diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index db379c9d47..13afed5a43 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -28,7 +28,7 @@ concurrency:
 jobs:
   cpp-build:
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-build.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-build.yaml@ubuntu24.04
     with:
       build_type: ${{ inputs.build_type || 'branch' }}
       branch: ${{ inputs.branch }}
@@ -37,7 +37,7 @@ jobs:
   python-build:
     needs: [cpp-build]
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-python-build.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/conda-python-build.yaml@ubuntu24.04
     with:
       build_type: ${{ inputs.build_type || 'branch' }}
       branch: ${{ inputs.branch }}
@@ -46,7 +46,7 @@ jobs:
   upload-conda:
     needs: [cpp-build, python-build]
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-upload-packages.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/conda-upload-packages.yaml@ubuntu24.04
     with:
       build_type: ${{ inputs.build_type || 'branch' }}
       branch: ${{ inputs.branch }}
@@ -57,7 +57,7 @@ jobs:
     if: github.ref_type == 'branch'
     needs: python-build
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@ubuntu24.04
     with:
       arch: "amd64"
       branch: ${{ inputs.branch }}
@@ -69,7 +69,7 @@ jobs:
       sha: ${{ inputs.sha }}
   wheel-build-pylibraft:
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@ubuntu24.04
     with:
       build_type: ${{ inputs.build_type || 'branch' }}
       branch: ${{ inputs.branch }}
@@ -79,7 +79,7 @@ jobs:
   wheel-publish-pylibraft:
     needs: wheel-build-pylibraft
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-publish.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-publish.yaml@ubuntu24.04
     with:
       build_type: ${{ inputs.build_type || 'branch' }}
       branch: ${{ inputs.branch }}
@@ -88,7 +88,7 @@ jobs:
       package-name: pylibraft
   wheel-build-raft-dask:
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@ubuntu24.04
     with:
       build_type: ${{ inputs.build_type || 'branch' }}
       branch: ${{ inputs.branch }}
@@ -98,7 +98,7 @@ jobs:
   wheel-publish-raft-dask:
     needs: wheel-build-raft-dask
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-publish.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-publish.yaml@ubuntu24.04
     with:
       build_type: ${{ inputs.build_type || 'branch' }}
       branch: ${{ inputs.branch }}
diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
index fe8e730921..29e7763183 100644
--- a/.github/workflows/pr.yaml
+++ b/.github/workflows/pr.yaml
@@ -26,13 +26,13 @@ jobs:
       - wheel-tests-raft-dask
       - devcontainer
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/pr-builder.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/pr-builder.yaml@ubuntu24.04
     if: always()
     with:
       needs: ${{ toJSON(needs) }}
   changed-files:
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/changed-files.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/changed-files.yaml@ubuntu24.04
     with:
       files_yaml: |
         test_cpp:
@@ -65,27 +65,27 @@ jobs:
           - '!thirdparty/LICENSES/**'
   checks:
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/checks.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/checks.yaml@ubuntu24.04
     with:
       enable_check_generated_files: false
   conda-cpp-build:
     needs: checks
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-build.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-build.yaml@ubuntu24.04
     with:
       build_type: pull-request
       node_type: cpu16
   conda-cpp-tests:
     needs: [conda-cpp-build, changed-files]
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-tests.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-tests.yaml@ubuntu24.04
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_cpp
     with:
       build_type: pull-request
   conda-cpp-checks:
     needs: conda-cpp-build
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-post-build-checks.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-post-build-checks.yaml@ubuntu24.04
     with:
       build_type: pull-request
       enable_check_symbols: true
@@ -93,20 +93,20 @@ jobs:
   conda-python-build:
     needs: conda-cpp-build
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-python-build.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/conda-python-build.yaml@ubuntu24.04
     with:
       build_type: pull-request
   conda-python-tests:
