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[PLAN] Improve performance with dimension compaction and indexer #105

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sonots opened this issue Nov 12, 2018 · 0 comments
Open

[PLAN] Improve performance with dimension compaction and indexer #105

sonots opened this issue Nov 12, 2018 · 0 comments

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@sonots
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sonots commented Nov 12, 2018 •
edited

  1. Stop using ndloop and compute an operation with one CUDA kernel using indexer
  2. Compact dimension to make computation of indexer fast

Element-wise (binary ops) is already done at #64.
But, reduction and others such as store_from are not yet done.

Without this, cumo (and red-chainer) can not compete with cupy (and chainer)

Current performance comparison on k80 machine:

  • chainer mnist: 5 sec / epoch
  • red-chainer mnist: 13 sec / epoch
naitoh pushed a commit to naitoh/cumo that referenced this issue Jan 18, 2019
@masa16 @naitoh
new method: NArray#each_over_axis (sonots#105)
eda8dd7
@sonots sonots changed the title Improve performance with dimension compaction and indexer [PLAN] Improve performance with dimension compaction and indexer Mar 23, 2019
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