that’s basically cudnn’s internal format, you don’t need to know it under normal circumstances



 Vandana_Rajan:

For every batch, the actual (without zero padding) maximum sequence length varies. Is that permitted or will it create any issues?


no major issues, besides some extra memory heap fragmentation



 Vandana_Rajan:

From the ‘unpacked.data’ how do I recreate the new data [10, 63, new_feat_dim]? This is needed because my labels are also zero padded with size [10, 63].


“unpacked” is a tensor that is already padded. don’t use the .data attribute there.