[Pytables-users] PyTables 1.1.1 and 1.2-beta1 available

[Francesc A. <fa...@ca...>]

Hi List,

Before leaving on vacancies (don't worry, we will be back in
September), the Carabos crew has made available preliminary versions
for PyTables 1.1.1 and PyTables 1.2-beta1. You can find them on:

http://www.carabos.com/downloads/pytables/preliminary/

PyTables 1.1.1 is just like 1.1, but with several optimizations
included so that the opening of files with a lot of nodes is between
1.5x and more than 2x faster.

PyTables 1.2-beta1 is a new beast wearing a complete replacement of
the classic object tree by a new object tree featuring a LRU (Least
Recent Used) cache. While keeping fully backward compatibility (you
will still be able to use the object tree as you are used to, like for
example, name completion through the use of TAB key), this will allow
to open files with large amounts of nodes more than 100x faster
(typically) than with PyTables 1.1. The new object tree with LRU cache
will typically save you more memory as well, specially for files with
lots of nodes.

Despite the fact that PyTables 1.2-beta1 passes all the tests
flawlessly on Linux platforms, it stills has some problems on Windows
and, unfortunately enough, they are not 100% reproductible (that means
that a certain test can pass in a run and can fail on the next one!).
If anybody with enough knowledge of Windows issues is willing to have
a look at that, the PyTables community will be very grateful to him.

Enjoy your summer time!

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