Version 0.8.2 released
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Gaëtan de Menten
Oct 2, 2014, 11:07:48 AM10/2/14
to liam2-a...@googlegroups.com
I am pleased to announce that version 0.8.2 of LIAM2 is now
available.
The highlights of this release are:
- allow loading globals from csv files directly in the simulation, instead of having them in the input HDF file.
- decreased memory usage for models with many periods.
More details and the complete list of changes are available at the end of this message.
The only changes since the RC have been in the release script.
This new release can be downloaded on our website:
http://liam2.plan.be/pages/download.html
As always, *any* feedback is very welcome, preferably on the liam2-users
mailing list: liam2...@googlegroups.com (you need to register to be
able to post).
New features
------------
* allow loading globals from csv files directly, instead of having them in the
input HDF file. One can mix both approaches (have some globals in the input
HDF file while other globals in .csv files). This makes it more practical in
case you have a relatively stable input dataset for entities, but need to
change the globals often, or have several variants with different globals.
See the :ref:`globals_declaration` section for details. This closes
:issue:`30`.
* added a new simulation option category: logging. This is the new home for
the existing timings option, and for a new level option, which allows
to sets the verbosity of logging to one of `periods`, `procedures` (this is
the default) or `processes` (which corresponds to the behavior in
earlier versions).
Miscellaneous improvements
--------------------------
* decreased memory usage for models with many periods. It used to keep the
index of individuals of past periods forever in memory, which had
approximately the same effect than adding one column for each period.
Since it is only useful when going back in time more than one period, it now
flushes it to disk for periods < period - 1. This change has two consequences:
it will decrease memory use for models with many periods but will slow down
models going back in time more than one period. This closes :issue:`130`.
* the top times at the end of the simulation now also include the % of total.
* after each period, a very rough estimate of the remaining time for the
simulation is displayed (closes :issue:`127` in combination with the
logging/level option).
* updated all dependencies provided in the bundle.
* improved the release script.
Fixes
-----
* Using links or other non-simple variables in the score expression of the
matching() function was a lot slower and memory-hungry than necessary
because some system temporary variables kept accumulating. It is still a
lot slower than it should though, see :issue:`128`.
The highlights of this release are:
- allow loading globals from csv files directly in the simulation, instead of having them in the input HDF file.
- decreased memory usage for models with many periods.
More details and the complete list of changes are available at the end of this message.
The only changes since the RC have been in the release script.
This new release can be downloaded on our website:
http://liam2.plan.be/pages/download.html
As always, *any* feedback is very welcome, preferably on the liam2-users
mailing list: liam2...@googlegroups.com (you need to register to be
able to post).
New features
------------
* allow loading globals from csv files directly, instead of having them in the
input HDF file. One can mix both approaches (have some globals in the input
HDF file while other globals in .csv files). This makes it more practical in
case you have a relatively stable input dataset for entities, but need to
change the globals often, or have several variants with different globals.
See the :ref:`globals_declaration` section for details. This closes
:issue:`30`.
* added a new simulation option category: logging. This is the new home for
the existing timings option, and for a new level option, which allows
to sets the verbosity of logging to one of `periods`, `procedures` (this is
the default) or `processes` (which corresponds to the behavior in
earlier versions).
Miscellaneous improvements
--------------------------
* decreased memory usage for models with many periods. It used to keep the
index of individuals of past periods forever in memory, which had
approximately the same effect than adding one column for each period.
Since it is only useful when going back in time more than one period, it now
flushes it to disk for periods < period - 1. This change has two consequences:
it will decrease memory use for models with many periods but will slow down
models going back in time more than one period. This closes :issue:`130`.
* the top times at the end of the simulation now also include the % of total.
* after each period, a very rough estimate of the remaining time for the
simulation is displayed (closes :issue:`127` in combination with the
logging/level option).
* updated all dependencies provided in the bundle.
* improved the release script.
Fixes
-----
* Using links or other non-simple variables in the score expression of the
matching() function was a lot slower and memory-hungry than necessary
because some system temporary variables kept accumulating. It is still a
lot slower than it should though, see :issue:`128`.
-- Gaëtan de Menten Federal Planning Bureau Economic Analyses & Forecasts Avenue des Arts, 47-49 | 1000 Brussels tel. +32 (0)2 507 7459 fax +32 (0)2 507 7373 email : g...@plan.be | www.plan.be
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