From 26th April the default compiler on Newton will
be version 8.1. The default before this date was version
7.1.044. The version 8.1 compilers can give significant improvements
to the performance of your code. This version is currently available
on Newton via the module intel-compilers_8.1_latest.
However, there are a number of important points:
- In order to successfully run a code compiled with the old
default compiler, it will be necessary to switch the compiler module
to the old default in order to pick up the correct libraries.
This can be done with the command "module switch intel-compilers
Adding this line to your startup script after the change-over date
will restore this as your default.
- Given the increased speed codes have seen through compilation with
the version 8.1 compilers, we strongly recommend that all users migrate
to these compilers.
- For details of the naming convention.
How we manage the default compiler.
- The default compiler has been tested and is recommended by CSAR
staff. We will be striving to adopt the latest stable compiler as
soon as possible.
- There may be newer versions of the compiler available, these are
under evaluation by CSAR staff. They carry no guarantees to their
stability or permanence. When staff at CSAR think that a newer version
of the compiler should be adopted as the default users will be given
3 months notice to try this compiler and report any problems to us.
- If a user feels the present default is better for their application
they can use a module switch so they are unaffected by the default
change. Thus, we will keep this numbered module after the change to
the new default. However, this will only be done when specifically
requested by a user. After 3 months the compiler that was the old
default will have its module removed, and users will again be informed
- If your code requires a specific compiler version we recommend using
a module switch command in your start up scripts, even if this is
the current default. Thus you are unaffected by changes to the default
in the future. You then only need update your start up script when
you decide to change compiler.
- The user has the responsibility to inform the CSAR help desk that
they are using a non-default compiler, so we can maintain a record
and ensure the module remains available.