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Update ReadMe.md
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QINZHAOYU authored Nov 24, 2021
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共享内存在物理上被分为32个同样宽度(开普勒架构为 8 字节,其他为 4 字节)、能被同时访问的列向内存bank。

======================================
bank0 bank1 ... bank31
======================================
layer1 layer1 ... layer1
layer2 layer2 ... layer2
...
layer32 layer32 ... layer32
++++++++++++++++++++++++++++++++++++++
bank0 bank1 ... bank31
++++++++++++++++++++++++++++++++++++++
layer1 layer1 ... layer1
layer2 layer2 ... layer2
...
layer32 layer32 ... layer32


只要同一个线程束内的多个线程不同时访问同一个 bank 中不同层的数据,该线程束对共享内存的访问就只需要
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