rust-ncnn

ncnn Rust API.

Prequisition

Rust Env

$ curl --proto '=https' --tlsv1.2 https://sh.rustup.rs -sSf | sh

CMake >= 3.12

Rust cmake needs --parallel option thus CMake3.12 is complusory

$ pip install cmake --upgrade --user

Clang >= 3.9

Rust bindgen use clang to generate bindings.rs with c_api.h.

$ sudo apt install clang-3.9   libclang-3.9-dev

Build

build with libncnn.so by default.

$ cd rust-ncnn/
$ cargo run --example get_version

build with prebuild ncnn

$ export NCNN_DIR="/path/to/your/ncnn/lib"

build with libncnn.a (not recommand because of libomp link error)

$ export CARGO_FEATURE_STATIC=""
$ cargo build --example get_version

Run Examples and UnitTest

$ cargo test
$ cargo run --example get_version
$ cargo run --example benchmark --release
...
squeezenet.param 		 20 ms
squeezenet_int8.param 		 98 ms
mobilenet.param 		 35 ms
mobilenet_int8.param 		 112 ms
mobilenet_v2.param 		 25 ms
mobilenet_v3.param 		 20 ms
shufflenet.param 		 20 ms
shufflenet_v2.param 		 17 ms
mnasnet.param 		 23 ms
proxylessnasnet.param 		 26 ms
efficientnet_b0.param 		 37 ms
regnety_400m.param 		 27 ms
blazeface.param 		 6 ms
googlenet.param 		 85 ms
googlenet_int8.param 		 267 ms
resnet18.param 		 87 ms
resnet18_int8.param 		 349 ms
alexnet.param 		 114 ms
vgg16.param 		 277 ms
vgg16_int8.param 		 2029 ms
resnet50.param 		 141 ms
resnet50_int8.param 		 533 ms
squeezenet_ssd.param 		 149 ms
squeezenet_ssd_int8.param 		 252 ms
mobilenet_ssd.param 		 69 ms
mobilenet_ssd_int8.param 		 210 ms
mobilenet_yolo.param 		 160 ms
mobilenetv2_yolov3.param 		 73 ms
yolov4-tiny.param 		 103 ms

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Comments

A couple of questions
Hi, thanks for a great crate!

I have a few questions:

What is the reason for using ncnn fork instead of original repository? They seem the same except for an old version.

Would it make sense to make static build the default one? It seems like that is the usual use-case. Setting env variable for all projects seems redudant.
opened by chemicstry 4
Fix safety bugs
This fixes a couple of safety bugs:

Set proper mutability for various methods

Add lifetime to Extractor, otherwise Net can be dropped while Extractor is still in use

Consume Extractor within extract method as Extractor can only be used once
opened by chemicstry 1