def myDiscreteRandom3():
if belongs(random(), 0, 0.3333):
return 1
elif belongs(random(), 0.3333, 0.6666):
return 2
else:
return 3
def move3(cfg, nSteps, Emin, Em, Emplus1, L):
hasMoved = False
acceptances = 0
[I_EminToEm, I_EmToEmplus1, I_Emplus1ToInfty] = [0, 0, 0]
Eold = model.getEnergy(cfg)
for i in range(nSteps):
# iAtom, idim, l = s(6, L)
if hasMoved:
hasMoved = False
Eold = e
#
cfgTemp = getMove3(cfg)
e = model.getEnergy(cfgTemp)
if (e <= Emplus1):
hasMoved = True
cfg = copy.deepcopy(cfgTemp)
acceptances += 1 # accepted move.
draw(cfg.positions, e)
cfg.translate(-cfg.get_center_of_mass())
else:
e = Eold
#
if belongs(
e, Emin, Em
): # (Emin <= e <= E[m - 1]): #<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
I_EminToEm += 1 # un gol más para ∫_Emin^Em-1 Ω(E)dE
elif belongs(e, Em, Emplus1): # (E[m - 1] <= e <= Em):
I_EmToEmplus1 += 1 # un gol más para ∫_Em-1^Em Ω(E)dE
elif Emplus1 < e:
I_Emplus1ToInfty += 1
#
#
ratioAcceptances = float(
acceptances
) / nSteps #`float()` to ensure the division will be a float (python2 resembles Fortran in divisions)
if I_EminToEm == 0:
I_EminToEm = 1
alpha = I_EmToEmplus1 / float(
I_EminToEm
) # `float()` to ensure the division will be a float (python2 resembles Fortran in divisions)
print("alpha = ", float("{0:.3f}".format(alpha)))
print(float("{0:.3f}".format(ratioAcceptances)), I_EminToEm, I_EmToEmplus1,
I_Emplus1ToInfty, "...", L)
return alpha, ratioAcceptances
def move(X, sigma, epsilon, rcut, nSteps, Emin, Em, Emplus1, L):
hasMoved = False
acceptances = 0
[I_EminToEm, I_EmToEmplus1, I_Emplus1ToInfty] = [0, 0, 0]
Eold = cf.getLJenergy(X, sigma, epsilon)
# acceptances
# I_EminToEm
# I_EmToEmplus1
for i in range(nSteps):
# iAtom = i % len(X)
# iAtom = int(random() * len(X))
# idim = int(random() * 6)
# get a configuration e,X after randomly move X:
# Eold = getEnergyConfig(X)
# assert( Eo == getEnergyConfig(X) )
iAtom, idim, l = s(6, L)
if hasMoved:
hasMoved = False
Eold = e
#
# Xt = copy.deepcopy(X)
# d = Vector3(getRandomWalk(L), getRandomWalk(L), getRandomWalk(L))
# d = unitVect(idim) * getRandomWalk(L)
d = unitVect2(idim) * L * (random() - 0.5)
# d = unitVect2(idim) * l
########################################################################
Xt[iAtom] += d
########################################################################
########################################################################
#
getForceMatrix = False
#
if use_mtp:
e, eigenvalues = cf.getLJeigenvalues2(Xt, epsilon, sigma, rcut,
getForceMatrix, aCell)
elif use_aseLJ:
e, eigenvalues = cf.getLJeigenvalues(Xt, epsilon, sigma, rcut,
getForceMatrix)
#
# e = cf.getLJenergy(Xt, sigma, epsilon)
# P_old2new = mc.getProbTransition(e, Eold, Em, EmMinus1)
# P_old2new = mc.getProbTransition(e, Eold, Emplus1 + 0.0004, Em)
# P_old2new = mc.getProbTransition(e, Eold, Emplus1, Em)
# os.system("echo "+ str(e) + " >> out2.txt")
# if (e <= Emplus1 + 0.001):
# if (e <= Emplus1 + 0.0006):
# if (e <= Emplus1 + 0.0002):
if (e <= Emplus1):
# if ( P_old2new >= random() ):
# os.system("echo "+ str(e) + " >> out.txt")
hasMoved = True
# X = copy.deepcopy(Xt)
X[iAtom] += d
acceptances += 1 # accepted move.
