diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 3f20752d4b6a5..40e021d19c88a 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -56,6 +56,11 @@ on:
         description: 'Commit the benchmark results to the current branch'
         required: true
         default: false
+      expected-cpu:
+        type: string
+        description: 'Expected CPU model (e.g. "AMD EPYC 7763"). If set, the job fails early when the runner CPU does not match.'
+        required: false
+        default: ''
 
 jobs:
   matrix-gen:
@@ -73,7 +78,10 @@ jobs:
   # Any TPC-DS related updates on this job need to be applied to tpcds-1g job of build_and_test.yml as well
   tpcds-1g-gen:
     name: "Generate an TPC-DS dataset with SF=1"
-    if: contains(inputs.class, 'TPCDSQueryBenchmark') || contains(inputs.class, 'LZ4TPCDSDataBenchmark') || contains(inputs.class, 'ZStandardTPCDSDataBenchmark') || contains(inputs.class, '*')
+    # Only generate TPC-DS data when running TPC-DS benchmarks or all benchmarks (class == '*').
+    # Use exact equality instead of contains(inputs.class, '*') to avoid matching wildcard
+    # patterns like '*VectorizedDeltaReaderBenchmark' that don't need TPC-DS data.
+    if: contains(inputs.class, 'TPCDSQueryBenchmark') || contains(inputs.class, 'LZ4TPCDSDataBenchmark') || contains(inputs.class, 'ZStandardTPCDSDataBenchmark') || inputs.class == '*'
     runs-on: ubuntu-latest
     env:
       SPARK_LOCAL_IP: localhost
@@ -156,6 +164,21 @@ jobs:
       # In order to get diff files
       with:
         fetch-depth: 0
+    - name: Check CPU model
+      env:
+        EXPECTED_CPU: ${{ inputs.expected-cpu }}
+      run: |
+        CPU_MODEL=$(grep "model name" /proc/cpuinfo | head -1 | sed 's/model name\s*:\s*//')
+        echo "Runner CPU: $CPU_MODEL"
+        echo "::notice::Runner CPU: $CPU_MODEL"
+        if [ -n "$EXPECTED_CPU" ]; then
+          if echo "$CPU_MODEL" | grep -qF "$EXPECTED_CPU"; then
+            echo "CPU matches expected: $EXPECTED_CPU"
+          else
+            echo "::error::CPU mismatch! Expected '$EXPECTED_CPU' but got '$CPU_MODEL'"
+            exit 1
+          fi
+        fi
     - name: Cache SBT and Maven
       uses: actions/cache@v5
       with:
@@ -179,7 +202,7 @@ jobs:
         distribution: zulu
         java-version: ${{ inputs.jdk }}
     - name: Cache TPC-DS generated data
-      if: contains(inputs.class, 'TPCDSQueryBenchmark') || contains(inputs.class, 'LZ4TPCDSDataBenchmark') || contains(inputs.class, 'ZStandardTPCDSDataBenchmark') || contains(inputs.class, '*')
+      if: contains(inputs.class, 'TPCDSQueryBenchmark') || contains(inputs.class, 'LZ4TPCDSDataBenchmark') || contains(inputs.class, 'ZStandardTPCDSDataBenchmark') || inputs.class == '*'
       id: cache-tpcds-sf-1
       uses: actions/cache@v5
       with: