pengfei added a comment. I have the same impression. I checked ISE <https://cdrdv2.intel.com/v1/dl/getContent/671368> says AMX instructions are `N.E.` on 32-bit mode. And seems Linux Kernel only enables AMX on 64-bit too https://lwn.net/ml/linux-kernel/20210730145957.7927-22-chang.seok....@intel.com/#t
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