commit | 0ee2afde610554985c4a135977f40730828e883b | [log] [tgz] |
---|---|---|
author | Zhi An Ng <zhin@google.com> | Thu Apr 07 09:29:23 2022 -0700 |
committer | XNNPACK Team <xnnpack-github-robot@google.com> | Thu Apr 07 09:31:54 2022 -0700 |
tree | bae26cf08b892102e0fe15022e6d6b678bc13aa5 | |
parent | 1d62e562e12fd8ff2623a9a30900a8a0c1d889aa [diff] |
Add weights cache for support to deconvolution operator Special case for subconvolution path, as the weights pointer is embedded in the subconvolution params. We detect if weights cache has moved, if it has, update the weights pointer in all subconvolution params. PiperOrigin-RevId: 440126698
XNNPACK is a highly optimized library of floating-point neural network inference operators for ARM, WebAssembly, and x86 platforms. XNNPACK is not intended for direct use by deep learning practitioners and researchers; instead it provides low-level performance primitives for accelerating high-level machine learning frameworks, such as TensorFlow Lite, TensorFlow.js, PyTorch, and MediaPipe.
XNNPACK implements the following neural network operators:
All operators in XNNPACK support NHWC layout, but additionally allow custom stride along the Channel dimension. Thus, operators can consume a subset of channels in the input tensor, and produce a subset of channels in the output tensor, providing a zero-cost Channel Split and Channel Concatenation operations.
The table below presents single-threaded performance of XNNPACK library on three generations of MobileNet models and three generations of Pixel phones.
Model | Pixel, ms | Pixel 2, ms | Pixel 3a, ms |
---|---|---|---|
FP32 MobileNet v1 1.0X | 82 | 86 | 88 |
FP32 MobileNet v2 1.0X | 49 | 53 | 55 |
FP32 MobileNet v3 Large | 39 | 42 | 44 |
FP32 MobileNet v3 Small | 12 | 14 | 14 |
The following table presents multi-threaded (using as many threads as there are big cores) performance of XNNPACK library on three generations of MobileNet models and three generations of Pixel phones.
Model | Pixel, ms | Pixel 2, ms | Pixel 3a, ms |
---|---|---|---|
FP32 MobileNet v1 1.0X | 43 | 27 | 46 |
FP32 MobileNet v2 1.0X | 26 | 18 | 28 |
FP32 MobileNet v3 Large | 22 | 16 | 24 |
FP32 MobileNet v3 Small | 7 | 6 | 8 |
Benchmarked on March 27, 2020 with end2end_bench --benchmark_min_time=5
on an Android/ARM64 build with Android NDK r21 (bazel build -c opt --config android_arm64 :end2end_bench
) and neural network models with randomized weights and inputs.
The table below presents multi-threaded performance of XNNPACK library on three generations of MobileNet models and three generations of Raspberry Pi boards.
Model | RPi Zero W (BCM2835), ms | RPi 2 (BCM2836), ms | RPi 3+ (BCM2837B0), ms | RPi 4 (BCM2711), ms | RPi 4 (BCM2711, ARM64), ms |
---|---|---|---|---|---|
FP32 MobileNet v1 1.0X | 3919 | 302 | 114 | 72 | 77 |
FP32 MobileNet v2 1.0X | 1987 | 191 | 79 | 41 | 46 |
FP32 MobileNet v3 Large | 1658 | 161 | 67 | 38 | 40 |
FP32 MobileNet v3 Small | 474 | 50 | 22 | 13 | 15 |
INT8 MobileNet v1 1.0X | 2589 | 128 | 46 | 29 | 24 |
INT8 MobileNet v2 1.0X | 1495 | 82 | 30 | 20 | 17 |
Benchmarked on Feb 8, 2022 with end2end-bench --benchmark_min_time=5
on a Raspbian Buster build with CMake (./scripts/build-local.sh
) and neural network models with randomized weights and inputs. INT8 inference was evaluated on per-channel quantization schema.
XNNPACK is a based on QNNPACK library. Over time its codebase diverged a lot, and XNNPACK API is no longer compatible with QNNPACK.