replacing gpu_cpu with just gpu string for implementation

Author: dkazanc

httomo_backends/methods_database/packages/backends/httomolibgpu/httomolibgpu.yaml

@@ -148,7 +148,7 @@ recon:
     FBP2d_astra:
       pattern: sinogram
       output_dims_change: True
-      implementation: gpu_cpu
+      implementation: gpu
       save_result_default: True
       padding: False
       memory_gpu:

httomo_backends/methods_database/query.py

@@ -101,13 +101,12 @@ def get_output_dims_change(self) -> bool:
         p = self._get_method_info("output_dims_change")
         return bool(p)
 
-    def get_implementation(self) -> Literal["cpu", "gpu", "gpu_cupy", "gpu_cpu"]:
+    def get_implementation(self) -> Literal["cpu", "gpu", "gpu_cupy"]:
         p = self._get_method_info("implementation")
         assert p in [
             "gpu",
             "gpu_cupy",
             "cpu",
-            "gpu_cpu",
         ], f"The implementation arch {p} listed for method {self.module_path}.{self.method_name} is invalid"
         return p
 

tests/test_method_query.py

@@ -43,7 +43,7 @@ def test_httomolibgpu_implementation():
 
 def test_httomolibgpu_implementation2():
     query = MethodsDatabaseQuery("httomolibgpu.recon.algorithm", "FBP2d_astra")
-    assert query.get_implementation() == "gpu_cpu"
+    assert query.get_implementation() == "gpu"
 
 
 def test_httomolibgpu_output_dims_change():