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Commit ac924ed9 authored by Daniel Brown's avatar Daniel Brown
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adding riemann caching for fair comparison between romhoom

parent 65dd5cf3
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bin/test_romhom.py
View file @ ac924ed9
......@@ -2,28 +2,27 @@ from pykat.utilities.maps import read_map, tiltmap, surfacemap
from pykat.utilities.knm import *
from pykat.utilities.optics.gaussian_beams import beam_param
import time
import numpy as np
couplings = np.array([[[0,0,0,0], [0,0,1,0], [0,0,0,1]],
[[1,0,0,0], [1,0,1,0], [1,0,0,1]],
[[0,1,0,0], [0,1,1,0], [0,1,0,1]]])
couplings = makeCouplingMatrix(5)
q1 = beam_param(w0=3e-2, z=0)
q2 = beam_param(w0=3e-2, z=0)
size = np.array([200,200])
stepsize = 0.2/(size-1)
size = np.array([1200, 1200])
stepsize = 0.3/(size-1)
# This map has points evenly spaced about the axes
m = tiltmap("tilt", size, stepsize, (1e-6, 0))
m = tiltmap("tilt", size, stepsize, (1e-6, 1e-6))
# Shifting the central point changes the results slightly
# but this is about a 1e-7 change, probably due to extra
# clipping
m.center += 20
m.center += 0
print "Generating weights..."
t0 = time.time()
w, EI = m.generateROMWeights(isModeMatched=True)
#w.writeToFile("testWeights.rom")
w.writeToFile("testWeights.rom")
print "Completed in ", time.time()-t0
print "computing Riemann knm..."
......@@ -31,15 +30,14 @@ t0 = time.time()
K1 = knmHG(couplings, q1, q2, surface_map=m)
tr = time.time()-t0
print "Completed in ", tr
print np.abs(K1)
#print np.abs(K1)
print "computing ROMHOM knm..."
t0 = time.time()
K2 = knmHG(couplings, q1, q2, surface_map=m, method="romhom")
tt = time.time()-t0
print "Completed in ", tt
print np.abs(K2)
#print np.abs(K2)
print "Speed up", tr/tt
......
pykat/utilities/knm.py
View file @ ac924ed9
......@@ -8,9 +8,33 @@ import numpy as np
import pykat
import collections
import math
from romhom import u_star_u
from progressbar import ProgressBar, ETA, Percentage, Bar
def makeCouplingMatrix(max_order):
max_order = int(max_order)
c = []
for n in range(0, max_order+1):
for m in range(0, max_order+1):
if n+m <= max_order:
c.append([n,m])
M = []
for i in c:
row = []
for j in c:
e = list(i)
e.extend(j)
row.append(e)
M.append(row)
return np.array(M)
def riemann_HG_knm(x, y, mode_in, mode_out, q1, q2, q1y=None, q2y=None, Axy=None):
def riemann_HG_knm(x, y, mode_in, mode_out, q1, q2, q1y=None, q2y=None, Axy=None, cache=None):
if Axy == None:
Axy == np.ones((len(x), len(y)))
......@@ -23,19 +47,62 @@ def riemann_HG_knm(x, y, mode_in, mode_out, q1, q2, q1y=None, q2y=None, Axy=None
if len(mode_in) != 2 or len(mode_out) != 2:
raise BasePyKatException("Both mode in and out should be a container with modes [n m]")
Hg_in = HG_beam(qx=q1, qy=q1y, n=mode_in[0], m=mode_in[1])
Hg_out = HG_beam(qx=q2, qy=q2y, n=mode_out[0], m=mode_out[1])
dx = abs(x[1] - x[0])
dy = abs(y[1] - y[0])
dy = abs(y[1] - y[0])
if cache == None:
Hg_in = HG_beam(qx=q1, qy=q1y, n=mode_in[0], m=mode_in[1])
Hg_out = HG_beam(qx=q2, qy=q2y, n=mode_out[0], m=mode_out[1])
U1 = Hg_in.Unm(x,y)
U2 = Hg_out.Unm(x,y).conjugate()
U1 = Hg_in.Unm(x,y)
U2 = Hg_out.Unm(x,y).conjugate()
return dx * dy * np.einsum('ij,ij', Axy, U1*U2)
else:
strx = "u1[%i,%i]" % (mode_in[0], mode_out[0])
stry = "u2[%i,%i]" % (mode_in[1], mode_out[1])
return dx * dy * np.einsum('ij,ij', Axy, np.outer(cache[strx], cache[stry]))
return dx * dy * np.einsum('ij,ij', Axy, U1*U2)
def __gen_riemann_knm_cache(x, y, couplings, q1, q2, q1y=None, q2y=None):
if q1y == None:
q1y = q1
if q2y == None:
q2y = q2
it = np.nditer(couplings, flags=['refs_ok','f_index'])
cache = {}
while not it.finished:
try:
mode_in = [int(it.next()), int(it.next())]
mode_out = [int(it.next()), int(it.next())]
