Add CHAINERX_NVCC_GENERATE_CODE=arch=compute_50,code=sm_50
Add CHAINERX_NVCC_GENERATE_CODE=arch=compute_50,code=sm_50

wkentaro/chainer,pfnet/chainer,niboshi/chainer,jnishi/chainer,chainer/chainer,ktnyt/chainer,okuta/chainer,keisuke-umezawa/chainer,tkerola/chainer,hvy/chainer,wkentaro/chainer,niboshi/chainer,jnishi/chainer,wkentaro/chainer,ktnyt/chainer,chainer/chainer,keisuke-umezawa/chainer,jnishi/chainer,okuta/chainer,jnishi/chainer,ktnyt/chainer,hvy/chainer,niboshi/chainer,hvy/chainer,chainer/chainer,wkentaro/chainer,hvy/chainer,niboshi/chainer,keisuke-umezawa/chainer,ktnyt/chainer,chainer/chainer,keisuke-umezawa/chainer,okuta/chainer,okuta/chainer