.. _HISTORY:
=================
Old Release Notes
=================
Theano 1.0.4 (16th of January 2019)
=====================================
This is a maintenance release of Theano, version ``1.0.4``, with no
new features, but some important bug fixes.
We recommend that everybody update to this version.
Highlights (since 1.0.3):
- Theano is now compatible with NumPy 1.16.
A total of 10 people contributed to this release since ``1.0.3``:
- wonghang
- Frederic Bastien
- Arnaud Bergeron
- Duc Nguyen
- Andrew Nelson
- Björn Linse
- Luis Mario Domenzain
- Rebecca N. Palmer
- Luciano Paz
- Dan Foreman-Mackey
Theano 1.0.3 (20th of September 2018)
=====================================
This is a maintenance release of Theano, version ``1.0.3``, with no
new features, but some important bug fixes.
We recommend that everybody update to this version.
Highlights (since 1.0.2):
- Theano is now compatible with Python 3.7
- Broadcasting for sparse dot products works correctly
- Subtensor grads do not return int anymore
A total of 5 people contributed to this release since ``1.0.2``:
- Frederic Bastien
- Arnaud Bergeron
- Dmitry Mottl
- Adrian Seyboldt
- Thomas Wiecki
Theano 1.0.2 (23rd of May, 2018)
====================================
This is a maintenance release of Theano, version ``1.0.2``, with no
new features, but some important bug fixes.
We recommend that everybody update to this version.
Highlights (since 1.0.1):
- Theano should work under PyPy now (this is experimental).
- Update for cuDNN 7.1 RNN API changes.
- Fix for a crash related to mixed dtypes with cuDNN convolutions.
- MAGMA should work in more cases without manual config.
- Handle reductions with non-default accumulator dtype better on the GPU.
- Improvements to the test suite so that it fails less often due to
random chance.
A total of 6 people contributed to this release since ``1.0.1``:
- Frederic Bastien
- Steven Bocco
- Jon Haygood
- Arnaud Bergeron
- Jordan Melendez
- Desiree Vogt-Lee
- Garming Sam
- Pascal Lamblin
- Vincent Dumoulin
- Glexin
- Simon Lefrancois
Theano 1.0.1 (6th of December, 2017)
====================================
This is a maintenance release of Theano, version ``1.0.1``, with no
new features, but some important bug fixes.
We recommend that everybody update to this version.
Highlights (since 1.0.0):
- Fixed compilation and improved float16 support for topK on GPU
- **NB**: topK support on GPU is experimental and may not work for
large input sizes on certain GPUs
- Fixed cuDNN reductions when axes to reduce have size ``1``
- Attempted to prevent re-initialization of the GPU in a child process
- Fixed support for temporary paths with spaces in Theano initialization
- Spell check pass on the documentation
A total of 6 people contributed to this release since ``1.0.0``:
- Frederic Bastien
- Steven Bocco
- Arnaud Bergeron
- Sam Johnson
- Edward Betts
- Simon Lefrancois
Theano 1.0.0 (15th of November, 2017)
=====================================
This is a final release of Theano, version ``1.0.0``, with a lot of
new features, interface changes, improvements and bug fixes.
We recommend that everybody update to this version.
Highlights (since 0.9.0):
- Announcing that `MILA will stop developing Theano <https://groups.google.com/d/msg/theano-users/7Poq8BZutbY/rNCIfvAEAwAJ>`_
- conda packages now available and updated in our own conda channel ``mila-udem``
To install it: ``conda install -c mila-udem theano pygpu``
- Support NumPy ``1.13``
- Support pygpu ``0.7``
- Moved Python ``3.*`` minimum supported version from ``3.3`` to ``3.4``
- Added conda recipe
- Replaced deprecated package ``nose-parameterized`` with up-to-date package ``parameterized`` for Theano requirements
- Theano now internally uses ``sha256`` instead of ``md5`` to work on systems that forbid ``md5`` for security reason
- Removed old GPU backend ``theano.sandbox.cuda``. New backend ``theano.gpuarray`` is now the official GPU backend
- Make sure MKL uses GNU OpenMP
- **NB**: Matrix dot product (``gemm``) with ``mkl`` from conda
could return wrong results in some cases. We have reported the problem upstream
and we have a work around that raises an error with information about how to fix it.
