Analytical Chemistry 2.1 Initial Release: Summer 2016 In addition to minor editing to improve readability, to fix typographical errors not caught prior to the release of Analytical Chemistry 2.0, and to respond to suggestions from users, the following changes are included in this edition. Release 3.2.1 implements the suggestions by Cambridge Flow Solutions to the CMake scripts and adds routines to set the MPI communicator for parallel I/O. There are also numerous updates and fixes to the test cases, tools and CGNStools utilities. Great programmers have actually used the version numbering system as local jokes. Examples (Wikipedia): Since version 3, TeX has used an idiosyncratic version numbering system, where updates have been indicated by adding an extra digit at the end of the decimal, so that the version number asymptotically approaches π. Features that help bring ideas to life. Google Web Designer gives you the power to create beautiful, engaging HTML5 content. Use animation and interactive elements to bring your creative vision to life, and enjoy seamless integration with other Google products, like Google Drive, Display & Video 360, and Google Ads.
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- Intended use for CGNS
We also strongly recommend that you join the DiscussionGroup. This forum is the primary method used to keep CGNS userscurrent with release and other important information updates.It is also used for discussing important problems/issues and for obtaining help fromother CGNS users.
What to Download
As a minimum, you will need to download and compile the CGNS library code.Compilation requires an ANSI compliant C compiler.The source code maydownloaded (from SourceForge) as a gzipped, tar file:- Current Stable Release:CGNS Version 3.2.1 (cgnslib_3.2.1.tar.gz)
This Version 3.2 release provides fullintegration of parallel I/O using HDF5 with MPI. It also implementsthe Hierarchy of families (CPEX 0033),Multiple families (CPEX 0034), and Cubic elements (CPEX 0036).Compression (rewriting) of modified CGNS files is no longerautomatically done, since this may interfere with parallel I/O. Thismay be reenabled within an application with the cg_set_compressfunction, or done later through the CGNSview GUI or with thecgnscompress program in the tools subdirectory.Conversion programs to and from AFLR3, FAST, and TetGen have alsobeen added to CGNStools.Release 3.2.1 implements the suggestions by Cambridge Flow Solutionsto the CMake scripts and adds routines to set the MPI communicatorfor parallel I/O. There are also numerous updates and fixes to the testcases, tools and CGNStools utilities.Note: CGNStools is no longer built automatically, you need to setthe configure flag, --enable-cgnstools if using configure. - Previous Stable Releases:
CGNS Version 3.1.4, Release 2 (cgnslib_3.1.4-2.tar.gz)
Second release of Version 3.1.4 software. Includes 64-bit integer capabilityand updated Tools for viewing and editing CGNS files.HDF5 is now the default file type,when CGNS is built with HDF5 version 1.8 or later.(CGNS can always read or write both HDF5 and ADFfile types.) - CGNS Version 2.5-5 (cgnslib_2.5-5.tar.gz)
Prior Version 2.x stable-release version. (This release fixes a long standing issue of memory leakage in the CGNS librarywhen closing a file or deleting a node. It also removes the internal storageof element data when reading and writing, and uses the user supplied bufferinstead. In the case of partial reads and writes however, the element data iscurrently reloaded into memory to do the operations.)
Also available from the SourceForge CGNS Files Download page:
- F77_examples - Fortran CGNS examples.
- UserGuideCode 3.1.2 - examples from the CGNSUser Guide.
- Windows compiled html file (chm) documentation is available forVersion 3.2,Version 3.1, andVersion 2.5.of the CGNS library.
- Working SVN directoriesof development files, included source and documentation.(Note: older CVS repository is no longer being used.)
Other CGNS related software and older versions of the library are also available.(NOTE: if building CGNS with an HDF5 version earlier than 1.8, then links will not workwhen using HDF5 file type.)
Note about Compilers
Users should be aware that many new features in CGNS require the use of up-to-datecompilers. For example, older FORTRAN compilers that are not FORTRAN 2003 compliant (such as g77) will notwork for many CGNS features, and are not recommended or supported.
Note to Users of Version 2.5 CGNS
Current users of Version 2.5 should read the following short guide:
- Quick Guide to Upgrading from CGNS v2.5 to v3.x
which describes some of the reasons for upgrading to the latest version 3 software as well as how tohandle portability issues between versions.
Known Bugs/Issues in Latest Official Release
Version 2.1 Suggestions For Kids
- In the file /cgns/trunk/src/cgnslib_f.h.in, the comment lines on the first 28 lines should bechanged from 'c' to '!'. This has been fixed in the SVN version of the code.
- In the file /cgns/trunk/src/cgnslib.h, the macro I could conflict with the I in complex.h (if used).This has been fixed in the SVN version of the code by redefining I to Ii.
- Parallel cgp_open can show major slowdown when many processors are employed. This issue is being worked.