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53 lines
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ReStructuredText
53 lines
2.3 KiB
ReStructuredText
===================
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What's New in 0.4.1
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===================
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-------------------
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System Requirements
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-------------------
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There are no special requirements for running the OpenMC code. As of this
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release, OpenMC has been tested on a variety of Linux distributions as well as
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Mac OS X. However, it has not been tested yet on any releases of Microsoft
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Windows. Memory requirements will vary depending on the size of the problem at
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hand (mostly on the number of nuclides in the problem).
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------------
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New Features
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------------
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- A batching method has been implemented so that statistics can be calculated
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based on multiple generations instead of a single generation. This can help to
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overcome problems with underpredicted variance in problems where there is
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correlation between successive fission source iterations.
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- Users now have the option to select a non-unionized energy grid for problems
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with many nuclides where the use of a unionized grid is not feasible.
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- Improved plotting capability (Nick Horelik). The plotting input is now in
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``plots.xml`` instead of ``plot.xml``.
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- Added multiple estimators for k-effective and added a global tally for
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leakage.
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- Moved cross section-related output into cross_sections.out.
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- Improved timing capabilities.
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- Can now use more than 2**31 - 1 particles per generation.
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- Improved fission bank synchronization method. This also necessitated changing
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the source bank to be of type Bank rather than of type Particle.
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- Added HDF5 output (not complete yet).
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- Major changes to tally implementation.
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---------
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Bug Fixes
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---------
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- `b206a8`_: Fixed subtle error in the sampling of energy distributions.
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- `800742`_: Fixed error in sampling of angle and rotating angles.
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- `a07c08`_: Fixed bug in linear-linear interpolation during sampling energy.
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- `a75283`_: Fixed energy and energyout tally filters to support many bins.
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- `95cfac`_: Fixed error in cell neighbor searches.
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- `83a803`_: Fixed bug related to probability tables.
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.. _b206a8: https://github.com/openmc-dev/openmc/commit/b206a8
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.. _800742: https://github.com/openmc-dev/openmc/commit/800742
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.. _a07c08: https://github.com/openmc-dev/openmc/commit/a07c08
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.. _a75283: https://github.com/openmc-dev/openmc/commit/a75283
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.. _95cfac: https://github.com/openmc-dev/openmc/commit/95cfac
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.. _83a803: https://github.com/openmc-dev/openmc/commit/83a803
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