[megatron gpt checkpoint conversion] causal mask requires pos_embed dimension #13735
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sgugger
approved these changes
Sep 26, 2021
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this is a follow up to #13508 - where I tried to fix the wrong side of the bug :(, this one hopefully is the correct one.
causal mask uses the positional emb dimensions /
seqlenand notn_emb(hidden_size) as it was originally coded and happened to work because the original meg-gpt2 model had the samen_embandseqlensize.I re-tested that the original
megatron_lm_345m/release/mp_rank_00/model_optim_rng.ptstill produces the same converted output.@sgugger, @LysandreJik