diff --git a/Python/numpi.py b/Python/numpi.py new file mode 100644 index 0000000000000000000000000000000000000000..aff65e6229c1e851cd23c9196a4e64ad720ea989 --- /dev/null +++ b/Python/numpi.py @@ -0,0 +1,21 @@ +# +# numpi.py +# Neil Gershenfeld 1/23/17 +# calculation of pi by a numpy sum +# pi = 3.14159265358979323846 +# + +from numpy import * +import time + +NPTS = 10000000 +a = 0.5 +b = 0.75 +c = 0.25 +start_time = time.time() +i = arange(1,(NPTS+1),dtype=float64) +pi = sum(0.5/((i-0.75)*(i-.25))) +end_time = time.time() +mflops = NPTS*5.0/(1.0e6*(end_time-start_time)) +print "NPTS = %d, pi = %f"%(NPTS,pi) +print "time = %f, estimated MFlops = %f"%(end_time-start_time,mflops) diff --git a/Python/pi.py b/Python/pi.py new file mode 100755 index 0000000000000000000000000000000000000000..649fc5605a14b40cee15846f7d982cf6e1c086bc --- /dev/null +++ b/Python/pi.py @@ -0,0 +1,22 @@ +# +# pi.py +# Neil Gershenfeld 1/23/17 +# calculation of pi by a scalar sum +# pi = 3.14159265358979323846 +# + +import time + +NPTS = 10000000 +a = 0.5 +b = 0.75 +c = 0.25 +pi = 0 +start_time = time.time() +for i in range(1,(NPTS+1)): + pi += a/((i-b)*(i-c)) +end_time = time.time() +mflops = NPTS*5.0/(1.0e6*(end_time-start_time)) +print "NPTS = %d, pi = %f"%(NPTS,pi) +print "time = %f, estimated MFlops = %f"%(end_time-start_time,mflops) +