draw(X, e)
X = maintainCenterOfMass(X)
else:
e = Eold
#
# # it has no sense to add the same configuration (not moved) to Ω:
# if hasMoved:
# acceptances += 1 # accepted move.
# #
if belongs(
e, Emin, Em
): # (Emin <= e <= E[m - 1]): #<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
I_EminToEm += 1 # un gol más para ∫_Emin^Em-1 Ω(E)dE
elif belongs(e, Em, Emplus1): # (E[m - 1] <= e <= Em):
I_EmToEmplus1 += 1 # un gol más para ∫_Em-1^Em Ω(E)dE
elif Emplus1 < e:
I_Emplus1ToInfty += 1
#
#
ratioAcceptances = float(
acceptances
) / nSteps #`float()` to ensure the division will be a float (python2 resembles Fortran in divisions)
if I_EminToEm == 0:
I_EminToEm = 1
alpha = I_EmToEmplus1 / float(
I_EminToEm
) # `float()` to ensure the division will be a float (python2 resembles Fortran in divisions)
print("alpha = ", float("{0:.3f}".format(alpha)))
print(float("{0:.3f}".format(ratioAcceptances)), I_EminToEm, I_EmToEmplus1,
I_Emplus1ToInfty, "...", L)
# acceptances
# I_EminToEm
# I_EmToEmplus1
################################################################################
# log_idos.append( log_sum_idos + log(alpha) ) # =log_idos[m]
#
# # calculate log_sum_idos:
# # Log of the sum of integrals for each interval, m=1, m=2, m=3,...
# DOSintegrals = [ exp(log_int) for log_int in log_idos ]
# log_sum_idos = log(sum(DOSintegrals))
#
# return alpha, log_idos, log_sum_idos, L
# return alpha
return alpha, ratioAcceptances
def move2(X, sigma, epsilon, rcut, nSteps, Emin, Em, Emplus1, L):
hasMoved = False
acceptances = 0
[I_EminToEm, I_EmToEmplus1, I_Emplus1ToInfty] = [0, 0, 0]
Eold = cf.getLJenergy(X, sigma, epsilon)
for i in range(nSteps):
# iAtom, idim, l = s(6, L)
if hasMoved:
hasMoved = False
Eold = e
#
# d = unitVect2(idim) * L * (random() - 0.5)
########################################################################
Xt, St = getMove(nAtoms, X, canSwap, neighbors,
S) #move includes translation or swap
# Xt[iAtom] += d
########################################################################
########################################################################
#
getForceMatrix = False
#
if use_mtp:
e, eigenvalues = cf.getLJeigenvalues2B(Xt, St, epsilon, sigma,
rcut, getForceMatrix, aCell)
elif use_aseLJ:
e, eigenvalues = cf.getLJeigenvaluesB(Xt, St, epsilon, sigma, rcut,
getForceMatrix)
#
if (e <= Emplus1):
hasMoved = True
# X = copy.deepcopy(Xt)
# X[iAtom] += d
# X = copy.deepcopy(Xt)
# S = copy.deepcopy(St)
X = Xt # ???????????????????????????????????????????????????????????
S = St
acceptances += 1 # accepted move.
