diff --git a/probe_all_symbols.sh b/probe_all_symbols.sh
new file mode 100644
index 00000000..521b51bf
--- /dev/null
+++ b/probe_all_symbols.sh
@@ -0,0 +1,66 @@
+#!/bin/bash
+# probe_all_symbols.sh — Check which ixformer::infer symbols actually exist
+echo "=== Checking all symbols we need ==="
+
+LIBS=(
+    "/usr/local/corex/lib64/python3/dist-packages/ixformer/libixformer.so"
+    "/usr/local/corex/lib64/python3/dist-packages/ixformer/_ixformer_torch.cpython-310-x86_64-linux-gnu.so"
+    "/usr/local/corex/lib64/python3/dist-packages/ixformer/_C.cpython-310-x86_64-linux-gnu.so"
+    "/usr/local/corex/lib64/libixattn.so"
+)
+
+FUNCS=(
+    "silu_and_mul"
+    "topk_softmax"
+    "moe_compute_token_index"
+    "moe_expand_input"
+    "moe_w16a16_group_gemm"
+    "moe_output_reduce_sum"
+    "xllm_paged_attention"
+    "ixinfer_flash_attn_unpad"
+    "rms_norm"
+    "residual_rms_norm"
+    "xllm_rotary_embedding"
+    "xllm_reshape_and_cache"
+    "ixformer_linear"
+)
+
+for func in "${FUNCS[@]}"; do
+    echo ""
+    echo "--- $func ---"
+    found=0
+    for lib in "${LIBS[@]}"; do
+        if [ -f "$lib" ]; then
+            matches=$(nm -D "$lib" 2>/dev/null | grep -i "$func" | grep " T \| W " | head -3)
+            if [ -n "$matches" ]; then
+                echo "  $(basename $lib):"
+                echo "$matches" | while read line; do echo "    $line"; done
+                found=1
+            fi
+        fi
+    done
+    if [ "$found" -eq 0 ]; then
+        echo "  NOT FOUND in any .so (may need dlopen or different namespace)"
+        # Also search undefined symbols to see if it's referenced somewhere
+        for lib in "${LIBS[@]}"; do
+            if [ -f "$lib" ]; then
+                undef=$(nm -D "$lib" 2>/dev/null | grep -i "$func" | grep " U " | head -2)
+                if [ -n "$undef" ]; then
+                    echo "  (undefined ref in $(basename $lib)):"
+                    echo "$undef" | while read line; do echo "    $line"; done
+                fi
+            fi
+        done
+    fi
+done
+
+echo ""
+echo "=== Full ixformer::infer namespace in all libs ==="
+for lib in "${LIBS[@]}"; do
+    if [ -f "$lib" ]; then
+        count=$(nm -D "$lib" 2>/dev/null | grep "ixformer.*infer" | grep " T \| W " | wc -l)
+        echo ""
+        echo "$(basename $lib): $count ixformer::infer symbols"
+        nm -D "$lib" 2>/dev/null | grep "ixformer.*infer" | grep " T \| W " | c++filt | head -20
+    fi
+done