debug: find ixformer symbol locations on real hardware

ex_engine/find_ixformer_symbols.py

@@ -0,0 +1,55 @@
+#!/usr/bin/env python3
+"""Find which .so files export ixformer::infer symbols."""
+import subprocess, glob, os
+
+targets = ["silu_and_mul", "rms_norm", "ixformer_linear", "topk_softmax",
+           "xllm_paged_attention", "xllm_reshape_and_cache",
+           "moe_w16a16_group_gemm", "residual_rms_norm"]
+
+search_dirs = [
+    "/usr/local/corex/lib64",
+    "/usr/local/corex/lib",
+    "/usr/local/corex-3.2.3/lib64",
+    "/usr/local/corex-3.2.3/lib",
+    "/usr/local/lib",
+]
+
+so_files = []
+for d in search_dirs:
+    so_files.extend(glob.glob(os.path.join(d, "**/*.so*"), recursive=True))
+
+print(f"Scanning {len(so_files)} .so files...")
+
+for target in targets:
+    found = False
+    for so in so_files:
+        try:
+            out = subprocess.run(["nm", "-D", so], capture_output=True, text=True, timeout=5)
+            if target in out.stdout:
+                # Get the full symbol name
+                for line in out.stdout.split('\n'):
+                    if target in line and ' T ' in line:
+                        sym = line.split()[-1]
+                        print(f"✓ {target}: {os.path.basename(so)}  [{sym[:80]}]")
+                        found = True
+                        break
+                if found:
+                    break
+        except:
+            pass
+    if not found:
+        # Try with grep on all lines (U = undefined, T = defined)
+        for so in so_files:
+            try:
+                out = subprocess.run(["nm", "-D", so], capture_output=True, text=True, timeout=5)
+                for line in out.stdout.split('\n'):
+                    if target in line:
+                        print(f"? {target}: {os.path.basename(so)}  [{line.strip()[:100]}]")
+                        found = True
+                        break
+                if found:
+                    break
+            except:
+                pass
+    if not found:
+        print(f"✗ {target}: NOT FOUND in any .so")