draw(X, e)
X = maintainCenterOfMass(X)
else:
e = Eold
#
#
if belongs(
e, Emin, Em
): # (Emin <= e <= E[m - 1]): #<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
I_EminToEm += 1 # un gol más para ∫_Emin^Em-1 Ω(E)dE
elif belongs(e, Em, Emplus1): # (E[m - 1] <= e <= Em):
I_EmToEmplus1 += 1 # un gol más para ∫_Em-1^Em Ω(E)dE
elif Emplus1 < e:
I_Emplus1ToInfty += 1
#
#
ratioAcceptances = float(
acceptances
) / nSteps #`float()` to ensure the division will be a float (python2 resembles Fortran in divisions)
if I_EminToEm == 0:
I_EminToEm = 1
alpha = I_EmToEmplus1 / float(
I_EminToEm
) # `float()` to ensure the division will be a float (python2 resembles Fortran in divisions)
print("alpha = ", float("{0:.3f}".format(alpha)))
print(float("{0:.3f}".format(ratioAcceptances)), I_EminToEm, I_EmToEmplus1,
I_Emplus1ToInfty, "...", L)
return alpha, ratioAcceptances
def randomMCmovesParallel2(Eminimo, E_mMinus2, E_mMinus1, E_m,\
nSteps, e, X, L, structEq, Xeq, forceMatrix):
import copy
import harmonic as ha
print("Emin, E_m2, E_m1, E_m = ", Eminimo, E_mMinus2, E_mMinus1, E_m)
lCfgs = [] # to save cfgs for the next subdivision.
# where: lCfgs_m = [cfg_1, cfg_2, ..., cfg_i, ...]
# where: cfg_i = [energy_i, X_i ]
# where: cfg_i = [energy_i, X_i ]
# where: X_i = [r1, r2, r3, r4, ..., rNatoms]
# where: r_n = [x,y,z]
#===========================================================================
# paper: "The maximum displacement of the translational moves is
# automatically changed after each partitioning process to adjust the
# acceptance toward the range 25%–35%. If the acceptance rate during a
# partitioning process falls below 10% or above 70%, the partitioning
# process is repeated."
# L ~amplitud of random walk of a ...
# ...particle (dx,dy,dz) = (L*random(), L*random(), L*random())
ratioOfCfgsToSave = 0.5
ratioAcceptances = 0
# L = 0.1
repMax = 1 #10 # maximum number of repetitions to get the appropriate ratio of
# acceptances at a certain L value.
repeat = 0
ratioMin = 0.25
ratioMax = 0.35
while( (not belongs(ratioAcceptances, ratioMin, ratioMax) and\
(repeat < repMax) ) or\
continuar):
continuar = False
[I1, I2] = [0, 0]
repeat += 1
acceptances = 0
# Collect ehist for [Emin,E[m-1]] and [E[m-1],Em]:
for i in range(nSteps):
# get a configuration e,X after randomly move X:
e, X, hasMoved = mc_move(i, e, X, Xeq, forceMatrix, E_mMinus1, E_mMinus2, L, structEq)
# it has no sense to add the same configuration (not moved) to Ω:
if hasMoved:
acceptances += 1 # accepted move.
if belongs(e, E_mMinus1, E_m): # (E[m - 1] <= e <= Em):
I1 += 1 # un gol más para ∫_Em-1^Em Ω(E)dE
elif belongs(e, Eminimo, E_mMinus1): # (Emin <= e <= E[m - 1]): #<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
# elif belongs(e, E_mMinus1 - 10, E_mMinus1): # (Emin <= e <= E[m - 1]):
I2 += 1 # un gol más para ∫_Emin^Em-1 Ω(E)dE
#
# randomly save some configs to use for the next subdivision:
# if random() > ratioOfCfgsToSave: lCfgs.append([e, X])
if random.random() > ratioOfCfgsToSave: lCfgs.append([e, X])
#
if (e < 1.1 * Eminimo):
print(e, Eminimo)
########################################################################################
import os
c = counter()
nAtoms = len(X)
# out = "/Users/chinchay/Documents/9_Git/reverseEnergyPartitioning/ovitoPlots/moves." + str(c) + ".xyz"
out = "ovitoPlots/moves." + str(c) + ".xyz"
pos = str(nAtoms) + "\n\n"
for i in range(len(X)):
pos += "H " + str(X[i][0]) + " " + str(X[i][1]) + str(X[i][2]) + "\n"
#
pos += "\n"
f = open(out, "w")
f.write(pos)
f.close()
########################################################################################
assert (1 == 0)
# print(I1, I2, e, hasMoved, belongs(e, E_mMinus1 - 10, E_mMinus1), belongs(e, Eminimo, E_mMinus1), belongs(e,E_mMinus1, E_m), L)
#
ratioAcceptances = acceptances / nSteps
print(ratioAcceptances, I2, I1, e, E_mMinus1, E_m, belongs(e, Eminimo, E_mMinus1), belongs(e,E_mMinus1, E_m), L, repeat)
factor = (I1 + 1) / (I2 + 1) # '+1' to avoid zeros
assert( len(lCfgs) != 0 )
minVal = 10
if ( (I1 < minVal) and (I2 < minVal)):
# choose X with lower energy
print("A: choosing config with min energy ...")
