Can't reproduce the performance of warmup(60k)

[xsc1234]

Hello, I used run_train_warmup.sh to train the warmup model and found that the performance of my model can not achieve the effect of your released checkpoint (pretrained BM25 warmup checkpoint MRR@10 is 0.311), even if I train it to 300k steps (MRR@10 is 0.2979). All training hyperparameters are as described in run_train_warmup.sh, how can I handle this?