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gradient operations and cachong

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This commit is contained in:
Max Zwiessele 2014-02-21 10:38:11 +00:00
parent 0c92fca31a
commit b19f9b9f33
8 changed files with 151 additions and 138 deletions
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8
GPy/util/caching.py
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@ -12,7 +12,7 @@ class Cacher(object):
def __call__(self, *args):
if self._reset_on_first:
assert isinstance(args[0], Observable)
args[0].add_observer(self.reset)
args[0].add_observer(self, self.reset)
cached_args = args
else:
cached_args = args[1:]
@ -29,21 +29,21 @@ class Cacher(object):
else:
if len(self.cached_inputs) == self.limit:
args_ = self.cached_inputs.pop(0)
[a.remove_observer(self.on_cache_changed) for a in args_]
[a.remove_observer(self, self.on_cache_changed) for a in args_]
self.inputs_changed.pop(0)
self.cached_outputs.pop(0)
self.cached_inputs.append(cached_args)
self.cached_outputs.append(self.operation(*args))
self.inputs_changed.append(False)
[a.add_observer(self.on_cache_changed) for a in args]
[a.add_observer(self, self.on_cache_changed) for a in args]
return self.cached_outputs[-1]
def on_cache_changed(self, arg):
self.inputs_changed = [any([a is arg for a in args]) or old_ic for args, old_ic in zip(self.cached_inputs, self.inputs_changed)]
def reset(self, obj):
[[a.remove_observer(self.reset) for a in args] for args in self.cached_inputs]
[[a.remove_observer(self, self.reset) for a in args] for args in self.cached_inputs]
self.cached_inputs = []
self.cached_outputs = []
self.inputs_changed = []