$ sysctl -n machdep.cpu.brand_stringApple M4 Max$ for i in 11 12 13 ; do MATMUL_VERSION=$i ./build/matmul  | grep 'Dispatching\|FLOPS' ; done# Without subgroupMatrix (f16) [info] Dispatching Kernel version 11: f16: 2D blocktiling with loop unrolling, vectorization and transpose, 30 iterations ...25.8 milliseconds / dispatch ~ 10640.35 GFLOPS# With subgroupMatrix (f16) [info] Dispatching Kernel version 12: f16: Subgroup matrix multiply with transpose, 30 iterations ...20.7 milliseconds / dispatch ~ 13299.45 GFLOPS# With subgroupMatrix (f32) [info] Dispatching Kernel version 13: f32: Subgroup matrix multiply with transpose (default), 30 iterations ...24.6 milliseconds / dispatch ~ 11185.63 GFLOPS