Enable nvtx when ’nvToolsExt64_1.dll’ exists on PATH on Windows
Enable nvtx when ’nvToolsExt64_1.dll’ exists on PATH on Windows

wkentaro/chainer,delta2323/chainer,niboshi/chainer,cupy/cupy,ktnyt/chainer,jnishi/chainer,tkerola/chainer,niboshi/chainer,kashif/chainer,niboshi/chainer,ronekko/chainer,keisuke-umezawa/chainer,wkentaro/chainer,hvy/chainer,okuta/chainer,keisuke-umezawa/chainer,pfnet/chainer,wkentaro/chainer,niboshi/chainer,chainer/chainer,hvy/chainer,keisuke-umezawa/chainer,chainer/chainer,okuta/chainer,okuta/chainer,jnishi/chainer,jnishi/chainer,chainer/chainer,okuta/chainer,cupy/cupy,chainer/chainer,wkentaro/chainer,aonotas/chainer,cupy/cupy,anaruse/chainer,ktnyt/chainer,rezoo/chainer,keisuke-umezawa/chainer,ktnyt/chainer,ysekky/chainer,cupy/cupy,hvy/chainer,jnishi/chainer,hvy/chainer,ktnyt/chainer,kiyukuta/chainer