amd64 or i368

[paulie-m]

I am runing lubuntu 12.10 on a pc with a Pentium D, which i think is 64 bit but when i try to install AMD64 versions of software I sometimes get a message saying wrong architecture,and the i386 verson works. Am I misundersdtanding the difference between the 2. Are AMD64 versions purely for AMD processors? Any help would be most welcome.Thanks.Paul.

[QIII]

AMD64 is a convention based on what is more or less a historical accident: AMD was the first to bring a 64 bit processor to the consumer market. You will often hear it referred to as x86_64 these days.

The Pentium D should be a 64 bit CPU -- two cores -- but that may not necessarily be true depending on how early it was.

Post back the results of

uname -r

and we can tell for sure if you are running the 64 bit version.

[haqking]

I am runing lubuntu 12.10 on a pc with a Pentium D, which i think is 64 bit but when i try to install AMD64 versions of software I sometimes get a message saying wrong architecture,and the i386 verson works. Am I misundersdtanding the difference between the 2. Are AMD64 versions purely for AMD processors? Any help would be most welcome.Thanks.Paul.

post the response to the following which you type in terminal:

uname -m

[paulie-m]

it says i686. does this mean AMD64 architecture?

[haqking]

it says i686. does this mean AMD64 architecture?

you are running a 32 bit OS thats why x64 dont work. if it was 64 bit it would say something like x86_64

Peace

[paulie-m]

Sorry to be a pest but could you clarify just 1 more thing? You say i am running 32bit os. does that mean my processor is 32bit or could a install a 64bit os if,for instance i had >4GB memory and wanted to acess it? thanks.

[haqking]

Sorry to be a pest but could you clarify just 1 more thing? You say i am running 32bit os. does that mean my processor is 32bit or could a install a 64bit os if,for instance i had >4GB memory and wanted to acess it? thanks.

Pentium D is a 64 bit processor, but you installed a 32 bit version of Ubuntu which is the default download.

You dont need 4Gb to use 64 bit either, but you need 64 bit to use 4GB or a PAE kernel.

If you have 1 Gb you can still use a 64 bit OS but you wont get much benefit.

You will need to reinstall if you want x64, there is no upgrade path.

[paulie-m]

Cool. Thanks very much for help. I understand now. Cheers, Paul.

[QIII]

Post the results of

cat /proc/cpuinfo

[paulie-m]

paul@paul-ESPRIMO-P:~$ cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 4
model name      : Intel(R) Pentium(R) D CPU 2.80GHz
stepping        : 7
microcode       : 0x3
cpu MHz         : 2793.106
cache size      : 1024 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 5
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pebs bts pni dtes64 monitor ds_cpl cid cx16 xtpr lahf_lm
bogomips        : 5586.21
clflush size    : 64
cache_alignment : 128
address sizes   : 36 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 15
model           : 4
model name      : Intel(R) Pentium(R) D CPU 2.80GHz
stepping        : 7
microcode       : 0x3
cpu MHz         : 2793.106
cache size      : 1024 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
apicid          : 1
initial apicid  : 1
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 5
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pebs bts pni dtes64 monitor ds_cpl cid cx16 xtpr lahf_lm
bogomips        : 5586.21
clflush size    : 64
cache_alignment : 128
address sizes   : 36 bits physical, 48 bits virtual
power management:

This is what it says.