Hi. We're about to start using modeller4 on various IRIX 6.5
machines. These include r5000 (O2s and Indys) and r12000 (an Octane)
processors. We are wondering whether the following could be made
available:
A. A version that will run properly on r12000 machines. These
are using a later version of the r10000 processor, with
both mips4 and 64-bit capabilities. The existing IRIX 6.5
r10000 versions will run only with a modification to the
startup scripts of the LD_LIBRARY64_PATH variable adding
/usr/lib64/mips4 to the start of that path. The reason this
is necessary is that the -r10000 flag evidently used in
compiling the r10000 versions of Modeller adds
/usr/lib64/mips4/r10000 to the path of directories searched
for libraries. This directory contains libfastm.so, which
won't run on r12000 machines (I suspect it has assembler
optimizations for r10000). Forcing rld (the runtime loader)
to look at /usr/lib64/mips4 first causes it to instead use
the more generalized mips4 version of libfastm.so. While
this modification enables the tests to run properly, it
qualifies as inconvenient and prone to bugs (especially if
dealing with other programs such as InsightII that also set
LD_LIBRARY64_PATH) and prone to bugs. A generalized mips4,
64-bit version of modeller4 should be compilable via adding:
IRIX64 ) FC=f77; FFLAGS="-automatic -L/usr/lib64/mips4 -mips4 -64 -r8 -O2 -GCM:aggressive_speculation=ON -OPT:roundoff=3"; LDFLAGS="-L/usr/lib64/mips4 -Wl,-rpath,/usr/lib64/mips4 -lfastm" ;; \
to Makefile.include1. If it will work properly, f90 might be
used instead of f77. -LNO and -IPA should enable better
performance.
B. A version that will run well on r5000 machines. These are
32-bit machines but will run mips4 code, which should
improve modeller4's performance relative to the mips3 code
which the existing IRIX n32-bit versions use. A generalized
mips4, n32-bit version of modeller4 should be compilable
via adding:
mips4 ) FC=f77; FFLAGS="-automatic -L/usr/lib32/mips4 -mips4 -n32 -r8 -O2 -GCM:aggressive_speculation=ON -OPT:roundoff=3"; LDFLAGS="-L/usr/lib32/mips4 -Wl,-rpath,/usr/lib32/mips4 -lfastm" ;; \
to Makefile.include1. Again, if it will work properly, f90
might be used instead of f77, and -LNO and -IPA should
enable better performance.
In both of the above, specialized r5000 and r12000 versions would
probably work even better. I don't know if you have either of these
types of machines available to you. We are capable of such compilation
ourselves but (obviously) don't have the modeller4 source code
available to us.
Thanks,
-Allen
--
Allen Smith easmith(a)beatrice.rutgers.edu
