How to Build Memory-Efficient Transformers with xFormers Using Packed Sequences, GQA, ALiBi, SwiGLU, and Causal Attention
In this tutorial, we implement xFormers: a sensible toolkit for constructing quick, memory-efficient Transformer fashions on GPUs. We start by validating memory-efficient consideration towards an ordinary consideration implementation, then examine their pace and reminiscence consumption throughout totally different sequence lengths. We then look at causal masking, packed variable-length sequences, grouped-query consideration, and customized ALiBi positional…
