How to build a custom index (compression)?

[linjiahao962889027]

I don't know how to build a custom index.
I try to use the following command to build a compression fasta. But it always "Out ofmemory!".
centrifuge-compress.pl my.fna taxonomy/ -map seqid2taxid.map -t 32
So how to build a custom index?

[sanderdebacker]

My first thought with the "Out of memory" error, is the lack of RAM on the system running the command.
Have you tried again with a smaller "my.fna"?

[linjiahao962889027]

My first thought with the "Out of memory" error, is the lack of RAM on the system running the command. Have you tried again with a smaller "my.fna"?

Sure, I try many times. Then I split it by taxid and try again, it seems ok. But why the output have only one fasta sequence?