[rfc] opentelemetry in pytorch (#122999)

1. Add current latest version (opentelemetry-cpp version v1.14.2) to PyTorch library.
Steps:
```
$cd pytorch
$git submodule add https://github.com/open-telemetry/opentelemetry-cpp.git third_party/opentelemetry-cpp
$cd third_party/opentelemetry-cpp
$git checkout v1.14.2
$git add third_party/opentelemetry-cpp .gitmodules
$git commit
```
Expected change in checkout size:
```
(/home/cpio/local/a/pytorch-env) [cpio@devvm17556.vll0 ~/local/pytorch (gh/c-p-i-o/otel)]$ git count-objects -vH
count: 654
size: 3.59 MiB
in-pack: 1229701
packs: 17
size-pack: 1.17 GiB
prune-packable: 76
garbage: 0
size-garbage: 0 bytes
```

2.

TODO
- [x] Figure out how dynamic linking works. App builders will somehow need to `target_include` opentelemetry-cpp at runtime.
- [ ] Examples on how to use opentelemetry + pytorch
- [ ] Tests + documentation (e.g. using null opentelemetry implementation).

Pull Request resolved: https://github.com/pytorch/pytorch/pull/122999
Approved by: https://github.com/ezyang

.bazelignore

@@ -1,3 +1,4 @@
 # We do not use this library in our Bazel build. It contains an
 # infinitely recursing symlink that makes Bazel very unhappy.
 third_party/ittapi/
+third_party/opentelemetry-cpp

.gitmodules

@@ -149,3 +149,6 @@
 [submodule "third_party/mimalloc"]
 	path = third_party/mimalloc
 	url = https://github.com/microsoft/mimalloc.git
+[submodule "third_party/opentelemetry-cpp"]
+	path = third_party/opentelemetry-cpp
+	url = https://github.com/open-telemetry/opentelemetry-cpp.git

WORKSPACE

@@ -71,6 +71,13 @@ http_archive(
     ],
 )
 
+http_archive(
+    name = "com_github_opentelemetry-cpp",
+    urls = [
+        "https://github.com/open-telemetry/opentelemetry-cpp/archive/refs/tags/v1.14.2.tar.gz",
+    ],
+)
+
 new_local_repository(
     name = "gloo",
     build_file = "//third_party:gloo.BUILD",
@@ -155,6 +162,12 @@ new_local_repository(
     path = "third_party/kineto",
 )
 
+new_local_repository(
+    name = "opentelemetry-cpp",
+    build_file = "//third_party::opentelemetry-cpp.BUILD",
+    path = "third_party/opentelemetry-cpp",
+)
+
 new_patched_local_repository(
     name = "tbb",
     build_file = "//third_party:tbb.BUILD",

cmake/Dependencies.cmake

@@ -1156,6 +1156,16 @@ if(APPLE)
   target_link_options(pybind::pybind11 INTERFACE -undefined dynamic_lookup)
 endif()
 
+# ---[ OpenTelemetry API headers
+find_package(OpenTelemetryApi)
+if(NOT OpenTelemetryApi_FOUND)
+  message(STATUS "Using third_party/opentelemetry-cpp.")
+  set(OpenTelemetryApi_INCLUDE_DIRS ${CMAKE_CURRENT_LIST_DIR}/../third_party/opentelemetry-cpp/api/include)
+endif()
+message(STATUS "opentelemetry api include dirs: " "${OpenTelemetryApi_INCLUDE_DIRS}")
+add_library(opentelemetry::api INTERFACE IMPORTED)
+target_include_directories(opentelemetry::api SYSTEM INTERFACE ${OpenTelemetryApi_INCLUDE_DIRS})
+
 # ---[ MPI
 if(USE_MPI)
   find_package(MPI)

