AMBER Archive (2008)


From: Atro Tossavainen (
Date: Mon Dec 15 2008 - 08:40:41 CST

> Okay, this is curious, as the long identifier names have been there for a
> very long time, and have not caused anything other than a warning. So are
> we perhaps changing the compiler settings,

None of the flags look out of place to me (or would seem to affect
what kind of identifiers you can use).

> or is this just a compiler I have not seen?

It's the most recent release, 7.4.4, which is not very recent.

> As of last release, I stopped checking out sgi mips because I had
> between limited and no access to relevant machines (I still have one sgi
> mips 02, pretty old now, unbelievably slow, with old compilers on it).

Of course they are pretty old and mostly unbelievably slow.

The configuration files of AMBER 10, including PMEMD, still suggest it
should be possible to compile the programs on SGI MIPS and Sun SPARC
machines. Hence I am giving it a go on both, since I have access to
both (and to the most recent compilers for each) and reporting any
problems I come across here. If you would prefer that I didn't,
maybe issue a patch that eliminates these configuration options and
make a statement to the effect of THESE ARE NO LONGER SUPPORTED on
the mailing list? :-)

> Anyway, I would expect there is a switch that can be added to this compiler
> that will allow more than 31 chars - geez that is a really old standard.

I've just been through all 1548 lines of the f90 manpage on IRIX.
There isn't one that I can see.

> Regarding identifier name lengths, well, I more often encounter folks
> complaining because something is too cryptic. I tend to make the name
> something that will at least have meaning to me, on the theory that that is
> a practical middle ground between grumpy compilers and grumpy people ;-)

I agree with the point itself, but unfortunately the SGI MIPSpro
compiler disagrees with us both.

Atro Tossavainen (Mr.)               / The Institute of Biotechnology at
Systems Analyst, Techno-Amish &     / the University of Helsinki, Finland,
+358-9-19158939  UNIX Dinosaur     / employs me, but my opinions are my own.
< URL : http : / / www . helsinki . fi / %7E atossava / > NO FILE ATTACHMENTS
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