- Improved elemwise operations
- Speed-up elemwise ops based on SciPy
- Fixed memory leaks related to elemwise ops on GPU
- Scan improvements
- Speed up Theano scan compilation and gradient computation
- Added meaningful message when missing inputs to scan
- Speed up graph toposort algorithm
- Faster C compilation by massively using a new interface for op params
- Faster optimization step, with new optional destroy handler
- Documentation updated and more complete
- Added documentation for RNNBlock
- Updated ``conv`` documentation
- Support more debuggers for ``PdbBreakpoint``
- Many bug fixes, crash fixes and warning improvements
A total of 71 people contributed to this release since 0.9.0, see list below.
Interface changes:
- Merged duplicated diagonal functions into two ops: ``ExtractDiag`` (extract a diagonal to a vector),
and ``AllocDiag`` (set a vector as a diagonal of an empty array)
- Removed op ``ExtractDiag`` from ``theano.tensor.nlinalg``, now only in ``theano.tensor.basic``
- Generalized ``AllocDiag`` for any non-scalar input
- Added new parameter ``target`` for MRG functions
- Renamed ``MultinomialWOReplacementFromUniform`` to ``ChoiceFromUniform``
- Changed ``grad()`` method to ``L_op()`` in ops that need the outputs to compute gradient
- Removed or deprecated Theano flags:
- ``cublas.lib``
- ``cuda.enabled``
- ``enable_initial_driver_test``
- ``gpuarray.sync``
- ``home``
- ``lib.cnmem``
- ``nvcc.*`` flags
- ``pycuda.init``
Convolution updates:
- Implemented separable convolutions for 2D and 3D
- Implemented grouped convolutions for 2D and 3D
- Added dilated causal convolutions for 2D
- Added unshared convolutions
- Implemented fractional bilinear upsampling
- Removed old ``conv3d`` interface
- Deprecated old ``conv2d`` interface
GPU:
- Added a meta-optimizer to select the fastest GPU implementations for convolutions
- Prevent GPU initialization when not required
- Added disk caching option for kernels
- Added method ``my_theano_function.sync_shared()`` to help synchronize GPU Theano functions
- Added useful stats for GPU in profile mode
- Added Cholesky op based on ``cusolver`` backend
- Added GPU ops based on `magma library <http://icl.cs.utk.edu/magma/software/>`_:
SVD, matrix inverse, QR, cholesky and eigh
- Added ``GpuCublasTriangularSolve``
- Added atomic addition and exchange for ``long long`` values in ``GpuAdvancedIncSubtensor1_dev20``
- Support log gamma function for all non-complex types
- Support GPU SoftMax in both OpenCL and CUDA
- Support offset parameter ``k`` for ``GpuEye``
- ``CrossentropyCategorical1Hot`` and its gradient are now lifted to GPU
- cuDNN:
- Official support for ``v6.*`` and ``v7.*``
- Added spatial transformation operation based on cuDNN
- Updated and improved caching system for runtime-chosen cuDNN convolution algorithms
- Support cuDNN v7 tensor core operations for convolutions with runtime timed algorithms
- Better support and loading on Windows and Mac
- Support cuDNN v6 dilated convolutions
- Support cuDNN v6 reductions for contiguous inputs
- Optimized ``SUM(x^2)``, ``SUM(ABS(X))`` and ``MAX(ABS(X))`` operations with cuDNN reductions
- Added new Theano flags ``cuda.include_path``, ``dnn.base_path`` and ``dnn.bin_path``
to help configure Theano when CUDA and cuDNN can not be found automatically
- Extended Theano flag ``dnn.enabled`` with new option ``no_check`` to help speed up cuDNN importation
- Disallowed ``float16`` precision for convolution gradients
- Fixed memory alignment detection
- Added profiling
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