cmake/Modules/FindOpenTelemetryApi.cmake

@@ -0,0 +1,19 @@
+# Try to find the OpenTelemetry API headers
+# OpenTelemetryApi_FOUND - system has OpenTelemetry API headers
+# OpenTelemetryApi_INCLUDE_DIRS - the OpenTelemetry API headers dir
+
+find_path(OpenTelemetryApi_INCLUDE_DIR
+    NAMES include/opentelemetry/version.h
+    DOC "The directory where Open Telemetry API headers reside"
+)
+
+set(OpenTelemetryApi_INCLUDE_DIRS ${OpenTelemetryApi_INCLUDE_DIR})
+
+include(FindPackageHandleStandardArgs)
+
+find_package_handle_standard_args(OpenTelemetryApi
+    FOUND_VAR OpenTelemetryApi_FOUND
+    REQUIRED_VARS OpenTelemetryApi_INCLUDE_DIRS
+)
+
+mark_as_advanced(OpenTelemetryApi_FOUND)

third_party/LICENSES_BUNDLED.txt

@@ -1,4 +1,4 @@
-The Pytorch repository and source distributions bundle several libraries that are
+The Pytorch repository and source distributions bundle several libraries that are 
 compatibly licensed.  We list these here.
 
 Name: DCGM
@@ -41,11 +41,28 @@ License: Apache-2.0
 Files: third_party/benchmark,
      third_party/onnx/third_party/benchmark,
      third_party/onnx-tensorrt/third_party/onnx/third_party/benchmark,
-     third_party/protobuf/third_party/benchmark
+     third_party/protobuf/third_party/benchmark,
+     third_party/opentelemetry-cpp/third_party/benchmark
   For details, see: third_party/benchmark/LICENSE,
      third_party/onnx/third_party/benchmark/LICENSE,
      third_party/onnx-tensorrt/third_party/onnx/third_party/benchmark/LICENSE,
-     third_party/protobuf/third_party/benchmark/LICENSE
+     third_party/protobuf/third_party/benchmark/LICENSE,
+     third_party/opentelemetry-cpp/third_party/benchmark/LICENSE
+
+Name: boost-vcpkg-helpers
+License: MIT
+Files: third_party/opentelemetry-cpp/tools/vcpkg/ports/boost-vcpkg-helpers
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/ports/boost-vcpkg-helpers/LICENSE.txt
+
+Name: cJSON
+License: MIT
+Files: third_party/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/civetweb/examples/rest/cJSON
+  For details, see: third_party/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/civetweb/examples/rest/cJSON/LICENSE
+
+Name: catch2
+License: BSL-1.0
+Files: third_party/opentelemetry-cpp/third_party/opentracing-cpp/3rd_party/include/opentracing/catch2
+  For details, see: third_party/opentelemetry-cpp/third_party/opentracing-cpp/3rd_party/include/opentracing/catch2/LICENSE.txt
 
 Name: clog
 License: BSD-2-Clause
@@ -104,6 +121,16 @@ Files: third_party/kineto/libkineto/third_party/dynolog/third_party/json/test/th
   For details, see: third_party/kineto/libkineto/third_party/dynolog/third_party/json/test/thirdparty/doctest/LICENSE.txt,
      third_party/nlohmann/tests/thirdparty/doctest/LICENSE.txt
 
+Name: duktape-1.5.2
+License: MIT
+Files: third_party/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/civetweb/src/third_party/duktape-1.5.2
+  For details, see: third_party/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/civetweb/src/third_party/duktape-1.5.2/LICENSE.txt
+
+Name: duktape-1.8.0
+License: MIT
+Files: third_party/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/civetweb/src/third_party/duktape-1.8.0
+  For details, see: third_party/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/civetweb/src/third_party/duktape-1.8.0/LICENSE.txt
+
 Name: dynolog
 License: MIT
 Files: third_party/kineto/libkineto/third_party/dynolog
@@ -114,22 +141,37 @@ License: BSD-3-Clause
 Files: third_party/eigen
   For details, see: third_party/eigen/COPYING.BSD
 
+Name: etw
+License: MIT
+Files: third_party/opentelemetry-cpp/exporters/etw/include/opentelemetry/exporters/etw
+  For details, see: third_party/opentelemetry-cpp/exporters/etw/include/opentelemetry/exporters/etw/LICENSE
+
+Name: expected
+License: MIT
+Files: third_party/opentelemetry-cpp/third_party/opentracing-cpp/3rd_party/include/opentracing/expected
+  For details, see: third_party/opentelemetry-cpp/third_party/opentracing-cpp/3rd_party/include/opentracing/expected/LICENSE
+
 Name: fbgemm
 License: BSD-3-Clause
 Files: third_party/fbgemm
   For details, see: third_party/fbgemm/LICENSE
 
