Comments (5)
Thank you for trying out our framework.
Currently a single filter bank cannot be larger than 2GB. Could that be a problem in your case? Could you please let me know the shape of the input data (X) and the number of sources (K)?
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This is quite likely to be true, the input data is 1275 frames, 1266720 voxels and I have set the number of sources to 1000, which I guess all together was to ambitious to try at once. Memory-wise the computer should be able to handle it though (there is 128 GB of RAM), I guess this is a tensorflow-related limit?
Does the run-time of the algorithm scale linearly with the dimensions of the tensors?
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@aboettcher : apparently this is a well known limit of tensorflow that can be circumvented by first creating a placeholder and then feeding the array during initialisation time (see https://stackoverflow.com/questions/35394103/initializing-tensorflow-variable-with-an-array-larger-than-2gb). Would that solution work for us as well?
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Given the dimensions provided by @vilim the problem should be the size of the filter banks. They are currently initialized using tensorflow.constant
with a (random) numpy array as initialization. That technique unnecessarily adds large constants to the graph. The approach pointed out by @wielandbrendel should avoid that problem. I will update the code accordingly.
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Commits 0ea7801 and 5ad43fd should fix that issue.
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