And the full trace:
Traceback (most recent call last):
File
"/Users/peter/projects/spiking-experiments/scratch/pure_theano_dynamic_scan.py",
line 34, in <module>
ys2 = f2(xs)
File
"/Users/peter/projects/spiking-experiments/venv/lib/python2.7/site-packages/theano/compile/function_module.py",
line 871, in __call__
storage_map=getattr(self.fn, 'storage_map', None))
File
"/Users/peter/projects/spiking-experiments/venv/lib/python2.7/site-packages/theano/gof/link.py",
line 314, in raise_with_op
reraise(exc_type, exc_value, exc_trace)
File
"/Users/peter/projects/spiking-experiments/venv/lib/python2.7/site-packages/theano/compile/function_module.py",
line 859, in __call__
outputs = self.fn()
File
"/Users/peter/projects/spiking-experiments/venv/lib/python2.7/site-packages/theano/scan_module/scan_op.py",
line 951, in rval
r = p(n, [x[0] for x in i], o)
File
"/Users/peter/projects/spiking-experiments/venv/lib/python2.7/site-packages/theano/scan_module/scan_op.py",
line 940, in <lambda>
self, node)
File "theano/scan_module/scan_perform.pyx", line 505, in
theano.scan_module.scan_perform.perform
(/Users/peter/.theano/compiledir_Darwin-16.0.0-x86_64-i386-64bit-i386-2.7.10-64/scan_perform/mod.cpp:5551)
ValueError: could not broadcast input array from shape (10) into shape (0)
Apply node that caused the error: for{cpu,scan_fn}(Subtensor{int64}.0,
Subtensor{:int64:}.0, IncSubtensor{Set;:int64:}.0, Subtensor{int64}.0)
Toposort index: 15
Inputs types: [TensorType(int64, scalar), TensorType(float64, matrix),
TensorType(float64, matrix), TensorType(int64, scalar)]
Inputs shapes: [(), (20, 10), (21, 0), ()]
Inputs strides: [(), (80, 8), (8, 8), ()]
Inputs values: [array(20), 'not shown', array([], shape=(21, 0),
dtype=float64), array(20)]
Outputs clients: [[Subtensor{int64::}(for{cpu,scan_fn}.0, Constant{1})],
['output']]
Backtrace when the node is created(use Theano flag traceback.limit=N to
make it longer):
File
"/Users/peter/projects/spiking-experiments/scratch/pure_theano_dynamic_scan.py",
line 32, in <module>
out2, updates2 = int_and_fire_batch(inp2)
File
"/Users/peter/projects/spiking-experiments/scratch/pure_theano_dynamic_scan.py",
line 28, in int_and_fire_batch
out, updates = theano.scan(int_and_fire, sequences=[xs])
HINT: Use the Theano flag 'exception_verbosity=high' for a debugprint and
storage map footprint of this apply node.
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