EMT 64bit OS

Question

Hi, I have a Dell 2850 with Intel Xeon processor. My understanding from the /proc/cpuinfo is that this system supports 64bit OS. We have redhat linux running on it since 6 months and just came to know from Dell that it's not supposed to run 64bit linux. After talking to couple of Dell engineers, what I hear now is that 'you can load an EMT64 bit Operating System but you can not load a IA64 bit os. This system is not a true 64 bit system and not all Programs designed for 64 bit will work' How can I figure out if the redhat versioin I have running is EMT 64bit OS or not? This is the output of uname -a and cat /proc/cpuinfo # uname -a Linux rstn-lin01 2.4.21-27.EL #1 SMP Wed Dec 1 21:53:39 EST 2004 x86_64 x86_64 x86_64 GNU/Linux # cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Xeon(TM) CPU 3.00GHz physical id : 0 siblings : 2 runqueue : 0 stepping : 1 cpu MHz : 2992.590 cache size : 1024 KB 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 tm ferr syscall nx lm sse3 monitor ds-cpl cnxt-id bogomips : 5976.88 clflush size : 64 address sizes : 36 bits physical, 48 bits virtual power management: Thanks a lot! HA1

christopherv · Answer

Well it looks like you are running a 64bit OS.

This output from the uname -a shows you that.
"x86_64 x86_64 x86_64 GNU/Linux"

(if it wasn't 64bit, it would show just x86 i believe)

As far as if your CPU's are 64bit check out this url:
http://www.intel.com/products/processor/xeon/index.htm

See if you can find the model number of your CPU. (it should have it on your Dell packing slip when you recieved the server)

According to this doc (if i'm reading it right)
http://www.dell.com/downloads/global/shared/dual_core_dell_os.pdf

Only Dell poweredge 6800's and 6850's come with the 64bit Xeons.

Hope this helps!

Linux General

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