fix: Fix triton backend build [nvbug 5396469] (#6098)

Signed-off-by: Patrice Castonguay <[email protected]>

Author: pcastonguay

tests/integration/defs/triton_server/test_triton.py

@@ -508,7 +508,7 @@ def test_cpp_unit_tests(tritonserver_test_root, test_name, llm_root):
 
     run_shell_command(
         f"cd {llm_root}/triton_backend/inflight_batcher_llm/build && "
-        f"cmake .. -DTRTLLM_DIR={llm_root} -DCMAKE_INSTALL_PREFIX=install/ -DBUILD_TESTS=ON -DUSE_CXX11_ABI=ON "
+        f"cmake .. -DTRTLLM_DIR={llm_root} -DCMAKE_INSTALL_PREFIX=install/ -DBUILD_TESTS=ON  -DUSE_CXX11_ABI=ON -DTRITON_COMMON_REPO_TAG=r25.05 -DTRITON_CORE_REPO_TAG=r25.05 -DTRITON_THIRD_PARTY_REPO_TAG=r25.05 -DTRITON_BACKEND_REPO_TAG=r25.05 "
         "&& make -j8 install", llm_root)
 
     # Run the cpp unit tests

triton_backend/inflight_batcher_llm/scripts/build.sh

@@ -51,7 +51,8 @@ if [[ "$BUILD_UNIT_TESTS" == "true" ]]; then
   BUILD_TESTS_ARG="-DBUILD_TESTS=ON -DUSE_CXX11_ABI=ON"
 fi
 
-cmake -DCMAKE_INSTALL_PREFIX:PATH=`pwd`/install ${BUILD_TESTS_ARG} ..
+# TODO: Remove specifying Triton version after cmake version is upgraded to 3.31.8
+cmake -DCMAKE_INSTALL_PREFIX:PATH=`pwd`/install ${BUILD_TESTS_ARG} -DTRITON_COMMON_REPO_TAG=r25.05 -DTRITON_CORE_REPO_TAG=r25.05 -DTRITON_THIRD_PARTY_REPO_TAG=r25.05 -DTRITON_BACKEND_REPO_TAG=r25.05 ..
 make install
 
 mkdir -p /opt/tritonserver/backends/tensorrtllm