+Name: ffnvcodec
+License: MIT with exception
+Files: third_party/opentelemetry-cpp/tools/vcpkg/ports/ffnvcodec
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/ports/ffnvcodec/LICENSE.txt
+
 Name: flatbuffers
 License: Apache-2.0
 Files: third_party/flatbuffers
-  For details, see: third_party/flatbuffers/LICENSE.txt
+  For details, see: third_party/flatbuffers/LICENSE
 
 Name: fmt
 License: MIT with exception
 Files: third_party/fmt,
      third_party/kineto/libkineto/third_party/dynolog/third_party/fmt,
      third_party/kineto/libkineto/third_party/fmt
-  For details, see: third_party/fmt/LICENSE.rst,
+  For details, see: third_party/fmt/LICENSE,
      third_party/kineto/libkineto/third_party/dynolog/third_party/fmt/LICENSE.rst,
      third_party/kineto/libkineto/third_party/fmt/LICENSE.rst
 
@@ -149,12 +191,19 @@ Files: third_party/fbgemm/third_party/googletest/googlemock/scripts/generator,
      third_party/googletest/googlemock/scripts/generator,
      third_party/kineto/libkineto/third_party/googletest/googlemock/scripts/generator,
      third_party/protobuf/third_party/googletest/googlemock/scripts/generator,
-     third_party/tensorpipe/third_party/googletest/googlemock/scripts/generator
+     third_party/tensorpipe/third_party/googletest/googlemock/scripts/generator,
+     third_party/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/googletest/googlemock/scripts/generator
   For details, see: third_party/fbgemm/third_party/googletest/googlemock/scripts/generator/LICENSE,
      third_party/googletest/googlemock/scripts/generator/LICENSE,
      third_party/kineto/libkineto/third_party/googletest/googlemock/scripts/generator/LICENSE,
      third_party/protobuf/third_party/googletest/googlemock/scripts/generator/LICENSE,
-     third_party/tensorpipe/third_party/googletest/googlemock/scripts/generator/LICENSE
+     third_party/tensorpipe/third_party/googletest/googlemock/scripts/generator/LICENSE,
+     third_party/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/googletest/googlemock/scripts/generator/LICENSE
+
+Name: gettimeofday
+License: Apache-2.0
+Files: third_party/opentelemetry-cpp/tools/vcpkg/ports/gettimeofday
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/ports/gettimeofday/LICENSE
 
 Name: gloo
 License: BSD-3-Clause
@@ -183,7 +232,9 @@ Files: third_party/fbgemm/third_party/googletest,
      third_party/protobuf/third_party/googletest,
      third_party/protobuf/third_party/googletest/googletest,
      third_party/tensorpipe/third_party/googletest,
-     third_party/tensorpipe/third_party/googletest/googletest
+     third_party/tensorpipe/third_party/googletest/googletest,
+     third_party/opentelemetry-cpp/third_party/googletest,
+     third_party/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/googletest
   For details, see: third_party/fbgemm/third_party/googletest/LICENSE,
      third_party/fbgemm/third_party/googletest/googletest/LICENSE,
      third_party/googletest/LICENSE,
@@ -193,20 +244,25 @@ Files: third_party/fbgemm/third_party/googletest,
      third_party/protobuf/third_party/googletest/LICENSE,
      third_party/protobuf/third_party/googletest/googletest/LICENSE,
      third_party/tensorpipe/third_party/googletest/LICENSE,
-     third_party/tensorpipe/third_party/googletest/googletest/LICENSE
+     third_party/tensorpipe/third_party/googletest/googletest/LICENSE,
+     third_party/opentelemetry-cpp/third_party/googletest/LICENSE,
+     third_party/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/googletest/LICENSE
 
