Added better error message for debugging on CUDA not detected failures.

bitsandbytes/cextension.py

@@ -18,16 +18,20 @@
         CUDASetup.get_instance().generate_instructions()
         CUDASetup.get_instance().print_log_stack()
         raise RuntimeError('''
-        CUDA Setup failed despite GPU being available. Inspect the CUDA SETUP outputs above to fix your environment!
-        If you cannot find any issues and suspect a bug, please open an issue with detals about your environment:
-        https://github.com/TimDettmers/bitsandbytes/issues''')
+        CUDA Setup failed despite GPU being available. Please run the following command to get more information:
+
+        python -m bitsandbytes
+
+        Inspect the output of the command and see if you can locate CUDA libraries. You might need to add them
+        to your LD_LIBRARY_PATH. If you suspect a bug, please take the information from python -m bitsandbytes
+        and open an issue at: https://github.com/TimDettmers/bitsandbytes/issues''')
     lib.cadam32bit_g32
     lib.get_context.restype = ct.c_void_p
     lib.get_cusparse.restype = ct.c_void_p
     COMPILED_WITH_CUDA = True
 except AttributeError:
     warn("The installed version of bitsandbytes was compiled without GPU support. "
-        "8-bit optimizers and GPU quantization are unavailable.")
+        "8-bit optimizers, 8-bit multiplication, and GPU quantization are unavailable.")
     COMPILED_WITH_CUDA = False
 
 # print the setup details after checking for errors so we do not print twice

setup.py

@@ -18,7 +18,7 @@ def read(fname):
 
 setup(
     name=f"bitsandbytes",
-    version=f"0.38.0",
+    version=f"0.38.0.post2",
     author="Tim Dettmers",
     author_email="[email protected]",
     description="8-bit optimizers and matrix multiplication routines.",