

显存优化    

算子融合   

图优化   

算子替换     

# arch  
  
```
src
    core
        kernel
        layer
        model
        utils
    
    parser
    
    optimizer
    
    builder

test
    cpp
    trt
    onnx     
```

## parser   


## optimizer   


## builder  


## profiler   
* qps   
* flops   
* memory    


https://github.com/Tencent/ncnn/blob/master/tools/ncnnoptimize.cpp#L53-L88    
