Advice needed: Low percentage of CPU/GPU usage when basecalling

[youyupei]

Hi @Psy-Fer and @hasindu2008 ,

Hope you are doing well. I am trying to run a simulation analysis use squigglator and buttery-eel. The simulated BLOW5 file looks good. I am basecalling them using buttery-eel, but it seems the process does not use CPUs and GPUs super efficiently.

I am not sure whether I did anything wrong but here is the command I used for the run:

buttery-eel -i out_signal.blow5 -o sim.fastq -g ont-guppy/bin \
--config dna_r9.4.1_450bps_sup_Q7.cfg
-q 10 \
--port 5558 \
--use_tcp \
--device 'cuda:0 cuda:1'   \
--num_callers 1 \
--gpu_runners_per_device 8 \
--chunks_per_runner 1000  \
--cpu_threads_per_caller 16

I have tried multiple other settings but got similar patterns of CPU and GPU usage; I am not sure this is because I have a single large blow5 file as input. May I have some advice from you about this?