- sliced M=2 and full M=5 lm_head projections may pick different GEMM kernels whose accumulation order differs in the last float32 bits, so torch.equal flakes by machine and thread count
- sliced M=2 and full M=5 lm_head projections may pick different GEMM kernels whose accumulation order differs in the last float32 bits, so torch.equal flakes by machine and thread count