nthMin = 1
e, X = select_start_config(lCfgs, E_mMinus1, E_m, nthMin)
continuar = True
elif factor < 1/100.0:
# choose X with higher energy
print("B: choosing config with high energy ...")
nthMin = 2
e, X = select_start_config(lCfgs, E_mMinus1, E_m, nthMin)
continuar = True
elif factor > 100:
# choose X with lower energy
print("C: choosing config with min energy ...")
nthMin = 1
e, X = select_start_config(lCfgs, E_mMinus1, E_m, nthMin)
continuar = True
#
#
# # calculate α_m, log_idos:
# alpha = I1 / I2 # MonteCarlo: ~cociente de goles ∫_Em-1^Em / ∫_Emin^Em-1
# assert(alpha != 0)
# print(alpha, L)
# log_idos.append( log_sum_idos + log(alpha) ) # =log_idos[m]
#
# # calculate log_sum_idos:
# # Log of the sum of integrals for each interval, m=1, m=2, m=3,...
# DOSintegrals = [ exp(log_int) for log_int in log_idos ]
# log_sum_idos = log(sum(DOSintegrals))
# output.put( (I1, I2, lCfgs) )
# output.put( (lCfgs, alpha, log_idos, log_sum_idos, L) )
# return lCfgs, alpha, log_idos, log_sum_idos, L
return I1, I2, lCfgs
def randomMCmoves(Eminimo, E_mMinus1, E_m, E_mplus1,\
nSteps, e, X, log_idos, log_sum_idos, L):
import copy
import os
# import harmonic as ha
Eo = getEnergyConfig(X)
Xo = copy.deepcopy(X)
lCfgs = [] # to save cfgs for the next subdivision.
# where: lCfgs_m = [cfg_1, cfg_2, ..., cfg_i, ...]
# where: cfg_i = [energy_i, X_i ]
# where: cfg_i = [energy_i, X_i ]
# where: X_i = [r1, r2, r3, r4, ..., rNatoms]
# where: r_n = [x,y,z]
#===========================================================================
# paper: "The maximum displacement of the translational moves is
# automatically changed after each partitioning process to adjust the
# acceptance toward the range 25%–35%. If the acceptance rate during a
# partitioning process falls below 10% or above 70%, the partitioning
# process is repeated."
# L ~amplitud of random walk of a ...
# ...particle (dx,dy,dz) = (L*random(), L*random(), L*random())
ratioOfCfgsToSave = 0.5
ratioAcceptances = 0
# L = 0.1
repMax = 10 #10 # maximum number of repetitions to get the appropriate ratio of
# acceptances at a certain L value.
repeat = 0
ratioMin = 0.25
ratioMax = 0.35
while( (not belongs(ratioAcceptances, ratioMin, ratioMax) and\
(repeat < repMax) ) or\
continuar):
# print(condition1, condition2, continuar, finalCondition)
continuar = False
# Reset energy histogram: ehist = [I1, I2].
# I1 = c*∫_Em-1^Em Ω(E)dE; I2 = c*∫_Emin^Em-1 Ω(E)dE, `c` is some constant.
if (repeat > 0):
# if I2 == 0:
# repeat = 0
# # L = 0.99 * L
if ratioAcceptances > ratioMax:
L = 1.1 * L
print("...... increasing L = ", float("{0:.3f}".format(L)),
repeat, ratioAcceptances)
X = copy.deepcopy(Xo)
return 0
elif ratioAcceptances < ratioMin:
L = 0.9 * L
print("...... decreasing L = ", float("{0:.3f}".format(L)),
repeat, ratioAcceptances)
X = copy.deepcopy(Xo)
return 0
#
[I_EminToEm, I_EmToEmplus1, I_Emplus1ToInfty] = [0, 0, 0]
