Implementation:Triton inference server Server L0 Backend Python Test
| Knowledge Sources | |
|---|---|
| Domains | Testing, Python_Backend |
| Last Updated | 2026-02-13 17:00 GMT |
Overview
QA test script for validating the Python backend in the Triton Inference Server.
Description
This is the main test runner for Python backend tests. It validates the full lifecycle of Python-based models including model loading, inference execution, error handling, and custom Python model behaviors. The script orchestrates multiple sub-tests covering Python backend features such as auto-complete configuration, custom execution, request cancellation, model instance management, input/output tensor handling, and BLS (Business Logic Scripting) pipelines. Each sub-test prepares a dedicated model repository, starts the server, runs the corresponding Python test client, and checks for expected results.
Usage
Run as part of the Triton QA test suite to validate the Python backend. Typically executed in CI/CD pipelines within the Triton Docker container environment.
Code Reference
Source Location
- Repository: Triton Inference Server
- File: qa/L0_backend_python/test.sh
- Lines: 1-560
Signature
#!/bin/bash
# Key functions and variables
source ../common/util.sh
SERVER=/opt/tritonserver/bin/tritonserver
SERVER_ARGS="--model-repository=${MODELDIR} --backend-directory=${BACKEND_DIR}"
SERVER_LOG="./python_backend_test.server.log"
CLIENT_LOG="./python_backend_test.client.log"
TEST_PY="./python_test.py"
Import
# Sources common utilities
source ../common/util.sh
I/O Contract
Inputs
| Name | Type | Required | Description |
|---|---|---|---|
| DATADIR | env var | No | Directory containing test data |
| TRITON_DIR | env var | No | Path to Triton server installation |
| MODEL_REPO | directory | Yes | Generated test model repository with Python backend models |
Outputs
| Name | Type | Description |
|---|---|---|
| exit code | int | 0 on success, 1 on failure |
| test logs | files | Server logs and test output in test directory |
Usage Examples
Running the Test
cd qa/L0_backend_python/
bash test.sh