Commit a47d1fbb authored by Kirill Smelkov's avatar Kirill Smelkov

readme: Merge in wiki content

Upon @jp request.
parent c687102c
......@@ -63,15 +63,55 @@ several nodes in a cluster.
Please see `demo/demo_zbigarray.py`__ for a complete example.
Additional Info
---------------
__ demo/demo_zbigarray.py
Current state and Roadmap
=========================
Wendelin.core works in real life for workloads Nexedi_ is using in production,
including 24/7 projects. We are, however, aware of the following
limitations and things that need to be improved:
- wendelin.core is currently not very fast
- there are big - proportional to input in size - temporary array allocations
in third-party libraries (NumPy_, `scikit-learn`_, ...) which might practically
prevent processing out-of-core arrays depending on the functionality used.
Thus
- we are currently working on improved wendelin.core design and implementation,
which will use kernel virtual memory manager (instead of one implemented__ in__
userspace__) with arrays backend presented to kernel via FUSE as virtual
filesystem implemented in Go.
__ https://lab.nexedi.com/nexedi/wendelin.core/blob/master/include/wendelin/bigfile/virtmem.h
__ https://lab.nexedi.com/nexedi/wendelin.core/blob/master/bigfile/virtmem.c
__ https://lab.nexedi.com/nexedi/wendelin.core/blob/master/bigfile/pagefault.c
In parallel we will also:
- try wendelin.core 1.0 on large data sets
- identify and incrementally fix big-temporaries allocation issues in NumPy and
scikit-learn
We are open to community help with the above.
Additional materials
====================
- Wendelin.core tutorial__
- Slides__ (pdf__) from presentation about wendelin.core in PyData Paris 2015
__ https://www.nexedi.com/wendelin-Core.Tutorial.2016
__ http://www.wendelin.io/NXD-Wendelin.Core.Non.Secret/asEntireHTML
__ http://www.wendelin.io/NXD-Wendelin.Core.Non.Secret?format=pdf
Please see `wiki`__ for more info: current state, roadmap, additional materials, ...
.. _NumPy: http://www.numpy.org/
.. _scikit-learn: http://scikit-learn.org/
.. _numpy.memmap: http://docs.scipy.org/doc/numpy/reference/generated/numpy.memmap.html
.. _NEO: http://www.neoppod.org/
.. _ZEO: https://pypi.python.org/pypi/ZEO
__ demo/demo_zbigarray.py
__ https://lab.nexedi.com/nexedi/wendelin.core/wikis/home
.. _Nexedi: https://www.nexedi.com/
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