 Name: gtest
 License: BSD-3-Clause
-Files: third_party/ideep/mkl-dnn/tests/gtest,
+Files: third_party/ideep/mkl-dnn/tests/gtests/gtest
-     third_party/ideep/mkl-dnn/third_party/oneDNN/tests/gtests/gtest
+  For details, see: third_party/ideep/mkl-dnn/tests/gtests/gtest/LICENSE
-  For details, see: third_party/ideep/mkl-dnn/tests/gtest/LICENSE,
-     third_party/ideep/mkl-dnn/third_party/oneDNN/tests/gtests/gtest/LICENSE
 
 Name: hipify_torch
 License: MIT
 Files: third_party/fbgemm/third_party/hipify_torch
   For details, see: third_party/fbgemm/third_party/hipify_torch/LICENSE.txt
 
+Name: hungarian
+License: Apache-2.0
+Files: third_party/opentelemetry-cpp/tools/vcpkg/ports/hungarian
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/ports/hungarian/LICENSE.txt
+
 Name: ideep
 License: MIT
 Files: third_party/ideep
@@ -217,10 +273,10 @@ License: BSD-3-Clause
 Files: third_party/ios-cmake
   For details, see: third_party/ios-cmake/LICENSE
 
-Name: json
+Name: irrlicht
 License: MIT
-Files: third_party/cudnn_frontend/include/contrib/nlohmann/json
+Files: third_party/opentelemetry-cpp/tools/vcpkg/ports/irrlicht
-  For details, see: third_party/cudnn_frontend/include/contrib/nlohmann/json/LICENSE.txt
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/ports/irrlicht/LICENSE.txt
 
 Name: kineto
 License: BSD-3-Clause
@@ -232,11 +288,21 @@ License: Apache-2.0
 Files: third_party/tensorpipe/third_party/libnop
   For details, see: third_party/tensorpipe/third_party/libnop/LICENSE
 
+Name: libstemmer
+License: BSD-3-Clause
+Files: third_party/opentelemetry-cpp/tools/vcpkg/ports/libstemmer
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/ports/libstemmer/LICENSE
+
 Name: libuv
 License: MIT
 Files: third_party/tensorpipe/third_party/libuv
   For details, see: third_party/tensorpipe/third_party/libuv/LICENSE
 
+Name: mimalloc
+License: MIT
+Files: third_party/mimalloc
+  For details, see: third_party/mimalloc/LICENSE
+
 Name: miniz-2.1.0
 License: MIT
 Files: third_party/miniz-2.1.0
@@ -247,6 +313,11 @@ License: Apache-2.0
 Files: third_party/ideep/mkl-dnn
   For details, see: third_party/ideep/mkl-dnn/LICENSE
 
+Name: ms-gsl
+License: MIT
+Files: third_party/opentelemetry-cpp/third_party/ms-gsl
+  For details, see: third_party/opentelemetry-cpp/third_party/ms-gsl/LICENSE
+
 Name: nccl
 License: BSD-3-Clause
 Files: third_party/nccl/nccl
@@ -257,11 +328,6 @@ License: BSD-Source-Code
 Files: third_party/neon2sse
   For details, see: third_party/neon2sse/LICENSE
 
-Name: oneDNN
-License: Apache-2.0
-Files: third_party/ideep/mkl-dnn/third_party/oneDNN
-  For details, see: third_party/ideep/mkl-dnn/third_party/oneDNN/LICENSE
-
 Name: onnx
 License: Apache-2.0
 Files: third_party/onnx
@@ -277,11 +343,46 @@ License: MIT
 Files: third_party/onnx-tensorrt
   For details, see: third_party/onnx-tensorrt/LICENSE
 
