physical memory is 4GB
CPU is dual AMD opteron 

sonnet@vt-opteron01:~> checkmem
Total memory allocated: 3954 MegaBytes
sonnet@vt-opteron01:~> dmesg|grep Memory
Memory: 4058424k/4128704k available (2455k kernel code, 0k reserved, 942k data,
216k init)
sonnet@vt-opteron01:~> cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 37
model name      : AMD Opteron(tm) Processor 254
stepping        : 1
cpu MHz         : 2790.018
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 pni syscall nx mmxext lm 3dnowext 3dnow pni
ts
bogomips        : 5521.40
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

processor       : 1
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 37
model name      : AMD Opteron(tm) Processor 254
stepping        : 1
cpu MHz         : 2790.018
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 pni syscall nx mmxext lm 3dnowext 3dnow pni
ts
bogomips        : 5570.56
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