Description
The NAg Fortran 95 compiler. A very correct compiler, useful for software
development.
Source
The compiler can be downloaded from http://www.nag.co.uk/nagware/NP/NP_trial.asp#download.
Availability
All workstations and servers
Licence details
This is commercial licence-managed software. We have a network licence for
it under the University's site deal with NAG, which expires in July 2010.
The licence server must be available and the licence free in order for you
to compile, but you do not need the licence to run the resulting binaries.
To make portable binaries it is recommended to use the
-unsharedf95 option to link the compiler's libraries statically
whilst linking system libraries dynamically.
Instructions for users
The compiler program is called f95, and it is usually available as a module sometimes loaded by default. We have several different version available; see the modules documentation for more detail. The module's name is 'nag' because 'f95' is too generic.
To use the network licence
you must set LM_LICENSE_FILE to
28518@por.ch.private.cam.ac.uk in your environment for version
5.0, or NAG_KUSARI_FILE to por.ch.cam.ac.uk: for version
5.1. This should
be done automatically on workstations so there's no need to set it by hand. Note the American spelling of LM_LICENSE_FILE.
Documentation
There is a manpage. NAG provide an online FAQ at http://www.nag.co.uk/nagware/NP/doc/faq.asp. Release notes are in $PREFIX/lib/NAGWare/doc. HTML versions of the man pages and the release notes are in $PREFIX/lib/NAGWare/html. $PREFIX is the base location of the compiler you're using. To find it, do which f95 and take off the bin/f95 bit at the end.
Admin notes
f95 calls a C compiler to produce the actual binary. You can specify a
different compiler binary with -Wc. With the 5.1 release of the
compiler you can persuade the 32-bit version to work on a 64-bit Linux by
passing -Wc,-m32 -Wl,-m32 to call the compiler and linker in
32-bit mode. This doesn't seem to be needed on version 5.0. The options
are probably best added to the f95 driver script.
There's a bug on the 64-bit 5.0 compiler which means that it can't use the
FlexLM licence server. This only affects users of the clust and mek-quake
clusters. See /info/new on those clusters for the fix.
The FlexLM licence manager starts issuing warnings to users about three months before the licence
expires, which is too early. You can set an environment variable to suppress the warnings,
which is documented in the FAQ.
This compiler comes with a very good installer. I only keep one version
installed because unlike Intel and Portland the only updates we get tend
to be bugfix updates. You can find out the minor version of the compiler
with f95 -V. All of the install packages are in
/usr/local/packages on the NFS server, in case we need to back
off.
To have the compiler automatically pass appropriate -rpath options to gcc based on LIBRARY_PATH you
need to edit the driver script to look something like this:
/usr/local/shared/nag/f95/5.1-218/lib/NAGWare/f95 -Qpath \
/usr/local/shared/nag/f95/5.1-218/lib/NAGWare \
${LIBRARY_PATH:+-Wl,-Wl,,-rpath -Wl,-Wl,,$LIBRARY_PATH} "$@"
Ancient history, but Debian 3.0 workstations need the "Redhat 7.2" version of the compiler, SuSE 9.2
workstations need the "Redhat 9" version.
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