From knarf@cct.lsu.edu Mon Nov 25 12:45:01 2013
From: knarf@cct.lsu.edu
To: commits@lists.einsteintoolkit.org
Subject: [Commits] [svn:einsteintoolkit] www/about/releases/ (Rev. 1104)
Date: Mon, 25 Nov 2013 18:45:01 +0000
Message-ID: <20131125184501.7773D2C5D83@mail.einsteintoolkit.org>
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User: knarf
Date: 2013/11/25 12:45 PM

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+<?php $title=3D'Release Announcement';
+include_once($_SERVER['DOCUMENT_ROOT'].'/global/header.php');?>
+
+<p>We are pleased to announce the eigth release (code name
+"<a href=3D"http://en.wikipedia.org/wiki/Emmy_Noether">Noether</a>") of the
+Einstein Toolkit, an open, community developed software infrastructure for
+relativistic astrophysics. This release includes various improvements to the
+Cactus flesh, Carpet and GRHydro. In addition, bug fixes accumulated since t=
he
+previous release in May 2013 have been included.</p>
+
+<p>The Einstein Toolkit is a collection of software components and tools for
+simulating and analyzing general relativistic astrophysical systems that bui=
lds
+on numerous software efforts in the numerical relativity community including
+CactusEinstein, the Carpet AMR infrastructure and the relativistic
+magneto-hydrodynamics code GRHydro. The Cactus Framework is used as the unde=
rlying
+computational infrastructure providing large-scale parallelization, general
+computational components, and a model for collaborative, portable code
+development. The toolkit includes modules to build complete codes for
+simulating black hole spacetimes as well as systems governed by relativistic
+magneto-hydrodynamics.</p>
+
+<p>The Einstein Toolkit uses a distributed software model and its different
+modules are developed, distributed, and supported either by the core team of
+Einstein Toolkit Maintainers, or by individual groups. Where modules are
+provided by external groups, the Einstein Toolkit Maintainers provide quality
+control for modules for inclusion in the toolkit and help coordinate support.
+The Einstein Toolkit Maintainers currently involve postdocs and faculty from
+six different institutions, and host weekly meetings that are open for anyone
+to join in.</p>
+
+<p>Guiding principles for the design and implementation of the toolkit inclu=
de:
+open, community-driven software development; well thought out and stable
+interfaces; separation of physics software from computational science
+infrastructure; provision of complete working production code; training and
+education for a new generation of researchers.</p>
+
+<p>For more information about using or contributing to the Einstein Toolkit,=
 or to
+join the Einstein Toolkit Consortium, please visit our web pages at
+&lt;<a href=3D"http://einsteintoolkit.org">http://einsteintoolkit.org</a>&gt=
;.</p>
+
+<p>The Einstein Toolkit is primarily supported by NSF
+1212401/1212426/1212433/1212460 (Einstein Toolkit), and also by 0905046/0941=
653
+(PetaCactus) and 0710874 (LONI Grid).</p>
+
+<p>The Einstein Toolkit contains about 200 regression test cases.  On a large
+portion of the tested machines, almost all of these testsuites pass, using b=
oth
+MPI and OpenMP parallelization.</p>
+
+<h4>The changes between this and the previous release include:</h4>
+
+<p><ul><li><b>Compatibility</b></li></ul></p>
+
+<p><ul><li><b>Larger changes since last release</b></li></ul></p>
+
+<ul>
+ <li>New components:
+  <ul>
+   <li>new thorn Timers, needed by Carpet (add Carpet/Timers to your thornli=
st to avoid compilation failure)
+  </ul>
+ <li>simfactory
+  <ul>
+   <li>updates to many machines
+   <li>add support for Loewe (Frankfurt), raspberry pis, and tianhe1a
+   <li>add support for Raspberry Pi (although not officially tested and supp=
orted)
+   <li>support multi-core setup using setup-silent
+  </ul>
+ <li>Cactus flesh:
+  <ul>
+   <li>support linux-gnueabi architecture (e.g. Raspberry Pi)
+   <li>Add more checks when checking for C99 features
+   <li>add PEG grammars for parfiles
+   <li>check that providing function name is different from aliased function=
 name
+  </ul>
+ <li>IOUtil:
+  <ul>
+   <li>add option "alias" to read datasets into different variables
+   <li>abort run when user tries to change a non-steerable parameter during =
recovery
+  </ul>
+ <li>MoL: add parameter to disable MoL_PostStep in Post_Recover_Variables
+ <li>Carpet:
+  <ul>
+   <li>new options of carpet-native electric_fence mechanism to detect memor=
y problems
+   <li>new parameter max_timelevels to indicate the maximum number of timele=
vels
+   <li>Dependency on CycleClock is now optional