     needs: [conda-python-build, changed-files]
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@ubuntu24.04
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
     with:
       build_type: pull-request
   docs-build:
     needs: conda-python-build
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@ubuntu24.04
     with:
       build_type: pull-request
       node_type: "gpu-v100-latest-1"
@@ -116,14 +116,14 @@ jobs:
   wheel-build-pylibraft:
     needs: checks
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@ubuntu24.04
     with:
       build_type: pull-request
       script: ci/build_wheel_pylibraft.sh
   wheel-tests-pylibraft:
     needs: [wheel-build-pylibraft, changed-files]
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@ubuntu24.04
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
     with:
       build_type: pull-request
@@ -131,21 +131,21 @@ jobs:
   wheel-build-raft-dask:
     needs: wheel-tests-pylibraft
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@ubuntu24.04
     with:
       build_type: pull-request
       script: "ci/build_wheel_raft_dask.sh"
   wheel-tests-raft-dask:
     needs: [wheel-build-raft-dask, changed-files]
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@ubuntu24.04
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
     with:
       build_type: pull-request
       script: ci/test_wheel_raft_dask.sh
   devcontainer:
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/build-in-devcontainer.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/build-in-devcontainer.yaml@ubuntu24.04
     with:
       arch: '["amd64"]'
       cuda: '["12.5"]'
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 2bee8a3d1d..74011a0cad 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -16,7 +16,7 @@ on:
 jobs:
   conda-cpp-checks:
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-post-build-checks.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-post-build-checks.yaml@ubuntu24.04
     with:
       build_type: nightly
       branch: ${{ inputs.branch }}
@@ -26,7 +26,7 @@ jobs:
       symbol_exclusions: raft_cutlass
   conda-cpp-tests:
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-tests.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-tests.yaml@ubuntu24.04
     with:
       build_type: nightly
       branch: ${{ inputs.branch }}
@@ -34,7 +34,7 @@ jobs:
       sha: ${{ inputs.sha }}
   conda-python-tests:
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@ubuntu24.04
     with:
       build_type: nightly
       branch: ${{ inputs.branch }}
@@ -42,7 +42,7 @@ jobs:
       sha: ${{ inputs.sha }}
   wheel-tests-pylibraft:
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@ubuntu24.04
     with:
       build_type: nightly
       branch: ${{ inputs.branch }}
@@ -51,7 +51,7 @@ jobs:
       script: ci/test_wheel_pylibraft.sh
   wheel-tests-raft-dask:
     secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@branch-24.12
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@ubuntu24.04
     with:
       build_type: nightly
       branch: ${{ inputs.branch }}
diff --git a/build.sh b/build.sh
index a77dd188f4..bd60914517 100755
--- a/build.sh
+++ b/build.sh
@@ -463,14 +463,14 @@ if (( ${NUMARGS} == 0 )) || hasArg libraft || hasArg docs || hasArg tests || has
           if [[ ${CACHE_TOOL} == "sccache" && -x "$(command -v sccache)" ]]; then
               COMPILE_REQUESTS=$(sccache -s | grep "Compile requests \+ [0-9]\+$" | awk '{ print $NF }')
               CACHE_HITS=$(sccache -s | grep "Cache hits \+ [0-9]\+$" | awk '{ print $NF }')
-              HIT_RATE=$(echo - | awk "{printf \"%.2f\n\", $CACHE_HITS / $COMPILE_REQUESTS * 100}")
+              HIT_RATE=$(python3 -c "print(f'{${CACHE_HITS} / ${COMPILE_REQUESTS}:.2f}' if ${COMPILE_REQUESTS} else 'nan')")
               MSG="${MSG}<br/>cache hit rate ${HIT_RATE} %"
           elif [[ ${CACHE_TOOL} == "ccache" && -x "$(command -v ccache)" ]]; then
               CACHE_STATS_LINE=$(ccache -s | grep "Hits: \+ [0-9]\+ / [0-9]\+" | tail -n1)
               if [[ ! -z "$CACHE_STATS_LINE" ]]; then
                   CACHE_HITS=$(echo "$CACHE_STATS_LINE" - | awk '{ print $2 }')
                   COMPILE_REQUESTS=$(echo "$CACHE_STATS_LINE" - | awk '{ print $4 }')
-                  HIT_RATE=$(echo - | awk "{printf \"%.2f\n\", $CACHE_HITS / $COMPILE_REQUESTS * 100}")
+                  HIT_RATE=$(python3 -c "print(f'{${CACHE_HITS} / ${COMPILE_REQUESTS}:.2f}' if ${COMPILE_REQUESTS} else 'nan')")
                   MSG="${MSG}<br/>cache hit rate ${HIT_RATE} %"
               fi
           fi