Polyhedron PB05/PPC problems

[IainS]

A "heads up" on some problems with ppc (at least on G5).
Apologies that the info is not more detailed, but time is very  
limited right now.

I've being trying to run Polyhedron PB05 on two platforms and running  
into these errors (PPC).
(The i386 code built from the same tree passes all these tests)

gcc version 4.4.0 20080617 (experimental) (GCC)

Configured with: /Volumes/UFSScratch/GCC/gcc-4-4-trunk/configure -- 
prefix=/usr --build=powerpc-apple-darwin8 --enable-languages=c,c+ 
+,objc,obj-c++,fortran --with-slibdir='/usr/lib' --with-gmp=/ 
Developer/SDKs/MacOSX10.4us.sdk/usr/local/gmp-4-2-2 --with-mpfr=/ 
Developer/SDKs/MacOSX10.4us.sdk/usr/local/mpfr-2-3-1 --enable-threads  
--disable-nls --enable-version-specific-runtime-libs --mandir='/usr/ 
share/man' --infodir='/usr/share/info' --program-suffix=-4.4.0 -- 
enable-checking=release --enable-serial-configure --host=powerpc- 
apple-darwin8 --target=powerpc-apple-darwin8 --enable-werror --enable- 
bootstrap

=====

gas_dynam:

O0
	OK

O2
	OK

O3
 > Value=0.86723800000E-06 Target=0.86774900000E-06  
Tolerance=0.10000000000E-10
gas_dyn FAILED    1 fails and    0 passes

-ffast-math -funroll-loops -ftree-loop-linear -ftree-vectorize -O3
	OK


========
linpk

O0
	OK

O2
 > Value= 26.254094400     Target= 23.100000000     Tolerance=  
2.0000000000
linpk FAILED    1 fails and    4 passes

O3
 > Value= 26.254094400     Target= 23.100000000     Tolerance=  
2.0000000000
linpk FAILED    1 fails and    4 passes

-ffast-math -funroll-loops -ftree-loop-linear -ftree-vectorize -O3
 > Value= 26.254094400     Target= 23.100000000     Tolerance=  
2.0000000000
linpk FAILED    1 fails and    4 passes


========
capacita

O0
	OK

O2
	OK

O3
	OK

-ffast-math -funroll-loops -ftree-loop-linear -ftree-vectorize -O3
	OK

  -mcpu=970 -mtune=970
	produced code that didn't complete (after >8 hours)   :- 
(     [ compare with 241 secs compiled -O0]

sampler says that the code is spending
100% __solve_cap_MOD_gcstab
	98%  __solve_cap_MOD_mv_prod
		55% __solve_cap_MOD_prod1
		44% __solve_cap_MOD_preco
  		 <1%  __solv_cap_MOD_mv_prod
		  <1%   _gfortrani_reshape_packed
	  2%  __solve_cap_MOD_gcstab


----
Iain