strx = "u1[%i,%i]" % (mode_in[0], mode_out[0])
stry = "u2[%i,%i]" % (mode_in[1], mode_out[1])
Hg_in = HG_beam(qx=q1, qy=q1y, n=mode_in[0], m=mode_in[1])
Hg_out = HG_beam(qx=q2, qy=q2y, n=mode_out[0], m=mode_out[1])
if strx not in cache:
cache[strx] = Hg_in.Un(x) * Hg_out.Un(x).conjugate()
if stry not in cache:
cache[stry] = Hg_in.Um(y) * Hg_out.Um(y).conjugate()
except StopIteration:
break
return cache
def __gen_ROM_HG_knm_cache(weights, couplings, q1, q2, q1y=None, q2y=None):
if q1y == None:
......@@ -65,14 +132,10 @@ def __gen_ROM_HG_knm_cache(weights, couplings, q1, q2, q1y=None, q2y=None):
stry = "y[%i,%i]" % (mode_in[1], mode_out[1])
if strx not in cache:
cache[strx] = u_star_u(q1.z, q2.z, q1.w0, q2.w0, mode_in[0], mode_out[0], weights.nodes)
if q1 == q1y and q2 == q2y:
cache[stry] = cache[strx]
elif stry not in cache:
cache[stry] = u_star_u(q1y.z, q2y.z, q1y.w0, q2y.w0, mode_in[1], mode_out[1], weights.nodes)
cache[strx] = u_star_u(q1.z, q2.z, q1.w0, q2.w0, mode_in[0], mode_out[0], weights.EI["xm"].nodes)
if stry not in cache:
cache[stry] = u_star_u(q1y.z, q2y.z, q1y.w0, q2y.w0, mode_in[1], mode_out[1], weights.EI["ym"].nodes)
except StopIteration:
break
......@@ -94,12 +157,14 @@ def ROM_HG_knm(weights, mode_in, mode_out, q1, q2, q1y=None, q2y=None, cache=Non
npr = mode_in[1]
mpr = mode_out[1]
foundSymmetry = np.all(weights.EI["ym"].nodes == -weights.EI["xm"].nodes) and np.all(weights.EI["xp"].nodes == -weights.EI["xm"].nodes) and np.all(weights.EI["yp"].nodes == -weights.EI["ym"].nodes)
foundSymmetry = np.all(weights.EI["ym"].nodes == weights.EI["xm"].nodes) and np.all(weights.EI["xp"].nodes == -weights.EI["xm"].nodes) and np.all(weights.EI["yp"].nodes == -weights.EI["ym"].nodes)
if foundSymmetry:
if cache == None:
u_x_nodes = u_star_u(q1.z, q2.z, q1.w0, q2.w0, n, m, weights.EI["xm"].nodes)
u_y_nodes = u_star_u(q1.z, q2.z, q1.w0, q2.w0, n, m, weights.EI["ym"].nodes)
u_x_nodes = u_star_u(q1.z, q2.z, q1.w0, q2.w0, n, m, weights.EI["xm"].nodes)
u_y_nodes = u_star_u(q1y.z, q2y.z, q1y.w0, q2y.w0, npr, mpr, weights.EI["ym"].nodes)
w_ij_Q1Q3 = weights.w_ij_Q1 + weights.w_ij_Q3
w_ij_Q2Q4 = weights.w_ij_Q2 + weights.w_ij_Q4
w_ij_Q1Q2 = weights.w_ij_Q1 + weights.w_ij_Q2
......@@ -107,12 +172,22 @@ def ROM_HG_knm(weights, mode_in, mode_out, q1, q2, q1y=None, q2y=None, cache=Non
w_ij_Q2Q3 = weights.w_ij_Q2 + weights.w_ij_Q3
w_ij_Q3Q4 = weights.w_ij_Q3 + weights.w_ij_Q4
w_ij_Q1Q2Q3Q4 = weights.w_ij_Q1 + weights.w_ij_Q2 + weights.w_ij_Q3 + weights.w_ij_Q4
else:
strx = "x[%i,%i]" % (mode_in[0], mode_out[0])
stry = "y[%i,%i]" % (mode_in[1], mode_out[1])
u_x_nodes = cache[strx]
u_y_nodes = cache[stry]
w_ij_Q1Q3 = cache["w_ij_Q1Q3"]
w_ij_Q2Q4 = cache["w_ij_Q2Q4"]
w_ij_Q1Q2 = cache["w_ij_Q1Q2"]
w_ij_Q1Q4 = cache["w_ij_Q1Q4"]
w_ij_Q2Q3 = cache["w_ij_Q2Q3"]
w_ij_Q3Q4 = cache["w_ij_Q3Q4"]
w_ij_Q1Q2Q3Q4 = cache["w_ij_Q1Q2Q3Q4"]
u_xy_nodes = np.outer(u_x_nodes, u_y_nodes)
......@@ -157,7 +232,7 @@ def ROM_HG_knm(weights, mode_in, mode_out, q1, q2, q1y=None, q2y=None, cache=Non
def knmHG(couplings, q1, q2, surface_map=None, q1y=None, q2y=None, method="riemann"):
def knmHG(couplings, q1, q2, surface_map=None, q1y=None, q2y=None, method="riemann", verbose=True):
if q1y == None:
q1y = q1
......@@ -183,7 +258,7 @@ def knmHG(couplings, q1, q2, surface_map=None, q1y=None, q2y=None, method="riema
it = np.nditer(couplings, flags=['refs_ok','f_index'])
i = 0
if method == "romhom":
if surface_map == None:
raise BasePyKatException("Using 'romhom' method requires a surface map to be specified")
......@@ -192,28 +267,55 @@ def knmHG(couplings, q1, q2, surface_map=None, q1y=None, q2y=None, method="riema
if weights == None:
raise BasePyKatException("The ROM weights need to be generated for this map before use.")
