fix gemm segfault

print exit signals on validation failure

validation/validate.py

@@ -1,6 +1,8 @@
 #!/usr/bin/env python3
 
 import argparse
+import shlex
+import signal
 import subprocess
 import sys
 from pathlib import Path
@@ -8,6 +10,37 @@ from colorama import Style, Fore
 from validate_one import ProgressReporter, clean_workspace_artifacts, validate_network
 
 
+def format_command(cmd):
+    if isinstance(cmd, (list, tuple)):
+        return shlex.join(str(arg) for arg in cmd)
+    return str(cmd)
+
+
+def format_return_status(returncode):
+    if returncode < 0:
+        signal_num = -returncode
+        try:
+            signal_name = signal.Signals(signal_num).name
+        except ValueError:
+            signal_name = "UNKNOWN"
+        return f"Program terminated by signal {signal_name} ({signal_num})."
+    return f"Program exited with code {returncode}."
+
+
+def print_validation_error(reporter, rel, exc):
+    reporter.suspend()
+    print(Style.BRIGHT + Fore.RED + f"Exception while validating {rel}" + Style.RESET_ALL,
+          file=sys.stderr, flush=True)
+    if isinstance(exc, subprocess.CalledProcessError):
+        print(format_return_status(exc.returncode), file=sys.stderr, flush=True)
+        print("Retry command:", file=sys.stderr, flush=True)
+        print(format_command(exc.cmd), file=sys.stderr, flush=True)
+    else:
+        print(f"{type(exc).__name__}: {exc}", file=sys.stderr, flush=True)
+    print("=" * 72, file=sys.stderr, flush=True)
+    reporter.resume()
+
+
 def main():
     ap = argparse.ArgumentParser(description="Validate all ONNX operations under the operations/ directory.")
     ap.add_argument("--raptor-path", help="Path to the Raptor compiler binary.")
@@ -70,8 +103,12 @@ def main():
                 model_total=len(onnx_files),
             )
             results[str(rel)] = passed
-        except (subprocess.CalledProcessError, Exception):
+        except subprocess.CalledProcessError as exc:
             results[str(rel)] = False
+            print_validation_error(reporter, rel, exc)
+        except Exception as exc:
+            results[str(rel)] = False
+            print_validation_error(reporter, rel, exc)
 
     reporter.finish()