Fix layer norm backward release3.4 v2

[zhengshengning]

PR Category

Operator Mechanism

PR Types

Bug fixes

Description

devPR:#78794

revert 掉 revert的代码，并加上修改GammaBetaBackwardCUDAKernelTemplate的修改。

根因：GammaBetaBackwardCUDAKernelTemplate 使用 block_dim_x=32, block_dim_y=32 =1024线程/block。在Blackwell (SM 100)架构上，编译器为每个线程生成了更多的寄存器，导致 1024 线程 × 寄存器数/线程 超出了SM的寄存器文件容量。Kernel完全没有执行（"too many resources requested for launch"），输出buffer保留了未初始化的脏数据（Inf/NaN）。H卡(Hopper SM 90)上同样的kernel没有问题，因为寄存器使用量更低。

修复：给GammaBetaBackwardCUDAKernelTemplate加上__launch_bounds__(block_dim_x* block_dim_y)

是否引起精度变化

否

[paddle-bot]

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 90.00000% with 6 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (release/3.4@2675023). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...addle/fluid/ir_adaptor/translator/op_translator.cc	87.09%	4 Missing ⚠️
.../core/distributed/auto_parallel/inferspmd_utils.cc	77.77%	2 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff               @@
##             release/3.4   #78792   +/-   ##
==============================================
  Coverage               ?   90.00%           
==============================================
  Files                  ?        6           
  Lines                  ?       60           
  Branches               ?        0           
==============================================
  Hits                   ?       54           
  Misses                 ?        6           
  Partials               ?        0           

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[sneaxiy]

LGTM