def Pi(num_steps): sum = 0 start = time.time() # Call the function implemented in the C extention here sum = cpi.loop(num_steps) pi = sum/num_steps end = time.time() print "Pi with %d steps is %.20f in %f secs"\ %(num_steps,\ pi, end-start)
def Pi(num_steps): comm = MPI.COMM_WORLD rank = comm.Get_rank() size = comm.Get_size() sum = 0 start = time.time() # Call the function implemented in the C extention here num_steps2 = num_steps/size begin = num_steps2 * rank end = num_steps2 * (rank+1) local_sum = cpi.loop(num_steps,begin,end) sum = comm.reduce(local_sum, op=MPI.SUM, root=0) if rank == 0: end = time.time() pi = sum/num_steps print "Pi with %d steps is %.20f in %f secs"\ %(num_steps,\ pi, end-start)
def Pi(num_steps):
comm = MPI.COMM_WORLD
rank = comm.Get_rank()
size = comm.Get_size()
sum = 0
start = time.time()
# Call the function implemented in the C extention here
num_steps2 = num_steps / size
begin = num_steps2 * rank
end = num_steps2 * (rank + 1)
local_sum = cpi.loop(num_steps, begin, end)
sum = comm.reduce(local_sum, op=MPI.SUM, root=0)
if rank == 0:
end = time.time()
pi = sum / num_steps
print "Pi with %d steps is %.20f in %f secs"\
%(num_steps,\
pi, end-start)
