nihui

Model	Image Size	Target Size	Block Size	Total Time(sec)	GPU Memory(MB)
models-cunet	200x200	400x400	400/200/100	0.93/0.30/0.33	615/615/173
models-cunet	400x400	800x800	400/200/100	0.78/0.71/0.78	2408/615/174
models-cunet	1000x1000	2000x2000	400/200/100	3.16/3.21/3.53	2416/618/175
models-cunet	2000x2000	4000x4000	400/200/100	11.40/11.98/13.86	2420/669/193
models-cunet	4000x4000	8000x8000	400/200/100	44.33/47.15/54.76	2452/644/197
models-upconv_7_anime_style_art_rgb	200x200	400x400	400/200/100	0.16/0.16/0.15	459/459/119
models-upconv_7_anime_style_art_rgb	400x400	800x800	400/200/100	0.43/0.37/0.37	1741/460/119
models-upconv_7_anime_style_art_rgb	1000x1000	2000x2000	400/200/100	1.62/1.59/1.67	1764/462/120

Detail behind NCNN's factory pattern

NCNN adopts the factory pattern to create the layers of a nueral network. It's also the way the well-known library Caffe takes. It differs from Caffe in the implementation of the registry table. On one hand, the Caffe registry is populated in runtime as the side effect of initializion of global variable (which is a popular way for library initialization). On the other hand, the NCNN registry is determined in compile time. The registry is generated in a brilliant way using CMake instead of a hand-crafted table. NCNN's approach provides several benefits compared to Caffe's approach.

First, it's suitable for building a static library. When building a static library, the linker will strip any unused global variable to minimize the size of the library. This makes sense but it also strips the global variable which need to be inintialized to insert te layer creator into the registry. Tricky linker flags and related instrutions are required to resolve this issue. By creating

	/*!
	* Copyright (c) 2019 by Contributors
	* \file op.h
	* \brief definition of all the operators
	* \author Chuntao Hong, Xin Li
	*/

	#ifndef MXNET_CPP_OP_H_
	#define MXNET_CPP_OP_H_

-# delete local tag '12345'
-git tag -d 12345
-# delete remote tag '12345' (eg, GitHub version too)
-git push origin :refs/tags/12345
-# alternative approach
-git push --delete origin tagName
-git tag -d tagName

	-- Remove the history from
	rm -rf .git

	-- recreate the repos from the current content only
	git init
	git add .
	git commit -m "Initial commit"

	-- push to the github remote repos ensuring you overwrite history
	git remote add origin [email protected]:<YOUR ACCOUNT>/<YOUR REPOS>.git

	#!/bin/sh
	# Use socat to proxy git through an HTTP CONNECT firewall.
	# Useful if you are trying to clone git:// from inside a company.
	# Requires that the proxy allows CONNECT to port 9418.
	#
	# Save this file as gitproxy somewhere in your path (e.g., ~/bin) and then run
	# chmod +x gitproxy
	# git config --global core.gitproxy gitproxy
	#
	# More details at http://tinyurl.com/8xvpny

	$ ./benchmark/benchncnn
	thread_policy_set error 46
	loop_count = 4
	num_threads = 8
	powersave = 0
	gpu_device = -1
	cooling_down = 1
	squeezenet min = 5.64 max = 6.24 avg = 5.88
	squeezenet_int8 min = 8.93 max = 8.97 avg = 8.94
	mobilenet min = 8.86 max = 8.99 avg = 8.91