Questions about memory usage

Hi there, thanks for your great work!

Recently, I found that in .yaml, the `directly_add_no_mem_embed` and 'use_mask_input_as_output_without_sam' were both set to True which is not consist with the paper, why is this? and is the memory work if both of them set to True?

Also, I found that there is an error if I set the `directly_add_no_mem_embed=False`. The error came from these two:

```
to_cat_memory = [self.no_mem_embed.expand(1, B, self.mem_dim)]
to_cat_memory_pos_embed = [self.no_mem_pos_enc.expand(1, B, self.mem_dim)]
```

Saying the inconsistency dimention of `no_mem_embed` and `1, B, self.mem_dim`. More specifically, 256 vs 64. How could I solve this?

Best,
Yixuan