Better schedule, including plotting

• plot_schedule method that plots the schedule
• forward_slack and backward_slack
• Execution times supported
• Slightly different graph_id that more often do not change the previous
• scipy is now a dependency for drawing splines

Close #35 (closed)

test/test_operation.py

@@ -183,7 +183,7 @@ class TestExecutionTime:
 
     def test_set_execution_time(self):
         bfly = Butterfly()
-        bfly.set_exection_time(3)
+        bfly.exection_time = 3
 
         assert bfly.execution_time == 3
 
@@ -208,7 +208,7 @@ class TestCopyOperation:
 class TestPlotCoordinates():
     def test_simple_case(self):
         cmult = ConstantMultiplication(0.5)
-        cmult.set_exection_time(1)
+        cmult.execution_time = 1
         cmult.set_latency(3)
 
         lat, exe = cmult.get_plot_coordinates()
@@ -217,7 +217,7 @@ class TestPlotCoordinates():
 
     def test_complicated_case():
         bfly = Butterfly(latency_offsets={'in0': 2, 'in1': 3, 'out0': 5, 'out1': 10})
-        bfly.execution_time(7)
+        bfly.execution_time = 7
 
         lat, exe = bfly.get_plot_coordinates()
         assert lat == [[2, 0], [2, 0.5], [3, 0.5], [3, 1], [10, 1], [10, 0.5], [5, 0.5], [5, 0], [2, 0]]
@@ -227,7 +227,7 @@ class TestPlotCoordinates():
 class TestIOCoordinates():
     def test_simple_case(self):
         cmult = ConstantMultiplication(0.5)
-        cmult.set_exection_time(1)
+        cmult.execution_time = 1
         cmult.set_latency(3)
 
         i_c, o_c = cmult.get_io_coordinates()
@@ -236,7 +236,7 @@ class TestIOCoordinates():
 
     def test_complicated_case():
         bfly = Butterfly(latency_offsets={'in0': 2, 'in1': 3, 'out0': 5, 'out1': 10})
-        bfly.set_execution_time(7)
+        bfly.execution_time = 7
 
         i_c, o_c = bfly.get_io_coordinates()
         assert i_c == [[2, 0.25], [3, 0.75]]