fixes for cupyweapper and dependencies

Author: dkazanc

httomolibgpu/cupywrapper.py

@@ -1,3 +1,4 @@
+cupy_run = False
 try:
     import cupy as cp
     import nvtx
@@ -6,7 +7,7 @@
         cp.cuda.Device(0).compute_capability
         cupy_run = True
     except cp.cuda.runtime.CUDARuntimeError:
-        print("CuPy library is a major dependency for HTTomolibgpu, please install")
+        print("CuPy library is installed but GPU is not accessible")
         import numpy as cp
 except ImportError as e:
     print(
@@ -15,6 +16,4 @@
     from unittest.mock import Mock
     import numpy as cp
 
-    cupy_run = False
-
     nvtx = Mock()

httomolibgpu/prep/phase.py

@@ -128,7 +128,6 @@ def paganin_filter_savu(
     # Note: this takes considerable time on GPU...
     data = cp.pad(data, ((0, 0), (pad_y, pad_y), (pad_x, pad_x)), mode=pad_method)
 
-    # Define array to hold result, which will not have the padding applied to it
     precond_kernel_float = cp.ElementwiseKernel(
         "T data",
         "T out",

pyproject.toml

@@ -37,7 +37,8 @@ classifiers = [
 requires-python = ">=3.10"
 dynamic = ["version"]
 dependencies = [
-    "cupy",
+    "cupy==12.3.0",
+    "nvtx",
     "numpy",
     "scipy",
     "pillow",