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Posted to commits@tvm.apache.org by "vfdff (via GitHub)" <gi...@apache.org> on 2025/03/03 03:39:37 UTC
[I] [Bug] how to get the active libtvm.so when we run a script [tvm]
vfdff opened a new issue, #17698:
URL: https://github.com/apache/tvm/issues/17698
As we known, for a PE binary, we can use ldd to show the active dynamic library we used, but we don't have similar method to get it for a script
### Expected behavior
I expect I use the libtvm.so matched to my configuration PYTHONPATH, but it seems it may use another libtvm.so
For example, When I config the following **PYTHONPATH**, I expected we use the libtvm.so under /home/zhongyunde/tvm/python, but in fact we don't have the libtvm.so under /home/zhongyunde/tvm/python, and it still can find the tvm module when we run the python script
```
export TVM_HOME=/home/zhongyunde/tvm
export PYTHONPATH=$TVM_HOME/python
(mlir_venv) (base) root@998ee80b761b:/home/zhongyunde/tvm# ls /home/zhongyunde/tvm/build/libtvm.so -lt
-rwxr-xr-x 1 root root 183057984 Mar 3 03:05 /home/zhongyunde/tvm/build/libtvm.so
```
### Environment
Any environment details, such as: Operating System, TVM version, etc
```
Ubuntu 7.5.0-3ubuntu1~18.04 (cat /proc/version)
Python 3.11.0
```
### Steps to reproduce
1、we build the libtvm.so local with source, and we add string **dd zyd** to mask my local building file libtvm.so
2、run the python matmul_ansor.py after we config the PYTHONPATH as following，but we still get **Generate Sketches without dd zyd** after we took a look at the run log, so we can make sure we don't use the libtvm.so new modified source
```
export TVM_HOME=/home/zhongyunde/tvm
export PYTHONPATH=$TVM_HOME/python
```
(/py311-tts) root@998ee80b761b:/home/zhongyunde/source/test/ansor# python matmul_ansor.py
* the snip of the run log
refer to https://github.com/apache/tvm/issues/17692
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Re: [I] [Bug] how to get the active libtvm.so when we run a script [tvm]
Posted by "vfdff (via GitHub)" <gi...@apache.org>.
vfdff commented on issue #17698:
URL: https://github.com/apache/tvm/issues/17698#issuecomment-2693286466
* When I switch to the environment **mlir_venv** ,which is used to build the above tvm source, then I see the additions string **dd zyd**
* but the libtvm.so are not new installed
```
(mlir_venv) (base) root@998ee80b761b:/home/zhongyunde/source/test/ansor# find /home/zhongyunde/mlir_venv -name libtvm.so | xargs -i bash -c "ls {} -lt"
-rwxr-xr-x 1 root root 177122408 Dec 19 09:09 /home/zhongyunde/mlir_venv/bin/libtvm.so
-rwxr-xr-x 1 root root 177122408 Dec 19 09:11 /home/zhongyunde/mlir_venv/lib/libtvm.so
```
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Re: [I] [Bug] how to get the active libtvm.so when we run a script [tvm]
Posted by "vfdff (via GitHub)" <gi...@apache.org>.
vfdff closed issue #17698: [Bug] how to get the active libtvm.so when we run a script
URL: https://github.com/apache/tvm/issues/17698
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Re: [I] [Bug] how to get the active libtvm.so when we run a script [tvm]
Posted by "vfdff (via GitHub)" <gi...@apache.org>.
vfdff commented on issue #17698:
URL: https://github.com/apache/tvm/issues/17698#issuecomment-2696234627
* oh, It can use **LD_DEBUG** to get the path of libtvm.so, eg:
> LD_DEBUG=libs python3 -m pdb dd4.py
then I see load **/home/zhongyunde/tvm/build/libtvm.so** on environment **mlir_venv**,
and load **/usr/local/sbin/libtvm.so** on environment **/py311-tts**
* related file dd4.py can be simple as following:
```
import tvm
```
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Re: [I] [Bug] how to get the active libtvm.so when we run a script [tvm]
Posted by "vfdff (via GitHub)" <gi...@apache.org>.
vfdff commented on issue #17698:
URL: https://github.com/apache/tvm/issues/17698#issuecomment-2693223556
* I try to use os.path.abspath to get the path of libtvm.so, but in fact there is no such file for the return value
(/py311-tts) root@998ee80b761b:/home/zhongyunde/source/test/ansor# python getpath.py
library path: /home/zhongyunde/source/test/ansor/libtvm.so
(/py311-tts) @998ee80b761b:/home/zhongyunde/source/test/ansor# ls /home/zhongyunde/source/test/ansor/libtvm.so
ls: cannot access '/home/zhongyunde/source/test/ansor/libtvm.so': No such file or directory
**file getpath.py**
```
import ctypes
import os
libc = ctypes.CDLL("libtvm.so") # Linux 示例
libc_path = os.path.abspath(libc._name)
print(f"library path: {libc_path}")
```
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