Dataflow-based computer program visualization and refactoring

A system, comprising:

• one or more processors configured to initiate operations including:
• analyzing a computer program to determine computation tasks of the computer program and channels linking the computation tasks;
• generating, in a memory coupled to the one or more processors, a dataflow graph having nodes representing the computation tasks and edges representing the channels, wherein the edges connect the nodes;
• determining source code representations of the computation tasks;
• determining execution metrics of the computer program;
• annotating the nodes of the dataflow graph with the source code representations and at least one of the edges or the nodes with the execution metrics;
• and
• displaying the dataflow graph on a display device as annotated.

A computer program product, comprising:

• one or more computer-readable storage media, and program instructions collectively stored on the one or more computer-readable storage media, wherein the program instructions are executable by computer hardware to initiate operations including:
• analyzing a computer program to determine computation tasks of the computer program and channels linking the computation tasks;
• generating, in a memory of the computer hardware, a dataflow graph having nodes representing the computation tasks and edges representing the channels, wherein the edges connect the nodes;
• determining source code representations of the computation tasks;
• determining execution metrics of the computer program;
• annotating the nodes of the dataflow graph with the source code representations and at least one of the edges or the nodes with the execution metrics;
• and
• displaying the dataflow graph on a display device as annotated.