CODEWITHSUNDEEP
tensorflow
Dima Lituiev
Dima Lituiev

Reputation: 13116

listing available graphs in tensorflow

I am running into ValueError: Tensor("conv2d_1/kernel:0", ...) must be from the same graph as Tensor("IteratorGetNext:0", ...). I am trying to reuse a keras model with Estimator class.

I tried enclosing everything possible into

g = tf.Graph() with g.as_default():

import tensorflow as tf

g = tf.Graph()
with g.as_default():
    MODEL = get_keras_model(...)

    def model_fn(mode, features, labels, params):
        logits = MODEL(features)
        ...

    def parser(record):
        ...
    def get_dataset_inp_fn(filenames, epochs=20):
            def dataset_input_fn():
                dataset = tf.contrib.data.TFRecordDataset(filenames)
                dataset = dataset.map(parser)
                ...

with tf.Session(graph=g) as sess:
    est = tf.estimator.Estimator(
            model_fn,
            model_dir=None,
            config=None,
            params={"optimizer": "AdamOptimizer",
                    "opt_params":{}}
            )
    est.train(get_dataset_inp_fn(["mydata.tfrecords"],epochs=20))

but that is not helpful.

Is there a way to list all graphs defined up to current point?

Upvotes: 1

Views: 702

Answers (2)

Dima Lituiev
Dima Lituiev

Reputation: 13116

The function that checks the graphs and returns the error (wish they return the graph addresses as well) calls following function to check the graphs:

from tensorflow.python.framework.ops import _get_graph_from_inputs
_get_graph_from_inputs([x])

In this case the graph that keras has created is identical to graph g, but one that is created by get_dataset_inp_fn is different from g.

Upvotes: 0

Yaroslav Bulatov
Yaroslav Bulatov

Reputation: 57893

Here's a general debugging technique, put import pdb; pdb.set_trace() into tf.Graph constructor, and then use bt to figure out who is creating the Graph. My first guess would that Keras does not use the default graph and creates its own. You can do inspect.getsourcefile(tf.Graph) to find where Graph file is located locally

Upvotes: 1

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