[cherry pick]修复save/load相关的两个bug #30543
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* Avoid bug on 'MAC python3.5/6'. * Choose the saving method according to the OS. * smaller length of '_unpack_saved_dict' for MAC OS. * add version information of Python. * Edit comment.
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chenwhql
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Jan 19, 2021
lanxianghit
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hbwx24
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PR types
Bug fixes
PR changes
APIs
Describe
cherry-pick两个PR
PR1：
一、
test_paddle_save_load, test_static_save_load单测随机挂，如下图：
原因：mac os python3.5/6 pickle.dump 当存储对象大于4GB时有bug。
二、使用numpy.array_equal替代两个array做差的比较形式。
原始PR：#30485
PR2：
补充修复paddle.save/static.save无法存储超4G大参数的PR( #29988 )，为
load_program_state和set_program_state添加解析超大参数的代码，使其兼容修改。原始PR：#30507