[kernel] added half2 specialization for layernorm kernel#139

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dongxianzhe wants to merge 5 commits intovectorch-ai:mainfrom

dongxianzhe:op/layernorm_kernel

Commits on Apr 27, 2024

[op] optimize layernorm kernel for half2 type
Xianzhe Dong
committed
[ut] add layernorm kernel unitest
Xianzhe Dong
committed
use gtest library rewrite layernorm kernel unitest
Xianzhe Dong
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added layernorm kernel half2 unit test using gtest library
Xianzhe Dong
committed

Commits on Apr 28, 2024

[refactor] use torch::tensor to allocate memory in layernorm kernel unitest and just test llm::kernel::layer_norm
Xianzhe Dong
committed