7 Replies Latest reply on May 16, 2017 1:22 PM by Intel Corporation

    Have I been sold fake Westmeres?


      I did upgrade the L5630 Westmeres in my home server with - allegedly - X5672 Westmeres. While these seem to work ok, when compiling some applications specifically for the Westmere target architecture, it turned out the X5672 do not have/know AES and PCLMULDQ instructions.


      Both cat /proc/cpuinfo as well as cpuid say so:


      processor       : 15 vendor_id       : GenuineIntel cpu family      : 6 model           : 44 model name      : Intel(R) Xeon(R) CPU           X5672  @ 3.20GHz stepping        : 2 microcode       : 0x14 cpu MHz         : 3199.850 cache size      : 12288 KB physical id     : 1 siblings        : 8 core id         : 10 cpu cores       : 4 apicid          : 53 initial apicid  : 53 fpu             : yes fpu_exception   : yes cpuid level     : 11 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 syscall nx pdpe1gb rdtscp lm con stant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 popcn t lahf_lm epb tpr_shadow vnmi flexpriority ept vpid dtherm ida arat bugs            : bogomips        : 6399.82 clflush size    : 64 cache_alignment : 64 address sizes   : 40 bits physical, 48 bits virtual power management:


            PCLMULDQ instruction                    = false


             AES instruction                         = false



      (I am terribly sorry about the mess. New here and this editor doesn't accept copy&paste, ignores html-pre tags etc.)



      Intel ARK Intel® Xeon® Processor X5672 (12M Cache, 3.20 GHz, 6.40 GT/s Intel® QPI) Product Specifications

      says AES should be present, GCC docs say so, Wikipedia says so...


      So how do I get a definitive answer? Thanks for your insight.