When you test /proc/cpuinfo, look for the "lm" cpu flag. This is the flag (long mode) that tells you the CPU is actually a 64-bit CPU. Here is the output on both Intel and AMD processors. [gaf@boslc03 test]$ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 6 model name : Genuine Intel(R) CPU 3.40GHz stepping : 8 cpu MHz : 3391.732 cache size : 16384 KB physical id : 2 siblings : 2 core id : 4 cpu cores : 2 fpu : yes fpu_exception : yes cpuid level : 6 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 syscall nx lm pni monitor ds_cpl est tm2 cid cx16 xtpr lahf_lm bogomips : 6793.14 clflush size : 64 cache_alignment : 128 address sizes : 40 bits physical, 48 bits virtual power management: [gaf@gaf ~]$ cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 16 model : 2 model name : Quad-Core AMD Opteron(tm) Processor 2352 stepping : 3 cpu MHz : 2100.000 cache size : 512 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu tsc msr pae mce cx8 apic mtrr mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow constant_tsc pni monitor cx16 lahf_lm cmp_legacy svm cr8_legacy bogomips : 5256.54 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm stc [6] [7] [8] -- Jerry Feldman <Jerry.Feldman@xxxxxxxxxxxxxxxx> Algorithmics (US), Inc Suite 2-400 275 Grove St. Newton, MA 02466 617-663-5220 617-663-5391 (fax) > -----Original Message----- > From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list- > bounces@xxxxxxxxxx] On Behalf Of Vivek Mangal > Sent: Wednesday, August 06, 2008 12:32 AM > To: Red Hat > Subject: cpu architecture > > Hello All, > I was configuring VMWare on Fedora 8 x86_64 > but when i create a virtual machine then it gives me a error that your cpu > is not a x86_64 arch. > i tried to check it in /proc/cpuinfo file > but nothing found > can any one tell me how i check my processor arch or cpu arch. > > -- > With Regards, > Vivek Mangal > Project Assistant > IC Design Group > CEERI, Pilani > Call +91-9829681753 > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list -------------------------------------------------------------------------- This email and any files transmitted with it are confidential and proprietary to Algorithmics Incorporated and its affiliates ("Algorithmics"). If received in error, use is prohibited. Please destroy, and notify sender. Sender does not waive confidentiality or privilege. Internet communications cannot be guaranteed to be timely, secure, error or virus-free. Algorithmics does not accept liability for any errors or omissions. Any commitment intended to bind Algorithmics must be reduced to writing and signed by an authorized signatory. -------------------------------------------------------------------------- -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list