remove torch dependency (pytorch#449)

* remove torch dependency

* push

* push

* push

* push

* push

* push

* Update pre_build_script.sh

* Update version.txt

* push

packaging/pre_build_script.sh

@@ -9,4 +9,12 @@ set -eux
 
 echo "This script is run before building torchao binaries"
 
+python -m pip install --upgrade pip
+if [ -z "$PYTORCH_VERSION" ]; then
+    PYTORCH_DEP="torch"
+else
+    PYTORCH_DEP="torch==$PYTORCH_VERSION"
+fi
+pip install $PYTORCH_DEP
+
 pip install setuptools wheel twine auditwheel

setup.py

@@ -110,15 +110,6 @@ def get_extensions():
 
     return ext_modules
 
-# Mimic code from torchvision https://github.com/pytorch/vision/blob/143d078b28f00471156a4e562dd3836370acc9ee/setup.py#L58
-pytorch_dep = "torch"
-if os.getenv("PYTORCH_VERSION"):
-    pytorch_dep += "==" + os.getenv("PYTORCH_VERSION")
-
-requirements = [
-    pytorch_dep,
-]
-
 setup(
     name=package_name,
     version=version+version_suffix,
@@ -128,7 +119,6 @@ def get_extensions():
         "torchao.kernel.configs": ["*.pkl"],
     },
     ext_modules=get_extensions() if use_cpp != "0" else None,
-    install_requires=requirements,
     extras_require={"dev": read_requirements("dev-requirements.txt")},
     description="Package for applying ao techniques to GPU models",
     long_description=open("README.md").read(),

torchao/prototype/mx_formats/custom_cast.py

@@ -15,7 +15,7 @@
 # TODO(future): if needed, make the below work on previous PyTorch versions,
 # just need to hunt down the previous location of `libdevice`. An assert
 # at the callsite prevents usage of this on unsupported versions.
-if TORCH_VERSION_AFTER_2_4:
+if TORCH_VERSION_AFTER_2_4 and has_triton():
     from torch._inductor.runtime.triton_helpers import libdevice
 
 from torchao.prototype.mx_formats.constants import (

version.txt

@@ -1 +1 @@
-0.3.0
+0.3.1