+Name: opentelemetry-cpp
+License: Apache-2.0
+Files: third_party/opentelemetry-cpp
+  For details, see: third_party/opentelemetry-cpp/LICENSE
+
+Name: opentelemetry-proto
+License: Apache-2.0
+Files: third_party/opentelemetry-cpp/third_party/opentelemetry-proto
+  For details, see: third_party/opentelemetry-cpp/third_party/opentelemetry-proto/LICENSE
+
+Name: opentracing-cpp
+License: Apache-2.0
+Files: third_party/opentelemetry-cpp/third_party/opentracing-cpp
+  For details, see: third_party/opentelemetry-cpp/third_party/opentracing-cpp/LICENSE
+
+Name: pdcurses
+License: Apache-2.0
+Files: third_party/opentelemetry-cpp/tools/vcpkg/ports/pdcurses
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/ports/pdcurses/LICENSE
+
 Name: pfs
 License: Apache-2.0
 Files: third_party/kineto/libkineto/third_party/dynolog/third_party/pfs
   For details, see: third_party/kineto/libkineto/third_party/dynolog/third_party/pfs/LICENSE
 
+Name: physac
+License: MIT
+Files: third_party/opentelemetry-cpp/tools/vcpkg/ports/physac
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/ports/physac/LICENSE
+
+Name: pqp
+License: Apache-2.0
+Files: third_party/opentelemetry-cpp/tools/vcpkg/ports/pqp
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/ports/pqp/LICENSE
+
+Name: prometheus-cpp
+License: MIT
+Files: third_party/opentelemetry-cpp/third_party/prometheus-cpp
+  For details, see: third_party/opentelemetry-cpp/third_party/prometheus-cpp/LICENSE
+
 Name: protobuf
 License: BSD-3-Clause
 Files: third_party/protobuf
@@ -308,11 +409,21 @@ Files: third_party/onnx/third_party/pybind11,
      third_party/pybind11/LICENSE,
      third_party/tensorpipe/third_party/pybind11/LICENSE
 
+Name: python
+License: BSD-3-Clause
+Files: third_party/cutlass/python
+  For details, see: third_party/cutlass/python/LICENSE.txt
+
 Name: python-peachpy
 License: BSD-2-Clause
 Files: third_party/python-peachpy
   For details, see: third_party/python-peachpy/LICENSE.rst
 
+Name: sigslot
+License: Apache-2.0
+Files: third_party/opentelemetry-cpp/tools/vcpkg/ports/sigslot
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/ports/sigslot/LICENSE
+
 Name: sleef
 License: BSL-1.0
 Files: third_party/sleef
@@ -333,6 +444,11 @@ License: Apache-2.0
 Files: third_party/tbb
   For details, see: third_party/tbb/LICENSE
 
+Name: tensorflow-common
+License: MIT
+Files: third_party/opentelemetry-cpp/tools/vcpkg/ports/tensorflow-common
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/ports/tensorflow-common/LICENSE.txt
+
 Name: tensorpipe
 License: BSD-3-Clause
 Files: third_party/tensorpipe
@@ -343,7 +459,22 @@ License: MIT with exception
 Files: third_party/kineto/libkineto/third_party/dynolog/third_party/cpr/test
   For details, see: third_party/kineto/libkineto/third_party/dynolog/third_party/cpr/test/LICENSE
 
+Name: variant
+License: BSD-3-Clause
+Files: third_party/opentelemetry-cpp/third_party/opentracing-cpp/3rd_party/include/opentracing/variant
+  For details, see: third_party/opentelemetry-cpp/third_party/opentracing-cpp/3rd_party/include/opentracing/variant/LICENSE
+
+Name: vcpkg
+License: MIT
+Files: third_party/opentelemetry-cpp/tools/vcpkg
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/LICENSE.txt
+
+Name: vulkan
+License: Apache-2.0 with exception
+Files: third_party/opentelemetry-cpp/tools/vcpkg/ports/vulkan
+  For details, see: third_party/opentelemetry-cpp/tools/vcpkg/ports/vulkan/LICENSE.txt
+
 Name: zstd
 License: BSD-3-Clause
 Files: third_party/zstd
-  For details, see: third_party/zstd/LICENSE
+  For details, see: third_party/zstd/LICENSE

