You haven't specified the pkg version number. It's the *most* important detail in a bug report! (there's also a version in [testing])

sry, my bad, also i thought this would be catched by the pkg to bugtracker "add bug" link.

it applies to current community version of python-pytorch-rocm: 1.13.1-1
and most probably also to 1.13.1-2 in community testing
because the only difference is one additional gpu build architecture, which i am not using.

What's the output of the command in your case? For me, it prints /opt/rocm

for me it prints an empty string.


```ipython
In [30]: from torch.utils.cpp_extension import ROCM_HOME
...: print("ROCM_HOME:'{}', type(ROCM_HOME): '{}'".format(ROCM_HOME, type(ROCM_HOME)))
ROCM_HOME:'', type(ROCM_HOME): '<class 'str'>'
```

i looked at the source of 1.13.1 at the function `_find_rocm_home() -> Optional[str]`,
https://github.com/pytorch/pytorch/blob/49444c3e546bf240bed24a101e747422d1f8a0ee/torch/utils/cpp_extension.py#L119

and replicated the path that triggers an empty string: L125-L133

so if ROCM_HOME is not set as an environment var, it tries to guess from inferring from the real path of hipcc,
using `which`, but if hipcc is not in path, it wont throw an exception, but return ''

Line 125-133:
```
try:
pipe_hipcc = subprocess.Popen(
["which hipcc | xargs readlink -f"], stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
hipcc, _ = pipe_hipcc.communicate()
# this will be either <ROCM_HOME>/hip/bin/hipcc or <ROCM_HOME>/bin/hipcc
rocm_home = os.path.dirname(os.path.dirname(hipcc.decode(*SUBPROCESS_DECODE_ARGS).rstrip('\r\n')))
if os.path.basename(rocm_home) == 'hip':
rocm_home = os.path.dirname(rocm_home)
except Exception:

```

so if you have set ('ROCM_HOME') or ('ROCM_PATH') the function will take it from there,
if not it will try to find the path of hipcc and if that fails use hardcoded "/opt/rocm".

but not finding hipcc will not trigger an exception, and will return '' instead.

the code path is still present in pytorch@master, and blame shows the corresponding code lines got edited Apr 15, 2021.


+ Workaround: As a workaround setting either ROCM_HOME or ROCM_PATH as environment variable works for me

Oh! /opt/rocm/bin is part of my PATH therefore the command worked in my case. This is actually a problem that should be reported upstream.

ack, i made an upstream bug for pytorch@master

https://github.com/pytorch/pytorch/issues/95633

and a pull request

https://github.com/pytorch/pytorch/pull/95634