+   <li>add new group tag no_split_directions
+   <li>New class bboxset2, by default disabled
+  </ul>
+ <li>SystemStatistics: add information about swap usage in kb and bytes to e=
xisting mb
+ <li>GRHydro:
+  <ul>
+   <li>rewrite of some essential routines in C/C++, to allow for vectorizati=
on
+   <li>make MHD code compatible with multipatch
+   <li>introduce and use sqrt(detg) grid function
+   <li>add GRHydro_max_temp parameter to set temperature ceiling
+  </ul>
+ <li>TOVSolver:
+  <ul>
+   <li>remove dependency on GRHydro, in particular remove atmosphere handling
+   <li>remove option to use different K and Gamma for different stars
+  </ul>
+ <li>PITTNull: fix bug in computing L which affects CCE runs, relative diffe=
rences are of order 1e-4 in test runs that were verified
+ <li>Kranc:
+  <ul>
+   <li>Add unit and regression tests
+   <li>Support Mathematica 9
+   <li>Several minor bug fixes
+   <li>Support Jacobian inverse and determinant gridfunctions
+   <li>Work-in-progress for discontinuous Galerkin methods
+   <li>Improved optimisations for vectorisation
+   <li>Substantial internal code cleanup and modularisation
+  </ul>
+ <li>Multipole: various improvements, especially convergence testing
+ <li>LocalInterp: add 0th order interpolation
+ <li>TwoPunctures: implement UIUC's speed-up in "evaluation" of spectral sol=
ution
+</ul>
+
+<p><ul><li><b>How to upgrade from Gauss (ET_2013_05)</b></li></ul></p>
+
+<p>To upgrade from the previous release, use GetComponents with the new thor=
nlist to check out the new version.</p>
+
+<p>See the <a href=3D"http://einsteintoolkit.org/download/">Download</a> pag=
e on the Einstein Toolkit website for download instructions.</p>
+
+<p><ul><li><b>Remaining issues with this release</b></li></ul></p>
+
+<ul>
+ <li> Certain machines need to be configured specially in Simfactory because=
 the remote directories cannot be determined automatically just from the user=
name.  See the Machine notes below.
+* Recovering with Carpet: Carpet stores metadata (such as the simulation tim=
e) only for Carpet::max_timelevels time levels, although it is possible to al=
locate more time levels. These additional time levels then cannot be recovere=
d; the symptom is an assertion failure during recovery. The solution is to ei=
ther increase Carpet::max_timelevels, or to decrease the number of active tim=
e levels.
+ <li> Some versions of the Intel compiler (so far, all past 20121010 that we=
 have seen) produce wrong code for some valid constructs present in the toolk=
it. Disabling the 'restrict' keyword works around this issue, and is now used=
 for these compilers until they are fixed, this potentially reduces performan=
ce. This bug has been reported to Intel.
+</ul>
+
+<p><ul><li><b>Machine notes</b></li></ul></p>
+
+<p>Supported (tested) machines include:</p>
+
+<ul>
+ <li> Default Debian, Suse and Fedora installations
+ <li> Bethe
+ <li> Bluewaters
+ <li> Datura
+ <li> Kraken
+ <li> Loewe
+ <li> Lonestar
+ <li> Supermike II
+ <li> Nvidia
+ <li> Philip
+ <li> Queenbee
+ <li> Stampede
+ <li> Titan
+ <li> Trestles
+ <li> Zwicky
+</ul>
+
+<ul>
+ <li>Kraken:=20
+defs.local.ini needs to have sourcebasedir =3D $HOME configured for this mac=
hine.  You need to determine $HOME by logging in to the machine.</li>
+ <li> LoneStar and Stampede: defs.local.ini needs to have sourcebasedir =3D =
$WORK and basedir =3D $SCRATCH/simulations configured for this machine.  You =
need to determine $WORK and $SCRATCH by logging in to the machine.</li>
+</ul>
+
+<p>All repositories participating in this release carry a branch ET_2013_11
+marking this release.  These release branches will be updated if severe
+errors are found.</p>
+
+<p>The "Noether" Release Team on behalf of the Einstein Toolkit Consortium (=
2013-11-25)</p>
+
+<p>
+&nbsp;&nbsp;&nbsp;Tanja Bode<br />
+&nbsp;&nbsp;&nbsp;Peter Diener<br />
+&nbsp;&nbsp;&nbsp;Roland Haas<br />
+&nbsp;&nbsp;&nbsp;Ian Hinder<br />
+&nbsp;&nbsp;&nbsp;Frank L=C3=83=C2=B6ffler<br />
+&nbsp;&nbsp;&nbsp;Bruno Mundim<br />
+&nbsp;&nbsp;&nbsp;Christian D. Ott<br />
+&nbsp;&nbsp;&nbsp;Erik Schnetter<br />
+</p>
+
+<p>November 25, 2013</p>
+
+<?php include_once($_SERVER['DOCUMENT_ROOT'].'/global/footer.php');?>

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@@ -142,7 +142,7 @@
 marking this release.  These release branches will be updated if severe
 errors are found.
=20
-The "Noether" Release Team on behalf of the Einstein Toolkit Consortium (201=
3-11-16)
+The "Noether" Release Team on behalf of the Einstein Toolkit Consortium (201=
3-11-25)
=20
 Tanja Bode
 Peter Diener


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