Created
April 28, 2017 09:14
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Hook implementation to calculate roughly estimated computational cost of a given network for Chainer
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from __future__ import print_function | |
import sys | |
import chainer | |
from chainer.utils import conv | |
class ComputationalCostHook(chainer.function.FunctionHook): | |
name = 'ComputationalCostHook' | |
def __init__(self, sep='', end='\n', file=sys.stdout, flush=True): | |
self.sep = sep | |
self.end = end | |
self.file = file | |
self.flush = flush | |
self._print( | |
'function\tbatch_size\tin_width\tin_height\tin_channels\tout_width' | |
'\tout_height\tout_channels\t' + | |
'kernel_width\tkernel_height\tpadding\tstride\tGOPs') | |
self.total_ops = 0 | |
def _print(self, msg): | |
print(msg, sep=self.sep, end=self.end, file=self.file) | |
def _process(self, function, inputs, out_grad=None): | |
if function.label == 'Convolution2DFunction': | |
self._process_conv2d(function, inputs) | |
elif function.label == 'Deconvolution2DFunction': | |
self._process_deconv2d(function, inputs) | |
elif function.label == 'LinearFunction': | |
self._process_linear(function, inputs) | |
if self.flush: | |
self.file.flush() | |
def _process_linear(self, function, inputs): | |
x, W = inputs[:2] | |
b = inputs[2] if len(inputs) == 3 else None | |
batch_size, in_c = x.shape | |
out_c, _ = W.shape | |
ops = 2 * batch_size * in_c * out_c # twice because of multiply-and-add | |
if b is not None: | |
ops += batch_size * out_c | |
self._print('%s\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%f' % ( | |
function.label, | |
batch_size, | |
1, 1, in_c, | |
1, 1, out_c, | |
1, 1, 0, 1, ops / 1e9)) | |
self.total_ops += ops | |
def _process_conv2d(self, function, inputs): | |
x, W = inputs[:2] | |
b = inputs[2] if len(inputs) == 3 else None | |
batch_size, in_c, in_h, in_w = x.shape | |
out_c, _, kh, kw = W.shape | |
out_h = conv.get_conv_outsize(in_h, kh, function.sy, function.ph, | |
cover_all=function.cover_all) | |
out_w = conv.get_conv_outsize(in_w, kw, function.sx, function.pw, | |
cover_all=function.cover_all) | |
ops = 2 * batch_size * in_c * out_c * kw * kh * out_w * out_h # twice because of multiply-and-add | |
if b is not None: | |
ops += batch_size * out_c * out_w * out_h # bias | |
self._print('%s\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%f' % ( | |
function.label, | |
batch_size, | |
in_w, in_h, in_c, | |
out_w, out_h, out_c, | |
kw, kh, function.pw, function.sx, ops / 1e9)) | |
self.total_ops += ops | |
def _process_deconv2d(self, function, inputs): | |
x, W = inputs[:2] | |
b = inputs[2] if len(inputs) == 3 else None | |
kh, kw = W.shape[2:] | |
batch_size, in_c, in_h, in_w = x.shape | |
out_c = W.shape[1] # out_c | |
out_h = conv.get_deconv_outsize(in_h, kh, function.sy, function.ph) | |
out_w = conv.get_deconv_outsize(in_w, kw, function.sx, function.pw) | |
ops = 2 * batch_size * in_c * out_c * kw * kh * in_w * in_h # twice because of multiply-and-add | |
if b is not None: | |
ops += batch_size * out_c * out_w * out_h # bias | |
self._print('%s\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%f' % ( | |
function.label, | |
batch_size, | |
in_w, in_h, in_c, | |
out_w, out_h, out_c, | |
kw, kh, function.pw, function.sx, ops / 1e9)) | |
self.total_ops += ops | |
def forward_preprocess(self, function, in_data): | |
self._process(function, in_data) |
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