Dear list, I recently bought a fairly new Samsung N150 Plus netbook off a friend. Dumped the windows crippleware 'Starter' OS, and installed Ubuntu 64-bit 11.04 which works very nicely/speedily.
Rather curiously the GUI system monitor shows it as having 4 CPUs (?) This appears to be confirmed by the CLI output (at the bottom of the msg for clarity-sake). I believe the processor is a dual core Atom N550 http://ark.intel.com/Product.aspx?id=50154 Two questions: A) Why does it show as 4 processors? Are these all real? Have I somehow 'unlocked' another couple *hopes*? B) If it's just 4 threads, can I optimally run 4 separate instances of a 32-bit program one each on each thread/core without losing overall efficiency? (The program I have in mind is a bit technical/obscure, and no, it doesn't have a 64-bit version) Rather curious... Ross $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 28 model name : Intel(R) Atom(TM) CPU N550 @ 1.50GHz stepping : 10 cpu MHz : 1000.000 cache size : 512 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm dts bogomips : 2992.53 clflush size : 64 cache_alignment : 64 address sizes : 32 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 28 model name : Intel(R) Atom(TM) CPU N550 @ 1.50GHz stepping : 10 cpu MHz : 1500.000 cache size : 512 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 apicid : 2 initial apicid : 2 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm dts bogomips : 2992.56 clflush size : 64 cache_alignment : 64 address sizes : 32 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 28 model name : Intel(R) Atom(TM) CPU N550 @ 1.50GHz stepping : 10 cpu MHz : 1500.000 cache size : 512 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm dts bogomips : 2992.52 clflush size : 64 cache_alignment : 64 address sizes : 32 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 28 model name : Intel(R) Atom(TM) CPU N550 @ 1.50GHz stepping : 10 cpu MHz : 1000.000 cache size : 512 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 apicid : 3 initial apicid : 3 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm dts bogomips : 2992.54 clflush size : 64 cache_alignment : 64 address sizes : 32 bits physical, 48 bits virtual power management:
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