Daa2rma is running very slowly

User Questions
1

Hi,
I’m running the following command of daa2rma on .daa files that are about 24 GB in size each:

time daa2rma --in SRR6957156_SA_1.daa SRR6957156_SA_2.daa --out
SRR6957156_reads.rma --paired true --pairedSuffixLength 1 --mapDB ~databases/megan-map-Feb2022-ue.db --threads 24 --only KEGG

My .rma file is being populated at about 100KB/s which is much slower than maximum writing speed for my SSD (~3000 MB/s). My RAM however is being used to the max (128 GB).

Does that kind of speed sound reasonable for my RAM? Is there anything I can do to speed up the process other than purchase more RAM?

2

Unfortunately, daa2rma was not designed for the size of files used these days. Please do not use daa2rma but rather use daa-meganizer, which is much faster. This program attaches classifications to the end of the daa file and can be opened in MEGAN.

3

Okay, I tried daa-meganizer but I received two separate files - one for each of my paired end files. Did I do it right? is there a way to merge them together? thanks!