third_party/build_bundled.py

@@ -102,6 +102,21 @@ def identify_license(f, exception=''):
         elif 'BoostSoftwareLicense-Version1.0' in txt:
             # Hmm, do we need to check the text?
             return 'BSL-1.0'
+        elif 'gettimeofday' in txt:
+            # Used in opentelemetry-cpp/tools/vcpkg/ports/gettimeofday
+            return 'Apache-2.0'
+        elif 'libhungarian' in txt:
+            # Used in opentelemetry-cpp/tools/vcpkg/ports/hungarian
+            return 'Apache-2.0'
+        elif 'PDCurses' in txt:
+            # Used in opentelemetry-cpp/tools/vcpkg/ports/pdcurses
+            return 'Apache-2.0'
+        elif 'Copyright1999UniversityofNorthCarolina' in txt:
+            # Used in opentelemetry-cpp/tools/vcpkg/ports/pqp
+            return 'Apache-2.0'
+        elif 'sigslot' in txt:
+            # Used in opentelemetry-cpp/tools/vcpkg/ports/sigslot
+            return 'Apache-2.0'
         elif squeeze("Clarified Artistic License") in txt:
             return 'Clarified Artistic License'
         elif all([squeeze(m) in txt.lower() for m in bsd3_txt]):

third_party/opentelemetry-cpp.BUILD

@@ -0,0 +1,71 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+load("@bazel_skylib//rules:common_settings.bzl", "bool_flag", "string_flag")
+
+package(default_visibility = ["//visibility:public"])
+
+bool_flag(
+    name = "with_abseil",
+    build_setting_default = False,
+)
+
+CPP_STDLIBS = [
+    "none",
+    "best",
+    "2014",
+    "2017",
+    "2020",
+    "2023",
+]
+
+string_flag(
+    name = "with_cxx_stdlib",
+    build_setting_default = "best",
+    values = CPP_STDLIBS,
+)
+
+cc_library(
+    name = "api",
+    hdrs = glob(["include/**/*.h"]),
+    defines = select({
+        ":with_external_abseil": ["HAVE_ABSEIL"],
+        "//conditions:default": [],
+    }) + select({
+        ":set_cxx_stdlib_none": [],
+        ### automatic selection
+        ":set_cxx_stdlib_best": ["OPENTELEMETRY_STL_VERSION=(__cplusplus/100)"],
+        # See https://learn.microsoft.com/en-us/cpp/build/reference/zc-cplusplus
+        ":set_cxx_stdlib_best_and_msvc": ["OPENTELEMETRY_STL_VERSION=(_MSVC_LANG/100)"],
+        ### manual selection
+        ":set_cxx_stdlib_2014": ["OPENTELEMETRY_STL_VERSION=2014"],
+        ":set_cxx_stdlib_2017": ["OPENTELEMETRY_STL_VERSION=2017"],
+        ":set_cxx_stdlib_2020": ["OPENTELEMETRY_STL_VERSION=2020"],
+        ":set_cxx_stdlib_2023": ["OPENTELEMETRY_STL_VERSION=2023"],
+        "//conditions:default": [],
+    }),
+    strip_include_prefix = "include",
+    tags = ["api"],
+    deps = select({
+        ":with_external_abseil": [
+            "@com_google_absl//absl/base",
+            "@com_google_absl//absl/strings",
+            "@com_google_absl//absl/types:variant",
+        ],
+        "//conditions:default": [],
+    }),
+)
+
+config_setting(
+    name = "with_external_abseil",
+    flag_values = {":with_abseil": "true"},
+)
+
+[config_setting(
+    name = "set_cxx_stdlib_%s" % v,
+    flag_values = {":with_cxx_stdlib": v},
+) for v in CPP_STDLIBS]
+
+config_setting(
+    name = "set_cxx_stdlib_best_and_msvc",
+    constraint_values = ["@bazel_tools//tools/cpp:msvc"],
+    flag_values = {":with_cxx_stdlib": "best"},
+)

torch/CMakeLists.txt

@@ -79,6 +79,7 @@ list(APPEND TORCH_PYTHON_INCLUDE_DIRECTORIES ${LIBSHM_SRCDIR})
 set(TORCH_PYTHON_LINK_LIBRARIES
     python::python
     pybind::pybind11
+    opentelemetry::api
     shm
     fmt::fmt-header-only
     ATEN_CPU_FILES_GEN_LIB)