repeat += 1
acceptances = 0
# L = L * 0.8 # Decrease the amplitud of the random walk to get the
# desired ratioAcceptances range values [25%, 35%].
# You can improve with a more sophisticated algorithm here.
# Collect ehist for [Emin,E[m-1]] and [E[m-1],Em]:
for i in range(nSteps):
# get a configuration e,X after randomly move X:
Eold = getEnergyConfig(X)
# assert( Eo == getEnergyConfig(X) )
hasMoved = False
Xtemp = copy.deepcopy(X)
Xtemp = getNewConfig(i, Xtemp, L)
Enew = getEnergyConfig(Xtemp)
# P_old2new = getProbTransition(E_new, E_old, E_m, E_m_minus_1)
# P_old2new = getProbTransition(Enew, Eold, E_mplus1, E_m)
os.system("echo " + str(Enew) + " >> out2.txt")
# if (Enew <= E_mplus1 + 0.001):
if (Enew <= E_mplus1 + 0.0006):
# if ( P_old2new >= random() ):
os.system("echo " + str(Enew) + " >> out.txt")
hasMoved = True
e = Enew
X = copy.deepcopy(Xtemp)
#
# hasMoved = True
# e = Enew
# X = copy.deepcopy(Xtemp)
# e, X, hasMoved = mc_move(i, e, X, E_mplus1, E_m, E_mMinus1, L)
# # Xo = copy.deepcopy(X)
# # assert(id(Xo) != id(X))
# # e, Xtemporal, hasMoved = mc_move(i, e, Xo, Xeq, forceMatrix, E_mMinus1, E_mMinus2, L, a1, a2, a3)
#
# # assert(id(Xo) != id(Xtemporal))
# # if (hasMoved == False):
# # for k in range(len(Xo)):
# # for l in range(3) :
# # assert(Xo[k][l] == Xtemporal[k][l])
# # #
# # X = copy.deepcopy(Xtemporal)
#
#
# c = counter()
# rHyper, deltaEharmonic = ha.getHarmonicEnergy(X, Xeq, forceMatrix)
# out = "/Users/chinchay/Documents/9_Git/reverseEnergyPartitioning/ovitoPlots/rHyperEHarmonic" + str(c) + ".txt"
# # s = str(rHyper) + " , " + str(deltaEharmonic) + " , " + str(E_new) + "\n"
# s = str(rHyper) + " , " + str(deltaEharmonic) + "\n"
# f = open(out, "w")
# f.write(s)
# f.close()
# it has no sense to add the same configuration (not moved) to Ω:
if hasMoved:
acceptances += 1 # accepted move.
if belongs(
e, Eminimo, E_m
): # (Emin <= e <= E[m - 1]): #<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
I_EminToEm += 1 # un gol más para ∫_Emin^Em-1 Ω(E)dE
elif belongs(e, E_m, E_mplus1): # (E[m - 1] <= e <= Em):
I_EmToEmplus1 += 1 # un gol más para ∫_Em-1^Em Ω(E)dE
elif E_mplus1 < e:
I_Emplus1ToInfty += 1
#
# randomly save some configs to use for the next subdivision:
if random() > ratioOfCfgsToSave: lCfgs.append([e, X])
#
if (e < 1.1 * Eminimo):
print(e, Eminimo)
########################################################################################
import os
c = counter()
nAtoms = len(X)
out = "/Users/chinchay/Documents/9_Git/reverseEnergyPartitioning/ovitoPlots/moves." + str(
c) + ".xyz"
pos = str(nAtoms) + "\n\n"
for i in range(len(X)):
pos += "H " + str(X[i][0]) + " " + str(X[i][1]) + str(
X[i][2]) + "\n"
#
pos += "\n"
f = open(out, "w")
f.write(pos)
f.close()
########################################################################################
assert (1 == 0)
# print(I1, I2, e, hasMoved, belongs(e, E_mMinus1 - 10, E_mMinus1), belongs(e, Eminimo, E_mMinus1), belongs(e,E_mMinus1, E_m), L)
#
ratioAcceptances = acceptances / nSteps
