def _run(self, duration, logf, logt, log_interval, report_nan, progress,
msg):
# Simulation times
if duration < 0:
raise Exception('Simulation duration can\'t be negative.')
tmin = self._time
tmax = tmin + duration
# Gather global variables in fiber model
gf = []
gt = []
for label in self._global:
v = self._modelf.binding(label)
if v is not None:
gf.append(v.qname())
v = self._modelt.binding(label)
if v is not None:
gt.append(v.qname())
# Parse logf argument
logf = myokit.prepare_log(logf,
self._modelf,
dims=self._ncellsf,
global_vars=gf,
if_empty=myokit.LOG_STATE + myokit.LOG_BOUND,
allowed_classes=myokit.LOG_STATE +
myokit.LOG_BOUND + myokit.LOG_INTER,
precision=self._precision)
# Parse logt argument
logt = myokit.prepare_log(logt,
self._modelt,
dims=self._ncellst,
global_vars=gt,
if_empty=myokit.LOG_STATE + myokit.LOG_BOUND,
allowed_classes=myokit.LOG_STATE +
myokit.LOG_BOUND + myokit.LOG_INTER,
precision=self._precision)
# Create list of intermediary fiber variables that need to be logged
inter_logf = []
vars_checked = set()
for var in logf.keys():
var = myokit.split_key(var)[1]
if var in vars_checked:
continue
vars_checked.add(var)
var = self._modelf.get(var)
if var.is_intermediary() and not var.is_bound():
inter_logf.append(var)
# Create list of intermediary tissue variables that need to be logged
inter_logt = []
vars_checked = set()
for var in logt.keys():
var = myokit.split_key(var)[1]
if var in vars_checked:
continue
vars_checked.add(var)
var = self._modelt.get(var)
if var.is_intermediary() and not var.is_bound():
inter_logt.append(var)
# Get preferred platform/device combo from configuration file
platform, device = myokit.OpenCL.load_selection_bytes()
# Generate kernels
kernel_file = os.path.join(myokit.DIR_CFUNC, KERNEL_FILE)
args = {
'precision': self._precision,
'native_math': self._native_math,
'diffusion': True,
'fields': [],
'rl_states': {},
}
args['model'] = self._modelf
args['vmvar'] = self._vmf
args['bound_variables'] = self._bound_variablesf
args['inter_log'] = inter_logf
args['paced_cells'] = self._paced_cells
if myokit.DEBUG:
print('-' * 79)
print(
self._code(kernel_file,
args,
line_numbers=myokit.DEBUG_LINE_NUMBERS))
else:
kernelf = self._export(kernel_file, args)
args['model'] = self._modelt
args['vmvar'] = self._vmt
args['bound_variables'] = self._bound_variablest
args['inter_log'] = inter_logt
args['paced_cells'] = []
if myokit.DEBUG:
print('-' * 79)
print(
self._code(kernel_file,
args,
line_numbers=myokit.DEBUG_LINE_NUMBERS))
import sys
sys.exit(1)
else:
kernelt = self._export(kernel_file, args)
# Logging period (0 = disabled)
log_interval = 1e-9 if log_interval is None else float(log_interval)
if log_interval <= 0:
log_interval = 1e-9
# Get progress indication function (if any)
if progress is None:
progress = myokit._Simulation_progress
if progress:
if not isinstance(progress, myokit.ProgressReporter):
raise ValueError(
'The argument "progress" must be either a subclass of'
' myokit.ProgressReporter or None.')
# Run simulation
if duration > 0:
# Initialize
state_inf = self._statef
state_int = self._statet
state_outf = list(state_inf)
state_outt = list(state_int)
self._sim.sim_init(
platform,
device,
kernelf,
kernelt,
self._ncellsf[0],
self._ncellsf[1],
self._ncellst[0],
self._ncellst[1],
self._vmf.indice(),
self._vmt.indice(),
self._gf[0],
self._gf[1],
self._gt[0],
self._gt[1],
self._gft,
self._cfx,
self._ctx,
self._cty,
tmin,
tmax,
self._step_size,
state_inf,
state_int,
state_outf,
state_outt,
self._protocol,
logf,
logt,
log_interval,
[x.qname().encode('ascii') for x in inter_logf],
[x.qname().encode('ascii') for x in inter_logt],
)
try:
t = tmin
if progress:
# Loop with feedback
with progress.job(msg):
r = 1.0 / duration if duration != 0 else 1
while t < tmax:
t = self._sim.sim_step()
if t < tmin:
# A numerical error has occurred.
break
if not progress.update(min((t - tmin) * r, 1)):
raise myokit.SimulationCancelledError()
else:
# Loop without feedback
while t < tmax:
t = self._sim.sim_step()
if t < tmin:
# A numerical error has occurred.
break
finally:
# Clean even after KeyboardInterrupt or other Exception
self._sim.sim_clean()
# Update states
self._statef = state_outf
self._statet = state_outt
# Check for NaN's, print error output
if report_nan and (logf.has_nan() or logt.has_nan()):
txt = ['Numerical error found in simulation logs.']
try:
# NaN encountered, show how it happened
part, time, icell, var, value, states, bound = self.find_nan(
logf, logt)
model = self._modelt if part == 'tissue' else self._modelf
txt.append('Encountered numerical error in ' + part +
' simulation at t=' + str(time) + ' in cell (' +
','.join([str(x) for x in icell]) + ') when ' +
var + '=' + str(value) + '.')
