope: mypy, runner: 'linux-amd64-gpu-v100-latest-1' }
+        ucx-config: [ucx, no-ucx]
+        test-config: [{ name: Pytest Unit Tests, test-scope: unit, runner: linux-amd64-gpu-v100-latest-1 }, 
+                      { name: Pytest Unit Tests, test-scope: unit, runner: linux-amd64-2gpu },
+                      { name: mypy, test-scope: mypy, runner: 'linux-amd64-gpu-v100-latest-1' }]
+    name: ${{ matrix.test-config.name }}
     name: ${{ matrix.name }}
     if: ${{ github.repository_owner == 'nv-legate' }}
     uses:
@@ -39,8 +45,9 @@ jobs:
     with:
       build-target: gpu
       repos-name: ${{ github.event.repository.name }}
-      runs-on: ${{ matrix.runner }}
+      runs-on: ${{ matrix.test-config.runner }}
       sha: ${{ github.sha }}
+      ucx-config: ${{ matrix.ucx-config }}
       test-scope: ${{ matrix.test-scope }}
 
   cleanup:
diff --git a/.github/workflows/gh-build.yml b/.github/workflows/gh-build.yml
index d4a0e216f..84df0ce79 100644
--- a/.github/workflows/gh-build.yml
+++ b/.github/workflows/gh-build.yml
@@ -21,17 +21,21 @@ on:
         required: true
         type: string
         description: One of ci / release
+      ucx-config:
+        required: true
+        type: string
 
 env:
   GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
   BASE_IMAGE: rapidsai/devcontainers:23.06-cpp-mambaforge-ubuntu22.04
-  IMAGE_NAME: ${{ inputs.repos-name }}-${{ inputs.build-target }}
+  IMAGE_NAME: ${{ inputs.repos-name }}-${{ inputs.build-target }}-${{ inputs.ucx-config }}
   USE_CUDA: ${{ (inputs.build-target == 'cpu' && 'OFF') || 'ON' }}
+  UCX_ENABLED: ${{ (inputs.ucx-config == 'ucx' && 'ON') || 'OFF' }}
   PUSH_IMAGE: ${{ inputs.build-type == 'ci' && 'true' || 'false'}}
 
 jobs:
   build:
-    name: build-${{ inputs.build-target }}-sub-workflow
+    name: build-${{ inputs.build-target }}-${{ inputs.ucx-config }}-sub-workflow
 
     permissions:
       id-token: write # This is required for configure-aws-credentials
@@ -106,5 +110,5 @@ jobs:
       - name: Upload build artifacts
         uses: actions/upload-artifact@v3
         with:
-          name: "${{ inputs.repos-name }}-${{ inputs.build-target }}-${{ inputs.sha }}"
+          name: "${{ inputs.repos-name }}-${{ inputs.build-target }}-${{ inputs.ucx-config }}-${{ inputs.sha }}"
           path: artifacts
diff --git a/.github/workflows/gh-test.yml b/.github/workflows/gh-test.yml
index 5d9c49872..8452fd71c 100644
--- a/.github/workflows/gh-test.yml
+++ b/.github/workflows/gh-test.yml
@@ -15,6 +15,9 @@ on:
       sha:
         required: true
         type: string
+      ucx-config:
+        required: true
+        type: string
       test-scope:
         required: true
         type: string
@@ -23,10 +26,11 @@ jobs:
   test:
     if: github.repository_owner == 'nv-legate'
     name: test-${{ inputs.build-target }}-sub-workflow
+    name: test-${{ inputs.build-target }}-${{ inputs.ucx-config }}-sub-workflow
     runs-on: ${{ inputs.runs-on }}
     container:
       options: -u root
-      image: ghcr.io/nv-legate/${{ inputs.repos-name }}-${{ inputs.build-target }}:${{ inputs.sha }}
+      image: ghcr.io/nv-legate/${{ inputs.repos-name }}-${{ inputs.build-target }}-${{ inputs.ucx-config }}:${{ inputs.sha }}
       env:
         PYTHONDONTWRITEBYTECODE: 1
         NVIDIA_VISIBLE_DEVICES: ${{ env.NVIDIA_VISIBLE_DEVICES }}
diff --git a/continuous_integration/build-docker-image b/continuous_integration/build-docker-image
index e71c05f0b..3b7105026 100755
--- a/continuous_integration/build-docker-image
+++ b/continuous_integration/build-docker-image
@@ -34,6 +34,13 @@ done
 
