| name | pyasc-env-check |
| description | pyasc development environment check skill. Verifies Python version, pyasc installation, CANN toolkit, optional torch/torch_npu, and runtime configuration. Trigger — environment check, pyasc installation, CANN setup, Python version verification. |
pyasc Environment Check
Quickly verify the development environment for pyasc kernel development.
Workflow
Environment check
|
+-- Python version check (3.9-3.12)
|
+-- pyasc installation check
|
+-- CANN toolkit check
|
+-- Optional: torch / torch_npu check
|
+-- Optional: NPU device check
Quick check
bash scripts/check_env.sh
Check items
| Check item | Command | Required |
|---|
| Python version | python3 --version | Yes (3.9-3.12) |
| pyasc installed | python3 -c "import asc; print(asc.__version__)" | Yes |
| CANN toolkit | Check ASCEND_HOME_PATH | Yes |
| numpy | python3 -c "import numpy; print(numpy.__version__)" | Yes (< 2.0) |
| torch | python3 -c "import torch; print(torch.__version__)" | Optional |
| torch_npu | python3 -c "import torch_npu" | Optional (for NPU tensors) |
| NPU devices | npu-smi info | Optional (for NPU backend) |
Environment variables
| Variable | Purpose | Required |
|---|
ASCEND_HOME_PATH | CANN Toolkit path | Yes |
PYASC_HOME | pyasc JIT cache root | Optional |
PYASC_CACHE_DIR | pyasc JIT cache directory | Optional |
PYASC_DUMP_PATH | Dump ASC-IR and generated code | Optional (debugging) |
CANN version compatibility
| pyasc version | CANN version |
|---|
| v1.0.0 | CANN 8.0.0 |
| v1.1.0 | CANN 8.1.0 |
| v1.2.0+ | CANN 9.0.0 |
This project is verified against CANN 9.0.0 (ascendai/cann:9.0.0-beta.2-910b-ubuntu22.04-py3.11).
Backend availability
| Backend | Requirements |
|---|
| Model (simulator) | CANN toolkit installed, simulator libraries in LD_LIBRARY_PATH |
| NPU | CANN toolkit + NPU hardware (Atlas A2/A3) |
Troubleshooting
import asc fails: Install pyasc with pip install pyasc or build from source- CANN not found: Run
source /usr/local/Ascend/ascend-toolkit/set_env.sh
- numpy >= 2.0 error: Downgrade with
pip install "numpy<2"
- Model backend fails: Check
LD_LIBRARY_PATH includes CANN simulator libs
References
