def apply_modifier(vpr_args, io_grid, seed=0):
with Silence():
vpr_context = VPRContext(vpr_args)
placement = vpr_context.get_random_placement()
placement.set_io(io_grid)
calc = BBCalculator.create(placement)
initial_cost = calc.compute_cost()
modifier = get_modifier(placement, seed=seed)
new_placement = modifier.get_placement()
return new_placement.get_io_grid(), new_placement.get_grid()
if __name__ == '__main__':
import sys
args = _parse_args()
vpr_args = ['./vpr', args.netlist_file, args.arch_file] + ('placed.out '\
'routed.out -place_only -fast -nodisp -place_algorithm '\
'bounding_box -seed %d' % args.seed).split(' ')
print vpr_args
vpr_context = VPRContext(vpr_args)
new_placements = []
placement = vpr_context.get_random_placement()
calc = BBCalculator.create(placement)
initial_cost = calc.compute_cost()
for i in range(args.run_count):
modifier = get_modifier(placement, seed=i)
new_placement = modifier.get_placement()
new_placements.append(new_placement)
final_costs = []
for p in new_placements:
calc = BBCalculator.create(p)
final_costs.append(calc.compute_cost())
np_final_costs = np.array(final_costs)
print 'Initial cost: %s' % initial_cost
print 'Final costs: %s' % np_final_costs
print 'Mean cost: %s' % np.mean(np_final_costs)
