1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
#!/usr/bin/env python
import sys
import optparse
import time
import multiprocessing
import detectors
import optics
import gpu
import g4gen
from io import root
import numpy as np
import math
import ROOT
def info(type, value, tb):
if hasattr(sys, 'ps1') or not sys.stderr.isatty():
# we are in interactive mode or we don't have a tty-like
# device, so we call the default hook
sys.__excepthook__(type, value, tb)
else:
import traceback, pdb
# we are NOT in interactive mode, print the exception...
traceback.print_exception(type, value, tb)
print
# ...then start the debugger in post-mortem mode.
pdb.pm()
sys.excepthook = info
class GeneratorProcess(multiprocessing.Process):
def __init__(self, particle, energy, position, direction, nevents, material):
multiprocessing.Process.__init__(self)
self.particle = particle
self.energy = energy
self.position = position
self.direction = direction
self.nevents = nevents
self.material = material
self.queue = multiprocessing.Queue()
def run(self):
print >>sys.stderr, 'Starting generator thread...'
generator = g4gen.G4Generator(self.material)
for i in xrange(self.nevents):
photons = generator.generate_photons(particle_name=self.particle,
total_energy=self.energy,
position=self.position,
direction=self.direction)
self.queue.put(photons)
def write_event(T, ev, event_id, hits, photon_start=None, photon_stop=None):
ev.event_id = event_id
if photon_start is not None:
photons = photon_start
root.fill_photons(ev, True,
len(photons['pos']),
np.ravel(photons['pos']),
np.ravel(photons['dir']),
np.ravel(photons['pol']),
photons['wavelength'], photons['t0'])
if photon_stop is not None:
photons = photon_stop
root.fill_photons(ev, False,
len(photons['pos']),
np.ravel(photons['pos']),
np.ravel(photons['dir']),
np.ravel(photons['pol']),
photons['wavelength'], photons['t0'],
photons['histories'], photons['last_hit_triangles'])
root.fill_hits(ev, len(hits['t']), hits['t'], hits['q'], hits['history'])
T.Fill()
# Allow profile decorator to exist, but do nothing if not running under kernprof
try:
profile = profile
except NameError:
profile = lambda x: x
@profile
def main():
parser = optparse.OptionParser('%prog')
parser.add_option('-b', type='int', dest='nbits', default=10)
parser.add_option('-j', type='int', dest='device', default=None)
parser.add_option('-n', type='int', dest='nblocks', default=64)
parser.add_option('--detector', type='string', dest='detector', default='microlbne')
parser.add_option('--nevents', type='int', dest='nevents', default=100)
parser.add_option('--particle', type='string', dest='particle', default='e-')
parser.add_option('--energy', type='float', dest='energy', default=100.0)
parser.add_option('--pos', type='string', dest='pos', default='(0,0,0)')
parser.add_option('--dir', type='string', dest='dir', default='(1,0,0)')
parser.add_option('--save-photon-start', action='store_true',
dest='save_photon_start', default=False,
help='Save initial photon vertices to disk')
parser.add_option('--save-photon-stop', action='store_true',
dest='save_photon_stop', default=False,
help='Save final photon vertices to disk')
options, args = parser.parse_args()
if len(args) != 1:
print 'Must specify output filename!'
sys.exit(1)
else:
output_filename = args[0]
if options.nevents <= 0:
print '--nevents must be greater than 0!'
sys.exit(1)
position = np.array(eval(options.pos), dtype=float)
direction = np.array(eval(options.dir), dtype=float)
detector = detectors.find(options.detector)
print >>sys.stderr, 'Creating BVH for detector "%s" with %d bits...' % (options.detector, options.nbits)
detector.build(bits=options.nbits)
print >>sys.stderr, 'Creating generator...'
detector_material = optics.water
generator_thread = GeneratorProcess(particle=options.particle,
energy=options.energy,
position=position,
direction=direction,
nevents=options.nevents,
material=detector_material)
print >>sys.stderr, 'WARNING: ASSUMING DETECTOR IS WATER!!'
# Do this now so we can get ahead of the photon propagation
print >>sys.stderr, 'Starting GEANT4 generator...'
generator_thread.start()
print >>sys.stderr, 'Initializing GPU...'
gpu_worker = gpu.GPU(options.device)
print >>sys.stderr, 'Loading detector onto GPU...'
gpu_worker.load_geometry(detector)
print >>sys.stderr, 'Initializing random numbers generators...'
gpu_worker.setup_propagate()
gpu_worker.setup_daq(max(detector.pmtids))
# Create output file
f = ROOT.TFile(output_filename, 'RECREATE')
ev, T = root.make_tree('T')
# Set generator info
ev.mc.particle = options.particle
ev.mc.gen_pos.SetXYZ(*position)
ev.mc.gen_dir.SetXYZ(*direction)
ev.mc.gen_total_e = options.energy
print >>sys.stderr, 'Starting simulation...'
start_sim = time.time()
nphotons = 0
for i in xrange(options.nevents):
photons = generator_thread.queue.get()
assert len(photons['pos']) > 0, 'GEANT4 generated event with no photons!'
nphotons += len(photons['pos'])
gpu_worker.load_photons(**photons)
gpu_worker.propagate()
gpu_worker.run_daq()
hits = gpu_worker.get_hits()
if options.save_photon_start:
photon_start = photons
else:
photon_start = None
if options.save_photon_stop:
photon_stop = gpu_worker.get_photons()
else:
photon_stop = None
write_event(T, ev, i, hits,
photon_start=photon_start, photon_stop=photon_stop)
if i % 10 == 0:
print >>sys.stderr, "\rEvent:", i,
end_sim = time.time()
print >>sys.stderr, "\rEvent:", options.nevents - 1
T.Write()
f.Close()
print >>sys.stderr, 'Done. %1.1f events/sec, %1.0f photons/sec.' % (options.nevents/(end_sim - start_sim), nphotons/(end_sim - start_sim))
if __name__ == '__main__':
main()
|
