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Optimize Add, Multiply and Average layers
#293
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caisq
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Aug 20, 2018
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Reviewable status: 0 of 1 approvals obtained (waiting on @caisq)
caisq
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Aug 20, 2018
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Profiling a real model revealed that
Add,MultiplyandAveragelayers were allocating a zero/ones tensor for the initial value, on the cpu. This causes unnecessary uploads to the gpu and one extra shader call.This PR removes that initial value and treats the first tensor in the list as the initial value.
PERF
This change is