Starting from v.3.8.0, the installers for Windows and MacOS are
built using the Qt Installer Framework. To avoid problems with user
access rights in Windows10, the default install targets into the user
folder (C:\Users\<you>\GEMS3); the user's modelling projects are
now located also in the user folder (C:\Users\<you>\Library\Gems3\projects).
default locations of the program (/Users/<you>/GEMS3/Gems3.app)
and the users projects (/Users/<you>/Library/Gems3/projects/)
should be chosen similar to those in Windows10. Such location for
user's projects (in Library/GEMS3/projects) is safe to persist even
after the GEM-Selektor code will be upgraded or completely removed using
(on MacOS: /Users/<you>/GEMS3/maintenancetool.app).
Temporarily, we provide an installer for Linux (should work on ubuntu
18.04 or similar and up) which has to be extracted into user home
directory (or into a folder in user home directory) and just launched
using the exec_gems.sh script.
Work is in progress on creating a single online installer for
all parts of GEM Software (also example projects, third-party databases,
etc.) This on-line installer will
automatically download, install and update the GEM-Selektor code, and
optionally its Resources (with DB.default), example projects, GEMS3K
examples, and GEMSFITS codes. A link "Get GEM Software" at the landing
page of this web site will be activated in due time soon.
Attention! To install GEMS on MacOS, click on the downloaded "Gems3.9.x-yyyyyyy.zzzzzzz-qt6-macos-x86-64.dmg" file. In case of problems with opening this file not downloaded from the AppStore, in a small window that appears, control-right-click on the app icon and select "Open" (repeat "right-click" and "Open", if needed) to allow the system to open the application in a bypass to standard security settings (this should be done once), then follow the guidance in the GEMS installer along with the Installation instructions (pdf).
Attention! When starting the downloaded installer in Windows 10, depending on your security settings, you may need to bypass Windows Defender messages. This is normal and reflects increasingly strict security policies of Microsoft and Apple that only trust programs from app stores certified by these companies. For GEMS development team, it is getting more and more difficult to comply with these requirements due to shortage of manpower. Hence, we count on your trust and patience.
Attention! There were relevant improvements and functionality additions in GEM-Selektor version 3.7 compared to previous versions. There is a lot of improved functionality in GEM-Selektor v.3.3 or higher compared with v.3.2. For backward compatibility, all modelling projects created in GEM-Selektor v.3.2.x or earlier, will open and work normally in GEM-Selektor v.3.3.x; accordingly, GEMS3K I/O files exported from GEM-Selektor v.3.2.x are readable and will work in coupled codes and examples using GEMS3K v.3.3.x.
Immediate extension of old modeling projects
in GEM-Selektor v.3.3.x with newly created Phase records, remaking
existing Phase records, or via Project remake/extension wizard is
possible. Before doing that, the user needs only once to open the
project; switch to Database Mode; open the Phase window; and remake
one-by-one all Phase records available in the project (saving each
record back after remake).
Note that if some Phase records remain in the
"old" format (i.e. not remade) then this will lead to errors or crashes
during calculations of equilibria in systems from this project. So, it
is essential that ALL Phase records go once through the Phase remake
wizard! Even opening and closing a modeling project once in the
GEM-Selektor v.3.3.x will render this project unusable in earlier
versions of GEM-Selektor (3.2.x or less).
For these reasons, if you have used
GEM-Selektor v.3.2.x or earlier, we recommend not to upgrade it, but to
install GEM-Selektor v.3.3.x to a new location in your PC, check it, and
then copy your old modelling projects into the work project directory of
the new version (usually like \MyGEMS33\Library\Gems3\projects).
To install GEMS
v.3.8.0 from the traditional offline installer dmg file (as for
v.3.7.0), please click
this download link. Previously released GEM-Selektor
v.3.7.0 packages can be downloaded using the links below.
If, in Windows or Linux, you have a previously installed GEM-Selektor
package older than rev. 2370.830, then we recommend installing the current
package to a different location and copy your modeling projects over.
There are two reasons: (i) some files in /Resources/DB.default have been
renamed in preparation of an updated PSI-Nagra thermodynamic database;
(ii) the Project record format has been extended, so a newly created or
expanded project will not be readable by earlier revisions of
GEM-Selektor. In Mac OS X, first back up your project directory
(/users/<home>/Library/Gems3/projects); then move Gems3.app from
/Applications to trash, and put a new one from dmg to /Applications.
Past release of GEM-Selektor v.3.2 packages
can be downloaded using the links below.
After downloading the installation file, you can get back to GEMS3
For users of GEM-Selektor v.2 (or earlier release candidates of GEMS3):