Use _allocate_sinobuilder_output mechanism

nabu/app/fullfield.py

@@ -264,9 +264,12 @@ class FullFieldPipeline:
             self.sinos = None
         else:
             self._sinobuilder_copy = True
-            self.sinos = self._allocate_array(self.sino_builder.output_shape, "f", name="sinos")
+            self.sinos = self._allocate_sinobuilder_output()
             self._sinobuilder_output = self.sinos
 
+    def _allocate_sinobuilder_output(self):
+        return self._allocate_array(self.sino_builder.output_shape, "f", name="sinos")
+
 
     @use_options("reconstruction", "reconstruction")
     def _prepare_reconstruction(self):

nabu/app/fullfield_cuda.py

@@ -205,6 +205,13 @@ class CudaFullFieldPipelineLimitedMemory(CudaFullFieldPipeline):
         self.radios = self._d_radios # (radios_group_size, delta_z, width) (fits in GPU mem)
 
 
+    def _allocate_sinobuilder_output(self):
+        self._allocate_array(self.sino_builder.output_shape, "f", name="sinos")
+        self._h_sinos = np.zeros(self._d_sinos.shape, "f")
+        self._sinobuilder_output = self._h_sinos # patch self.sino_builder
+        return self._h_sinos
+
+
     def _register_callbacks(self):
         # No callbacks are registered for this subclass
         pass
@@ -338,10 +345,12 @@ class CudaFullFieldPipelineLimitedMemory(CudaFullFieldPipeline):
             # Copy H2D
             # pycuda does not support copy where "order" is not the same
             # (self.sinos might be a view on self.radios)
-            if not self.sinos.flags["C_CONTIGUOUS"]:
-                self.sinos = np.ascontiguousarray(self.sinos)
+            if not(self._sinobuilder_copy) and self.sinos.flags["C_CONTIGUOUS"]:
+                sinos = np.ascontiguousarray(self.sinos)
+            else:
+                sinos = self._h_sinos
             #
-            self._d_sinos[:, :, :] = self.sinos[:, :, :]
+            self._d_sinos[:, :, :] = sinos[:, :, :]
             # Process stack of sinograms (chunk_size, n_angles, width)
             self._reconstruct(sinos=self._d_sinos)
             # Copy D2H