Add a note about synthesis

ex.py

@@ -19,18 +19,15 @@ prgm = Program(
 )
 
 outputs = [R8.A]
-test_cases = [TestCase()]
+test_cases = [TestCase(), TestCase(state=CPUState(carry=1))]
 
 params = OptimizationParameters(max_size=4)
 
-initial_cost = cost(prgm, test_cases, outputs, prgm)
-initial_cycles = prgm.perf()
-
 print("Program to optimize:")
 prgm.display()
 
-print(f"Cost: {initial_cost[0]}")
-print(f"Cycles: {initial_cycles}")
+print(f"Cost: 0.0")
+print(f"Cycles: {prgm.perf()}")
 
 start_time = time()
 

gbso/optimize.py

@@ -10,8 +10,10 @@ from gbso.program.program import Program
 EPSILON = 0.00001
 
 DEFAULT_ANNEALING_CONSTANT = 0.5
-DEFAULT_SYNTHESIS_ITERS = 0
 DEFAULT_OPTIMIZE_ITERS = 5_000_000
+
+# By default, we set synthesis iters = 0 and num candidates = 1 to skip synthesis
+DEFAULT_SYNTHESIS_ITERS = 0
 DEFAULT_NUM_CANDIDATES = 1
 
 DEFAULT_PROB_OPCODE = 0.25