cudamemcpyAsync(dev_b0, host_b + i, N*sizeof(int),cudaMemcpyHostToDevice, stream0); cudamemcpyAsync(dev_b1, host_b + i + N, N*sizeof(int),cudaMemcpyHostToDevice, stream1); kernel<<<N/256,256,0,stream0>>>(dev_a0, dev_b0,dev_c0); kernel<<<N/256,256,0,stream1>>>(dev_a1...