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engine.py
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engine.py
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from __future__ import division
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from subprocess import Popen, STDOUT, PIPE
import sys
import statepoint
import glob
import time
class OpenMCEngine(QWidget):
def __init__(self, parent=None):
QWidget.__init__(self,parent=parent)
self.outputlog = "output.log"
self.currently_running = False
def run(self,params,stencil):
self.make_inputs(stencil)
self.execute(params)
def run_plot(self,stencil):
self.make_inputs(stencil)
worker = Worker(self,plot=True)
self.progress = QProgressDialog("Processing Plot...","Cancel",0,100,self)
self.progress.setWindowTitle("Processing Plot")
self.progress.setMinimumDuration(0)
self.progress.setWindowModality(Qt.WindowModal)
self.connect(self.progress,SIGNAL("canceled()"),worker.cancel)
self.connect(worker,SIGNAL("finished error"),self.progress,SLOT("cancel()"))
self.connect(worker,SIGNAL("finished success"),self.progress,SLOT("cancel()"))
self.progress.setValue(0)
# if we make the progress bar persist as a member of the engine class, we
# can call setValue on it to update the value it displays
QObject.connect(worker,SIGNAL("finished success"),self.process_geometry_plot)
worker.start()
def make_inputs(self,stencil):
geotemp = 'tmpdir/minicore_inputs/geometry.template'
geofile = 'tmpdir/minicore_inputs/geometry.xml'
with open(geotemp,'r') as fh:
lines = fh.read().splitlines()
rowbegin = 7697 # where does core lattice start
nlines = 5
colbegin = 7
for i in range(nlines):
aline = lines[rowbegin + i] # extract line
sline = aline.split() # split line by spaces
# check for corner indents in row
if i == 0 or i == nlines - 1:
for j in range(3):
sline[colbegin + j + 1] = self.map_core(stencil[i][j+1])
else:
for j in range(5):
sline[colbegin + j] = self.map_core(stencil[i][j])
# replace the line
newstr = ''
for item in sline:
newstr += '{0} '.format(item)
lines[rowbegin + i] = newstr
# rewrite file
with open(geofile,'w') as fh:
for aline in lines:
fh.write(aline + '\n')
def map_core(self,guid):
if guid == 1:
return str(144) # 1.6% No BAs
if guid == 2:
return str(180) # 2.4% No BAs
if guid == 3:
return str(184) # 2.4% 12 BAs
if guid == 4:
return str(196) # 3.1% No BAs
if guid == 5:
return str(200) # 3.1% 20 BAs
def execute(self,params):
if self.currently_running: return
self.currently_running = True
worker = Worker(self)
QObject.connect(worker,SIGNAL("finished success"),self.run_completed)
worker.start()
def run_completed(self):
self.currently_running = False
self.process_tallies()
# def parse_output(self):
# # parse output here and fire signal with new datapoints for plotting
# # populate data dictionary from the output
# data = {}
# data['shannon'] = 1.3
# data['keff'] = 1.0
# self.emit(SIGNAL("new plot data"),data)
def process_geometry_plot(self):
proc = Popen(['convert','tmpdir/minicore_inputs/1_slice.ppm','tmpdir/minicore_inputs/1_slice.png'])
proc.wait()
self.emit(SIGNAL("new geometry plot"),'tmpdir/minicore_inputs/1_slice.png')
def extract_mean(self, sp, tally_id, score_id):
# extract results
results = sp.extract_results(tally_id,score_id)
# extract means and copy
mean = results['mean'].copy()
# reshape and integrate over energy
mean = mean.reshape(results['bin_max'],order='F')
mean = mean/mean.sum()*(mean > 1.e-8).sum()
return mean
def process_tallies(self):
# get statepoint filename
spfile = glob.glob('tmpdir/minicore_outputs/statepoint*')[0]
# extract all means
sp = statepoint.StatePoint(spfile)
# plot
sp.read_results()
# extract distributions
nfiss = self.extract_mean(sp, 1, 'nu-fission')
flux2 = self.extract_mean(sp, 2, 'flux')
flux1 = self.extract_mean(sp, 3, 'flux')
# write out data
self.write_gnuplot_data(nfiss, flux1, flux2)
# run gnuplot
Popen(['gnuplot','tmpdir/minicore_outputs/nfiss.plot'])
Popen(['gnuplot','tmpdir/minicore_outputs/flux1.plot'])
Popen(['gnuplot','tmpdir/minicore_outputs/flux2.plot'])
self.emit(SIGNAL("new output plots"),
["tmpdir/minicore_outputs/nfiss.png",
"tmpdir/minicore_outputs/flux1.png"])
def write_gnuplot_data(self, nfiss, flux1, flux2):
nfiss_str = ""
for i in range(nfiss.shape[0]):
for j in range(nfiss.shape[1]):
nfiss_str += '{0} '.format(nfiss[i,j,0])
nfiss_str += '\n'
flux1_str = ""
for i in range(flux1.shape[1]):
for j in range(flux1.shape[2]):
flux1_str += '{0} '.format(flux1[0,i,j,0])
flux1_str += '\n'
flux2_str = ""
for i in range(flux2.shape[1]):
for j in range(flux2.shape[2]):
flux2_str += '{0} '.format(flux2[0,i,j,0])
flux2_str += '\n'
with open('tmpdir/minicore_outputs/nfiss.dat','w') as fh:
fh.write(nfiss_str)
with open('tmpdir/minicore_outputs/flux1.dat','w') as fh:
fh.write(flux1_str)
with open('tmpdir/minicore_outputs/flux2.dat','w') as fh:
fh.write(flux2_str)
class Worker(QThread):
def __init__(self,parent,plot=False):
'''Parent must be defined to stop early garbage collection'''
QThread.__init__(self,parent)
self.plot = plot
self.cancelled = False
def run(self):
try:
if self.plot:
proc = Popen(['mpiexec','-np','4','openmc','--plot','tmpdir/minicore_inputs'])
else:
proc = Popen(['mpiexec','-np','4','openmc','tmpdir/minicore_inputs'])
while proc.poll() is None:
if self.cancelled:
proc.kill()
self.emit(SIGNAL("finished error"))
return
time.sleep(0.1)
self.emit(SIGNAL("finished success"))
except OSError:
print "Problem running OpenMC! Is the exe in the path?"
self.emit(SIGNAL("finished error"))
def cancel(self):
self.cancelled = True