Added an empty CuQuantumExecutor class.

Signed-off-by: Dmitry I. Lyakh <quant4me@gmail.com>

src/runtime/CMakeLists.txt

@@ -16,11 +16,11 @@ add_library(${LIBRARY_NAME}
 add_dependencies(${LIBRARY_NAME} exatensor-build)
 
 target_include_directories(${LIBRARY_NAME}
-  PUBLIC . graph optimizer executor ${CMAKE_SOURCE_DIR}/src/exatn)
+  PUBLIC . graph optimizer executor executor/cuquantum ${CMAKE_SOURCE_DIR}/src/exatn)
 
 target_link_libraries(${LIBRARY_NAME}
                       PUBLIC CppMicroServices exatn-utils exatn-numerics exatn-runtime-graph
-                      PRIVATE Boost::graph)
+                      PRIVATE Boost::graph exatn_runtime_cuquantum)
 
 exatn_configure_library_rpath(${LIBRARY_NAME})
 

src/runtime/executor/CMakeLists.txt

@@ -37,10 +37,14 @@ usfunctionembedresources(TARGET
                          manifest.json)
 
 target_link_libraries(${LIBRARY_NAME}
-  PUBLIC CppMicroServices exatn-numerics exatn-runtime exatn_runtime_cuquantum
+  PUBLIC CppMicroServices exatn-numerics exatn-runtime
   PRIVATE ExaTensor::ExaTensor
 )
 
+if(CUQUANTUM)
+  target_link_libraries(${LIBRARY_NAME} PUBLIC exatn_runtime_cuquantum)
+endif()
+
 exatn_configure_plugin_rpath(${LIBRARY_NAME})
 
 if(CUQUANTUM)

src/runtime/executor/cuquantum/cuquantum_executor.cu

@@ -8,7 +8,7 @@ Rationale:
 
 **/
 
-//#ifdef CUQUANTUM
+#ifdef CUQUANTUM
 
 #include "cuquantum_executor.hpp"
 
@@ -26,4 +26,4 @@ CuQuantumExecutor::CuQuantumExecutor()
 } //namespace runtime
 } //namespace exatn
 
-//#endif //CUQUANTUM
+#endif //CUQUANTUM

src/runtime/executor/cuquantum/cuquantum_executor.hpp

 /** ExaTN: Tensor Runtime: Tensor network executor: NVIDIA cuQuantum
-REVISION: 2021/12/14
+REVISION: 2021/12/20
 
 Copyright (C) 2018-2021 Dmitry Lyakh
 Copyright (C) 2018-2021 Oak Ridge National Laboratory (UT-Battelle)
 
 Rationale:
+ - ExaTN graph executor may accept whole tensor networks for execution
+   via the optional cuQuantum backend in which case the graph executor
+   will delegate execution of whole tensor networks to CuQuantumExecutor.
 
 **/
 
-//#ifdef CUQUANTUM
+#ifdef CUQUANTUM
 
 #ifndef EXATN_RUNTIME_CUQUANTUM_EXECUTOR_HPP_
 #define EXATN_RUNTIME_CUQUANTUM_EXECUTOR_HPP_
 
+#include "tensor_network.hpp"
+#include "tensor_operation.hpp"
+
 #include <cutensornet.h>
 #include <cutensor.h>
 #include <cuda_runtime.h>
@@ -34,6 +40,15 @@ public:
 
  virtual ~CuQuantumExecutor() = default;
 
+ int execute(numerics::TensorNetwork & network,
+             TensorOpExecHandle * exec_handle);
+
+ bool sync(TensorOpExecHandle op_handle,
+           int * error_code,
+           bool wait = true);
+
+ bool sync();
+
 protected:
 
 };
@@ -43,4 +58,4 @@ protected:
 
 #endif //EXATN_RUNTIME_CUQUANTUM_EXECUTOR_HPP_
 
-//#endif //CUQUANTUM
+#endif //CUQUANTUM

src/runtime/tensor_runtime.cpp

 /** ExaTN:: Tensor Runtime: Task-based execution layer for tensor operations
-REVISION: 2021/09/22
+REVISION: 2021/12/14
 
 Copyright (C) 2018-2021 Dmitry Lyakh, Tiffany Mintz, Alex McCaskey
 Copyright (C) 2018-2021 Oak Ridge National Laboratory (UT-Battelle)
@@ -10,6 +10,10 @@ Copyright (C) 2018-2021 Oak Ridge National Laboratory (UT-Battelle)
 
 #include "talshxx.hpp"
 
+#ifdef CUQUANTUM
+#include "cuquantum_executor.hpp"
+#endif
+
 #ifdef MPI_ENABLED
 #include "mpi.h"
 #endif

src/runtime/tensor_runtime.hpp

 /** ExaTN:: Tensor Runtime: Task-based execution layer for tensor operations
-REVISION: 2021/09/22
+REVISION: 2021/12/14
 
 Copyright (C) 2018-2021 Dmitry Lyakh, Tiffany Mintz, Alex McCaskey
 Copyright (C) 2018-2021 Oak Ridge National Laboratory (UT-Battelle)

ExaTensor @ cf2acb52

-Subproject commit c3c16d0927fa405520b20aca8d30c520ab9c1ece
+Subproject commit cf2acb5276c3e1d60986e6ea8f50bce1949e75e6