MNIST demo with lmdb (addresses issues 922 and 958)#1008
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mohomran
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Update examples/mnist/lenet_train_test.prototxt for the lmdb source too.
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Thanks for resolving the consolidated LeNet issue, fixing the MNIST db script bug, and the error message polish. p.s. Good to see your first PR -- hope to see you at ECCV! |
…nist.sh), switched around includes
…ed in convert_mnist_data.cpp to lmdb
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Rebased, squashed and added the requested change. (It seems Travis CI had problems retrieving some packages. That particular commit only changes a bash script and a network definition.) P.S. Yup, I'll be there, looking forward to seeing you! |
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For the record, this issue with leveldb is not exclusive to OSX (#522 (comment)), I had the same problem on Debian (wheezy). |
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convert MNIST demo to lmdb, fixes
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convert MNIST demo to lmdb, fixes
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convert MNIST demo to lmdb, fixes
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The MNIST demo now supports both lmdb (default) and leveldb. The choice of backend can be set in create_mnist.sh as a command line parameter for convert_mnist_data.bin.
Writing examples individually to the lmdb backend is literally 100x slower than using batches, so now convert_mnist_data.cpp resembles convert_imageset.cpp a lot more closely in that batch writes are used for leveldb and lmdb.
./examples/mnist/train_lenet_consolidated.sh runs to completion. The final accuracy is 99.79% and 99.2% on the training and test sets respectively.
Commit 750f92e among other things removes a bug that is currently in the tip of the dev branch.