i have an athlon 64 X2 4400+, running suse 9.3 (2.6.11.4-20a-smp). MB is VIA K8T890-9.

it seems to know that it is dual-core, but i can't tell if it's actually treating it as 2 processors. maya renders are not any faster than with the non-smp kernel, and my VR apps (sgi's OpenGL Performer Perfly) report only 1 available cpu. from /proc/cpuinfo, i see that it reports a dual-core correctly, and that there are 2 siblings ... is this the correct output, or should i be seeing a listing for processor 0 and processor 1?

--skullmunky

cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 35
model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4400+
stepping : 2
cpu MHz : 1005.040
cache size : 1024 KB
physical id : 255
siblings : 2
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 pni syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm
bogomips : 1980.97
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
cpu cores : 2

What does top say.

I suggest any distribution but SUSE. Try using the latest stable kernel from kernel.org

in top, last cpu field is always 0; "I" or "1" says "sorry, only one cpu detected."

thanks for the help ... hopefully i can get this working w/o changing distros

Try the latest stable vanilla kernel version from kernel.org.

(conclusion)

in case anyone else has a similar problem & stumbles on this:

that motherboard doesn't support dual-core. oops.

Get a Sempron and update the BIOS.