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This CL formats all of frameworks/ml/nn/* with the following commands:
$ $CLANG_DIR/clang-format --style=file -i `find $NNAPI_DIR -name "*.cpp"`
$ $CLANG_DIR/clang-format --style=file -i `find $NNAPI_DIR -name "*.h"`
where:
* "NNAPI_DIR" is "$ANDROID_BUILD_TOP/frameworks/ml/nn"
* "CLANG_DIR" is "$ANDROID_BUILD_TOP/prebuilts/clang/host/linux-x86/clang-stable/bin"
Bug: N/A
Test: mma
Change-Id: Idddbc7ecaeab76fb0bbee4250830333752a1f29b
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With 1ms blocktime the benchmark app shows 3x performance degradation on
Pixel 2 in float benchmarks (against no blocktime setting).
In testing, 10ms was enough to give results comparable to no setting.
20ms was chosen as to have a 2x margin of safety while not keeping the
threads busywaiting unnecessarily long.
Bug: 109645291
Test: NeuralNetworksTest_static/*Openmp*
Test: Run benchmark app multiple times
Change-Id: Id2a909f6aefdbe29dd746019c2c9541e31d8c754
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Accept 0 as the initial blocktime value. On-device kmp_get_blocktime
returns 0 instead of 200 about 10% of time.
Bug: 79908763
Test: NeuralNetworksTest_static
Change-Id: I03e2e95175c6342ff1e85436fd7ce6b03d440bda
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Reduce the time OpenMP threads used by Eigen busywait for new work after
completing a piece. This is 200ms by default, which meant that we tried
to continuously run 8 threads for 200ms after completing operations
using Eigen - starving both our other work and the rest of the system.
Bug: 79159165
Test: mm
Test: cherry-picked to systrace branch and look at traces
Test: NeuralNetworksTest_static
Change-Id: I3f21aea6d96c785dd7c47493a739b76876420f7d
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