added very simple onnx model analyzer

just estimating memory needed to load the model for now

4 files changed, 69 insertions, 0 deletions

diff --git a/eval/CMakeLists.txt b/eval/CMakeLists.txt
index 302b6768cea..16c9c72d8a5 100644
--- a/eval/CMakeLists.txt
+++ b/eval/CMakeLists.txt
@@ -5,6 +5,7 @@ vespa_define_module(
     staging_vespalib
 
     APPS
+    src/apps/analyze_onnx_model
     src/apps/eval_expr
     src/apps/make_tensor_binary_format_test_spec
     src/apps/tensor_conformance
diff --git a/eval/src/apps/analyze_onnx_model/.gitignore b/eval/src/apps/analyze_onnx_model/.gitignore
new file mode 100644
index 00000000000..12ce20b03ba
--- /dev/null
+++ b/eval/src/apps/analyze_onnx_model/.gitignore
@@ -0,0 +1 @@
+/vespa-analyze-onnx-model
diff --git a/eval/src/apps/analyze_onnx_model/CMakeLists.txt b/eval/src/apps/analyze_onnx_model/CMakeLists.txt
new file mode 100644
index 00000000000..47cbb6504f4
--- /dev/null
+++ b/eval/src/apps/analyze_onnx_model/CMakeLists.txt
@@ -0,0 +1,8 @@
+# Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+vespa_add_executable(vespa-analyze-onnx-model
+    SOURCES
+    analyze_onnx_model.cpp
+    INSTALL bin
+    DEPENDS
+    vespaeval
+)
diff --git a/eval/src/apps/analyze_onnx_model/analyze_onnx_model.cpp b/eval/src/apps/analyze_onnx_model/analyze_onnx_model.cpp
new file mode 100644
index 00000000000..f1cc3b28751
--- /dev/null
+++ b/eval/src/apps/analyze_onnx_model/analyze_onnx_model.cpp
@@ -0,0 +1,59 @@
+// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+
+#include <vespa/eval/onnx/onnx_wrapper.h>
+#include <vespa/vespalib/util/guard.h>
+
+using vespalib::FilePointer;
+using namespace vespalib::eval;
+
+bool read_line(FilePointer &file, vespalib::string &line) {
+    char line_buffer[1024];
+    char *res = fgets(line_buffer, sizeof(line_buffer), file.fp());
+    if (res == nullptr) {
+        line.clear();
+        return false;
+    }
+    line = line_buffer;
+    while (!line.empty() && isspace(line[line.size() - 1])) {
+        line.pop_back();
+    }
+    return true;
+}
+
+void extract(const vespalib::string &str, const vespalib::string &prefix, vespalib::string &dst) {
+    if (starts_with(str, prefix)) {
+        size_t pos = prefix.size();
+        while ((str.size() > pos) && isspace(str[pos])) {
+            ++pos;
+        }
+        dst = str.substr(pos);
+    }
+}
+
+void report_memory_usage(const vespalib::string &desc) {
+    vespalib::string vm_size = "unknown";
+    vespalib::string vm_rss = "unknown";
+    vespalib::string line;
+    FilePointer file(fopen("/proc/self/status", "r"));
+    while (read_line(file, line)) {
+        extract(line, "VmSize:", vm_size);
+        extract(line, "VmRSS:", vm_rss);
+    }
+    fprintf(stderr, "vm_size: %s, vm_rss: %s (%s)\n", vm_size.c_str(), vm_rss.c_str(), desc.c_str());
+}
+
+int usage(const char *self) {
+    fprintf(stderr, "usage: %s <onnx-model>\n", self);
+    fprintf(stderr, "  load onnx model and report memory usage\n");
+    return 1;
+}
+
+int main(int argc, char **argv) {
+    if (argc != 2) {
+        return usage(argv[0]);
+    }
+    report_memory_usage("before loading model");
+    Onnx onnx(argv[1], Onnx::Optimize::ENABLE);
+    report_memory_usage("after loading model");
+    return 0;
+}