diff --git a/.github/workflows/reusable_multi_numa.yml b/.github/workflows/reusable_multi_numa.yml
index be66a8ab8e..77f737498e 100644
--- a/.github/workflows/reusable_multi_numa.yml
+++ b/.github/workflows/reusable_multi_numa.yml
@@ -14,16 +14,16 @@ env:
 
 jobs:
   multi_numa:
-    # run only on upstream; forks will not have the HW
+    # run only on upstream; forks will not have the HW....
     if: github.repository == 'oneapi-src/unified-memory-framework'
     strategy:
       matrix:
         # TODO: bring back SLES-15 when the machine is ready
-        os: [ubuntu-22.04, rhel-9.1]
+        os: [sles-15-test]
         build_type: [Debug, Release]
         shared_library: ['ON', 'OFF']
     name: Multi NUMA (${{matrix.os}}, build_type=${{matrix.build_type}}, shared=${{matrix.shared_library}})
-    runs-on:  ["DSS-MULTI-NUMA", "DSS-${{matrix.os}}"]
+    runs-on:  ["DSS-SLES-15-TEST"]
 
     steps:
       - name: Checkout
@@ -50,7 +50,7 @@ jobs:
         run: cmake --build ${{github.workspace}}/build -j $(nproc)
 
       - name: Run tests
-        if: (matrix.os != 'rhel-9.1') && (matrix.os != 'sles-15')
+        if: (matrix.os != 'rhel-9.1') && (matrix.os != 'sles-15-test')
         working-directory: ${{github.workspace}}/build
         run: ctest --output-on-failure --test-dir test
 
@@ -58,7 +58,7 @@ jobs:
         # Skip some tests until we upgrade hwloc and update CMake to properly handle local hwloc installation.
         # TODO: fix issue #560
       - name: Run tests (on RHEL/SLES)
-        if: (matrix.os == 'rhel-9.1') || (matrix.os == 'sles-15')
+        if: (matrix.os == 'rhel-9.1') || (matrix.os == 'sles-15-test')
         working-directory: ${{github.workspace}}/build
         run: |
           ctest --output-on-failure --test-dir test -E "test_provider_os_memory_multiple_numa_nodes"
@@ -66,7 +66,7 @@ jobs:
             --gtest_filter="-*checkModeLocal/*:*checkModePreferredEmptyNodeset/*:testNuma.checkModeInterleave"
 
       - name: Run NUMA tests under valgrind
-        if: (matrix.os != 'rhel-9.1') && (matrix.os != 'sles-15')
+        if: (matrix.os != 'rhel-9.1') && (matrix.os != 'sles-15-test')
         run: |
           ${{github.workspace}}/test/test_valgrind.sh ${{github.workspace}} ${{env.BUILD_DIR}} memcheck "${{env.NUMA_TESTS}}"
           ${{github.workspace}}/test/test_valgrind.sh ${{github.workspace}} ${{env.BUILD_DIR}} drd "${{env.NUMA_TESTS}}"