n_states = len(states)
txt.append('Obtained ' + str(n_states) + ' previous state(s).')
if n_states > 1:
txt.append('State before:')
txt.append(model.format_state(states[1]))
txt.append('State during:')
txt.append(model.format_state(states[0]))
if n_states > 1:
txt.append('Evaluating derivatives at state before...')
try:
derivs = model.eval_state_derivatives(
states[1], precision=self._precision)
txt.append(
model.format_state_derivatives(states[1], derivs))
except myokit.NumericalError as ee:
txt.append(str(ee))
except myokit.FindNanError as e:
txt.append(
'Unable to pinpoint source of NaN, an error occurred:')
txt.append(str(e))
raise myokit.SimulationError('\n'.join(txt))
# Return logs
return logf, logt
def _run(self, duration, log, log_interval, report_nan, progress, msg):
# Simulation times
if duration < 0:
raise Exception('Simulation time can\'t be negative.')
tmin = self._time
tmax = tmin + duration
# Gather global variables in model
g = []
for label in self._global:
v = self._model.binding(label)
if v is not None:
g.append(v.qname())
# Parse log argument
log = myokit.prepare_log(log,
self._model,
dims=self._dims,
global_vars=g,
if_empty=myokit.LOG_STATE + myokit.LOG_BOUND,
allowed_classes=myokit.LOG_STATE +
myokit.LOG_INTER + myokit.LOG_BOUND,
precision=self._precision)
# Create list of intermediary variables that need to be logged
inter_log = []
vars_checked = set()
for var in log.iterkeys():
var = myokit.split_key(var)[1]
if var in vars_checked:
continue
vars_checked.add(var)
var = self._model.get(var)
if var.is_intermediary() and not var.is_bound():
inter_log.append(var)
# Get preferred platform/device combo from configuration file
platform, device = myokit.OpenCL.load_selection()
# Compile template into string with kernel code
kernel_file = os.path.join(myokit.DIR_CFUNC, KERNEL_FILE)
args = {
'model': self._model,
'precision': self._precision,
'native_math': self._native_math,
'bound_variables': self._bound_variables,
'inter_log': inter_log,
'diffusion': self._diffusion_enabled,
'fields': self._fields.keys(),
'paced_cells': self._paced_cells,
}
if myokit.DEBUG:
print('-' * 79)
print(
self._code(kernel_file,
args,
line_numbers=myokit.DEBUG_LINE_NUMBERS))
import sys
sys.exit(1)
kernel = self._export(kernel_file, args)
# Logging period (0 = disabled)
log_interval = 1e-9 if log_interval is None else float(log_interval)
if log_interval <= 0:
log_interval = 1e-9
# Create field values vector
n = len(self._fields) * self._nx * self._ny
if n:
field_data = self._fields.itervalues()
field_data = [np.array(x, copy=False) for x in field_data]
field_data = np.vstack(field_data)
field_data = list(field_data.reshape(n, order='F'))
else:
field_data = []
# Get progress indication function (if any)
if progress is None:
progress = myokit._Simulation_progress
if progress:
if not isinstance(progress, myokit.ProgressReporter):
raise ValueError(
'The argument "progress" must be either a subclass of'
' myokit.ProgressReporter or None.')
# Run simulation
arithmetic_error = False
if duration > 0:
# Initialize
state_in = self._state
state_out = list(state_in)
self._sim.sim_init(
platform,
device,
kernel,
self._nx,
self._ny,
self._diffusion_enabled,
self._gx,
self._gy,
self._connections,
tmin,
tmax,
self._step_size,
state_in,
state_out,
self._protocol,
log,
log_interval,
[x.qname() for x in inter_log],
field_data,
)
t = tmin
try:
if progress:
# Loop with feedback
with progress.job(msg):
r = 1.0 / duration if duration != 0 else 1
while t < tmax:
t = self._sim.sim_step()
if not progress.update(min((t - tmin) * r, 1)):
raise myokit.SimulationCancelledError()
else:
# Loop without feedback
while t < tmax:
t = self._sim.sim_step()
except ArithmeticError:
arithmetic_error = True
finally:
# Clean even after KeyboardInterrupt or other Exception
self._sim.sim_clean()
# Update state
self._state = state_out
# Check for NaN
if report_nan and (arithmetic_error or log.has_nan()):
txt = ['Numerical error found in simulation logs.']
try:
# NaN encountered, show how it happened
time, icell, var, value, states, bound = self.find_nan(log)
txt.append('Encountered numerical error at t=' + str(time) +
' in cell (' + ','.join([str(x) for x in icell]) +
') when ' + var + '=' + str(value) + '.')
n_states = len(states)
txt.append('Obtained ' + str(n_states) + ' previous state(s).')
if n_states > 1:
txt.append('State before:')
txt.append(self._model.format_state(states[1]))
txt.append('State during:')
txt.append(self._model.format_state(states[0]))
if n_states > 1:
txt.append('Evaluating derivatives at state before...')
try:
derivs = self._model.eval_state_derivatives(
states[1], precision=self._precision)
txt.append(
self._model.format_state_derivs(states[1], derivs))
except myokit.NumericalError as ee:
txt.append(ee.message)
except myokit.FindNanError as e:
txt.append(
'Unable to pinpoint source of NaN, an error occurred:')
txt.append(e.message)
raise myokit.SimulationError('\n'.join(txt))
# Return log
return log
