GPU Performance Analysis and Optimization - GPU Technology ...
GPU Performance Analysis and Optimization - GPU Technology ...
GPU Performance Analysis and Optimization - GPU Technology ...
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Shared Memory Bank Conflicts• A bank conflict occurs when:– 2 or more threads in a warp access different words in thesame bank• Think: 2 or more threads access different “rows” in the same bank– N-way bank conflict: N threads in a warp conflict• Instruction gets issued N times: increases latency• Note there is no bank conflict if:– Several threads access the same word– Several threads access different bytes of the same word© 2012, NVIDIA87