# print(ratioAcceptances, I_EminToEm, I_EmToEmplus1, e, E_m, E_mplus1, belongs(e, Eminimo, E_m), belongs(e,E_m, E_mplus1), L, repeat)
# print(ratioAcceptances, I_EminToEm, I_EmToEmplus1, I_Emplus1ToInfty, L, repeat)
f = (I_EminToEm + I_EmToEmplus1) / (I_EminToEm + I_EmToEmplus1 +
I_Emplus1ToInfty)
ff = I_EmToEmplus1 / (I_EmToEmplus1 + I_Emplus1ToInfty)
print(float("{0:.3f}".format(ratioAcceptances)),
I_EminToEm, I_EmToEmplus1, I_Emplus1ToInfty, "...",
float("{0:.3f}".format(f)), float("{0:.3f}".format(ff)), L,
repeat, Eo)
factor = (I_EmToEmplus1 + 1) / (I_EminToEm + 1) # '+1' to avoid zeros
assert (len(lCfgs) != 0)
# if ( (I_EmToEmplus1 < 100) or (I_EminToEm < 100)):
# # choose X with lower energy
# print("A: choosing config with min energy ...")
# nthMin = 1
# e, X = select_start_config(lCfgs, E_mMinus1, E_m, nthMin)
# continuar = True
if factor < 1 / 100.0:
# # choose X with higher energy
print("B: choosing config with high energy ...")
# nthMin = 2
# e, X = select_start_config(lCfgs, E_mMinus1, E_m, nthMin)
L = 1.1 * L
continuar = True
elif factor > 100:
# choose X with lower energy
print("C: choosing config with min energy ...")
# nthMin = 1
# e, X = select_start_config(lCfgs, E_mMinus1, E_m, nthMin)
L = 0.9 * L
continuar = True
#
# if ( (I1 < 100) or (I2 < 100)):
# assert( len(lCfgs) != 0 )
# print("choosing config with min energy ...")
# nthMin = 1
# e, X = select_start_config(lCfgs, E_mMinus1, E_m, nthMin)
# c = counterMin()
# if (c % 3 == 2):
# print("choosing back ...")
# nthMin = 3
# e, X = select_start_config(lCfgs, E_mMinus1, E_m, nthMin)
# #
# # if (c % 5 == 4):
# # print("increasing nSteps ...")
# # nSteps = nSteps * 2
# #
# continuar = True
# if (not belongs(ratioAcceptances, ratioMin, ratioMax)):
# assert( len(lCfgs) != 0 )
# # print("choosing config with max energy ...")
# # print("increasing L value ...")
# # nthMin = 2
# # e, Xtemp = select_start_config(lCfgs, E_mMinus1, E_m, nthMin)
# # X = copy.deepcopy(Xtemp)
#
# nthMin = 1
# e, X = select_start_config(lCfgs, E_mMinus1, E_m, nthMin)
# continuar = True
#
# if ratioAcceptances <= ratioMin:
# print("decreasing L value ...")
# L = L / 1.2
# elif ratioMax <= ratioAcceptances:
# print("increasing L value ...")
# L = L * 1.2
# # continuar = True
#===========================================================================
# calculate α_m, log_idos:
alpha = I_EmToEmplus1 / I_EminToEm # MonteCarlo: ~cociente de goles ∫_Em-1^Em / ∫_Emin^Em-1
assert (alpha != 0)
print("....................................alpha = " +
str(float("{0:.3f}".format(alpha))) + " L = " +
str(float("{0:.3f}".format(L))))
log_idos.append(log_sum_idos + log(alpha)) # =log_idos[m]
# calculate log_sum_idos:
# Log of the sum of integrals for each interval, m=1, m=2, m=3,...
DOSintegrals = [exp(log_int) for log_int in log_idos]
log_sum_idos = log(sum(DOSintegrals))
return lCfgs, alpha, log_idos, log_sum_idos, L