Fixes for RTD build errors (#606)

Co-authored-by: Shaden Smith <Shaden.Smith@microsoft.com>

deepspeed/git_version_info.py

@@ -2,8 +2,12 @@ try:
     #  This is populated by setup.py
     from .git_version_info_installed import *
 except ModuleNotFoundError:
+    import os
+    if os.path.isfile('version.txt'):
         # Will be missing from checkouts that haven't been installed (e.g., readthedocs)
         version = open('version.txt', 'r').read().strip()
+    else:
+        version = "0.0.0"
     git_hash = '[none]'
     git_branch = '[none]'
 

deepspeed/ops/sparse_attention/softmax.py

@@ -224,8 +224,8 @@ class Softmax:
 
     For more details about sparsity config, please see `Generative Modeling with Sparse Transformers`: https://arxiv.org/abs/1904.10509
     """
-
-    sparse_softmax = _sparse_softmax.apply
+    def sparse_softmax(*args, **kwargs):
+        return _sparse_softmax.apply(*args, **kwargs)
 
     def make_lut(self, device):
         """Generates the sparsity layout used in block-sparse softmax

docs/code-docs/source/conf.py

@@ -79,4 +79,4 @@ add_module_names = True
 
 autoclass_content = 'both'
 
-autodoc_mock_imports = ["torch", "apex", "mpi4py", "tensorboardX", "numpy"]
+autodoc_mock_imports = ["torch", "apex", "mpi4py", "tensorboardX", "numpy", "cupy"]

requirements/requirements-readthedocs.txt

 tqdm
-psutil