message: [NCCL]: minor fix
diff: @@ -167,9 +167,9 @@ void SGDOptimizer::nccl_update_task(
  checkCUDA(cudaStreamCreate(&stream));
  checkNCCL(ncclAllReduce(w_grad_ptr, (float*) w_grad_ptr, size, ncclFloat,
  ncclSum, handler.nccl, stream));
  -#elif
  +#else
  checkNCCL(ncclAllReduce(w_grad_ptr, (float*) w_grad_ptr, size, ncclFloat,
  - ncclSum, handler.nccl));
  + ncclSum, handler.nccl, 0));
  #endif
  // Step 2: SGD update
  @@ -344,9 +344,9 @@ void AdamOptimizer::nccl_update_task(const Task* task,
  checkCUDA(cudaStreamCreate(&stream));
  checkNCCL(ncclAllReduce(w_grad_ptr, (float*)w_grad_ptr, size, ncclFloat,
  ncclSum, handler.nccl, stream));
  -#elif
  +#else
  checkNCCL(ncclAllReduce(w_grad_ptr, (float*)w_grad_ptr, size, ncclFloat,
  - ncclSum, handler.nccl));
  + ncclSum, handler.nccl, 0));
  #endif
  //fprintf(stderr, "alpha = %.8lf alpha_t = %.8lf decay = %.8lf\n",
  // op->alpha, op->alpha_t, op->weight_decay);
  