 set -e
 
+if [ "$UCX_ENABLED" = "ON" ]; then
+     sed -i 's@DLegion_NETWORKS=@DLegion_NETWORKS=ucx@g' $SOURCE_DIR/continuous_integration/home/coder/.local/bin/build-legate-cpp
+     sed -i '\/conda-build\/conda_build_config\.yaml/a ucx:\n\  - ">=1.14"' $SOURCE_DIR/continuous_integration/home/coder/.local/bin/build-legate-conda
+     sed -i 's/\-\-no\-ucx/\-\-ucx   /g' $SOURCE_DIR/continuous_integration/home/coder/.local/bin/conda-utils
+     sed -i  '/-c conda-forge pytest/s/$/ ucx openmpi/g' $SOURCE_DIR/continuous_integration/home/coder/.local/bin/run-test-or-analysis
+fi
+
 # Avoid build errors due to a missing .creds folder
 mkdir -p "$SOURCE_DIR/.creds"
 
diff --git a/tests/unit/legate/driver/test_command.py b/tests/unit/legate/driver/test_command.py
index 57aedc4fe..6e74005ad 100644
--- a/tests/unit/legate/driver/test_command.py
+++ b/tests/unit/legate/driver/test_command.py
@@ -1097,7 +1097,10 @@ def test_default_multi_rank(
 
         result = m.cmd_bgwork(config, system, launcher)
 
-        assert result == ("-ll:bgwork", "2")
+        if "ucx" in install_info.networks:
+            assert result == ("-ll:bgwork", "2", "-ll:bgworkpin", "1")
+        else:
+            assert result == ("-ll:bgwork", "2")
 
     @pytest.mark.parametrize("rank_var", RANK_ENV_VARS)
     @pytest.mark.parametrize("rank", ("0", "1", "2"))
@@ -1126,7 +1129,10 @@ def test_utility_1_multi_rank_no_launcher(
 
         result = m.cmd_bgwork(config, system, launcher)
 
-        assert result == ("-ll:bgwork", "2")
+        if "ucx" in install_info.networks:
+            assert result == ("-ll:bgwork", "2", "-ll:bgworkpin", "1")
+        else:
+            assert result == ("-ll:bgwork", "2")
 
     @pytest.mark.parametrize("rank_var", RANK_ENV_VARS)
     @pytest.mark.parametrize("rank", ("0", "1", "2"))
@@ -1154,7 +1160,10 @@ def test_utility_1_multi_rank_with_launcher(
 
         result = m.cmd_bgwork(config, system, launcher)
 
-        assert result == ("-ll:bgwork", "2")
+        if "ucx" in install_info.networks:
+            assert result == ("-ll:bgwork", "2", "-ll:bgworkpin", "1")
+        else:
+            assert result == ("-ll:bgwork", "2")
 
     @pytest.mark.parametrize("launch", ("mpirun", "jsrun", "srun"))
     def test_utility_1_multi_rank_with_launcher_and_ucx(
@@ -1183,7 +1192,10 @@ def test_utility_n_multi_rank_no_launcher(
 
         result = m.cmd_bgwork(config, system, launcher)
 
-        assert result == ("-ll:bgwork", value)
+        if "ucx" in install_info.networks:
+            assert result == ("-ll:bgwork", value, "-ll:bgworkpin", "1")
+        else:
+            assert result == ("-ll:bgwork", value)
 
     @pytest.mark.parametrize("rank_var", RANK_ENV_VARS)
     @pytest.mark.parametrize("rank", ("0", "1", "2"))
@@ -1200,7 +1212,10 @@ def test_utility_n_multi_rank_no_launcher_and_ucx(
         result = m.cmd_bgwork(config, system, launcher)
         install_info.networks[:] = networks_orig[:]
 
-        assert result == ("-ll:bgwork", value, "-ll:bgworkpin", "1")
+        if "ucx" in install_info.networks:
+            assert result == ("-ll:bgwork", value, "-ll:bgworkpin", "1")
+        else:
+            assert result == ("-ll:bgwork", value)
 
     @pytest.mark.parametrize("launch", ("mpirun", "jsrun", "srun"))
     @pytest.mark.parametrize("value", ("2", "3", "10"))
@@ -1213,7 +1228,10 @@ def test_utility_n_multi_rank_with_launcher(
 
         result = m.cmd_bgwork(config, system, launcher)
 
-        assert result == ("-ll:bgwork", value)
+        if "ucx" in install_info.networks:
+            assert result == ("-ll:bgwork", value, "-ll:bgworkpin", "1")
+        else:
+            assert result == ("-ll:bgwork", value)
 
     @pytest.mark.parametrize("launch", ("mpirun", "jsrun", "srun"))
     @pytest.mark.parametrize("value", ("2", "3", "10"))