if verbose: print "Computing caches"
cache = __gen_ROM_HG_knm_cache(weights, couplings, q1=q1, q2=q2, q1y=q1y, q2y=q2y)
romcache = None#__gen_ROM_HG_knm_cache(weights, couplings, q1=q1, q2=q2, q1y=q1y, q2y=q2y)
elif method == "riemann":
if verbose: print "Computing caches"
cache = __gen_riemann_knm_cache(x, y, couplings, q1, q2, q1y=None, q2y=None)
else:
romcache = None
cache = None
weights = None
if verbose:
p = ProgressBar(maxval=couplings.size, widgets=["Knm (%s): " % method, Percentage(), Bar(), ETA()])
while not it.finished:
try:
mode_in = [int(it.next()), int(it.next())]
mode_out = [int(it.next()), int(it.next())]
if method == "riemann":
K[i] = riemann_HG_knm(x, y, mode_in, mode_out, q1=q1, q2=q2, q1y=q1y, q2y=q2y, Axy=Axy)
K[i] = riemann_HG_knm(x, y, mode_in, mode_out, q1=q1, q2=q2, q1y=q1y, q2y=q2y, Axy=Axy, cache=cache)
elif method == "romhom":
K[i] = ROM_HG_knm(weights, mode_in, mode_out, q1=q1, q2=q2, q1y=q1y, q2y=q2y, cache=romcache)
K[i] = ROM_HG_knm(weights, mode_in, mode_out, q1=q1, q2=q2, q1y=q1y, q2y=q2y, cache=cache)
else:
raise BasePyKatException("method value '%s' not accepted" % method)
i +=1
if verbose:
p.update(i*4)
except StopIteration:
break
return K.reshape(couplings.shape[:-1])
\ No newline at end of file
return K.reshape(couplings.shape[:-1])
pykat/utilities/romhom.py
View file @ ac924ed9
......@@ -4,6 +4,7 @@ import os.path
import pykat
import collections
from progressbar import ProgressBar, ETA, Percentage, Bar
from itertools import combinations_with_replacement as combinations
from pykat.utilities.optics.gaussian_beams import beam_param, HG_beam
from scipy.linalg import inv
......@@ -150,21 +151,22 @@ def makeReducedBasis(x, isModeMatched=True, tolerance = 1e-12, sigma = 1):
for i in range(len(params)):
q1 = beam_param(w0=params[i][0], z=params[i][2])
q1 = beam_param(w0=float(params[i][0]), z=float(params[i][2]))
if isModeMatched:
q2 = q1
n = int(params[i][2])
m = int(params[i][3])
w0_1 = params[i][0]
w0_2 = w0_1
re_q1 = params[i][1]
re_q2 = re_q1
else:
q2 = beam_param(w0=params[i][1], z=params[i][3])
q2 = beam_param(w0=float(params[i][1]), z=float(params[i][3]))
n = int(params[i][4])
m = int(params[i][5])
w0_1 = q1.w0
w0_2 = q2.w0
re_q1 = q1.z
re_q2 = q2.z
TS[IDx] = u_star_u(re_q1, re_q2, w0_1, w0_2, n, m, x)
# normalize
......@@ -248,11 +250,8 @@ def makeEmpiricalInterpolant(RB):
return EmpiricalInterpolant(B=np.array(B), nodes=np.array(x_nodes, dtype=np.float64), node_indices=np.array(node_indices, dtype=np.int32), limits=RB.limits, x=RB.x)
from progressbar import ProgressBar, ETA, Percentage, Bar
def makeWeights(smap, EI, verbose=True):
# get full A_xy
A_xy = smap.z_xy()
......
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