Multi-GPU support in embeddings.py

[staszekdh]

python embeddings.py start data_set_fullseq.fasta data_set_fullseq -embedder pt --gpu -bs 0

When run as above, everything works fine. However, if I use the -nproc 2 flag, the computations are much faster, but the resulting database file contains embeddings for only half of the input sequences.

[Argusmocny]

-nproc will only work correctly when asdir or h5py option is specified, this should be validated before actual run

[jludwiczak]

I've stumbled upon this too - there are also 2 overlapping progress bars shown as I recall.
Additionally there's a typo in README that I've followed at that time: https://github.com/labstructbioinf/pLM-BLAST/blob/main/README.md?plain=1#L64

[staszekdh]

Yes, the progress bars looked weird (one was updating during the calculations and the other was stuck at 20%).