【Hackathon 9th No.98】[Feature Enhancement] Add Xla Backend for test_compile #248
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lixinqi
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Sep 5, 2025
JewelRoam
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Oct 29, 2025
…ompile (PaddlePaddle#248) * add xla * fix bug
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PR Category
Feature Enhancement
Description
为 graph_net.torch.test_compiler支持后端使用Xla编译器
需要配置 --compiler "xla"，同时需要设置环境变量PJRT_DEVICE来指定cuda或者cpu（不设置的话自动检测，优先使用cuda)
测试版本 torch_xla - 2.7 (CUDA 12.6 + Python 3.11)whl包，torch_xla 的版本和torch的版本是一一对应的(CUDA版本也是需要对应的，官方编译的现在大部分都是CPU的)，在最新版本的xla中，已经移除了对CUDA的支持，只支持TPU，CPU后端
对模型中创建张量时硬编码的设备处理上，使用抽象语法树来替代字符串提取替换，同时新增device参数
对于xla编译器，需要把所有张量都创建在xla设备上，xla仅支持转化到cpu上
对比速度的时候，前向运行在cuda上，编译过的模型运行在xla(实际设备为cuda)上