[Wien] segmentation fault in lapw0

[Aihua Zhang]

Dear Wien2k team,

I have compiled wien2k using pgf90 (6.1) and acml and there is no 
problem with the TiC example. But when I try to calculate my realistic 
system, it stops with segmentation fault in lapw0. Debugging the 
resulted core shows the last call is sphbes. Then I compiled lapw0 again 
by replacing -fast with the debug option, -g, and it works! I surely 
don't want work with a debug version of lapw0. Does anyone have a clue 
on the real reason and suggest me proper compiling options?

Other information is as below:
aihua at fhix:~/src/wien2k/SRC_lapw0> uname -a
Linux fhix 2.6.5-7.191-smp #1 SMP Tue Jun 28 14:58:56 UTC 2005 x86_64 
x86_64 x86_64 GNU/Linux

aihua at fhix:~/src/wien2k/SRC_lapw0> cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 37
model name      : AMD Opteron(tm) Processor 252
stepping        : 1
cpu MHz         : 2588.623
cache size      : 1024 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge 
mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext lm 
3dnowext 3dnow pni lahf_lm
bogomips        : 5111.80
TLB size        : 1088 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp

aihua at fhix:~/src/wien2k/SRC_lapw0> pgf90 -V

pgf90 6.1-1 64-bit target on x86-64 Linux
Copyright 1989-2000, The Portland Group, Inc.  All Rights Reserved.
Copyright 2000-2005, STMicroelectronics, Inc.  All Rights Reserved.

aihua at fhix:~/src/wien2k/SRC_lapw0> grep FOPT Makefile
#FOPT =  -Mfreeform -fast -Kieee
FOPT =  -Mfreeform -g -Kieee
         $(MAKE) $(S_EXEC) FORT=$(FC) FFLAGS='$(FGEN) $(FOPT)'


Thank you very much!

Best regards

Aihua