diff --git a/.github/workflows/multinode-inputs.py b/.github/workflows/multinode-inputs.py
index 0f6d55cd7..03a50ae5d 100644
--- a/.github/workflows/multinode-inputs.py
+++ b/.github/workflows/multinode-inputs.py
@@ -2,6 +2,7 @@
 # The test scenario is randomly selected.
 # The inputs are printed to stdout in GitHub step output key=value format.
 
+import argparse
 from dataclasses import dataclass
 import random
 import typing as t
@@ -43,6 +44,16 @@ class Scenario:
 
 
 def main() -> None:
+
+    parser = argparse.ArgumentParser(
+        description='Randomly picks a multinode scenario to execute')
+    parser.add_argument(
+        '--output-summary', '-s',
+        type=argparse.FileType('w', encoding='UTF-8'),
+        default=None,
+        help="Write a markdown summary table of selected inputs to a file (use '-' to write to stdout)")
+    args = parser.parse_args()
+
     scenario = random_scenario()
     inputs = {
         "os_distribution": scenario.os_release.distribution,
@@ -57,6 +68,8 @@ def main() -> None:
     }
     for name, value in inputs.items():
         write_output(name, value)
+    if args.output_summary:
+        write_summary(inputs, args.output_summary)
 
 
 def random_scenario() -> Scenario:
@@ -84,5 +97,13 @@ def write_output(name: str, value: str) -> None:
     print(f"{name}={value}")
 
 
+def write_summary(inputs: dict, output: t.TextIO):
+    print(
+        '| Input  | Value |\n'
+        '| -----: | :---- |', file=output)
+    for key, value in inputs.items():
+        print(f'| **{key}** | `{value}`  |', file=output)
+
+
 if __name__ == "__main__":
     main()
diff --git a/.github/workflows/stackhpc-multinode-periodic.yml b/.github/workflows/stackhpc-multinode-periodic.yml
index d573bfb96..00ce12a6a 100644
--- a/.github/workflows/stackhpc-multinode-periodic.yml
+++ b/.github/workflows/stackhpc-multinode-periodic.yml
@@ -28,7 +28,8 @@ jobs:
       - name: Generate inputs for multinode workflow
         id: generate-inputs
         run: |
-          python3 .github/workflows/multinode-inputs.py >> $GITHUB_OUTPUT
+          python3 .github/workflows/multinode-inputs.py -s "$GITHUB_STEP_SUMMARY" \
+            | tee -a "$GITHUB_OUTPUT"
 
       - name: Display generated inputs
         run: |