Biowulf High Performance Computing at the NIH
prokka on Biowulf

Prokka is a pipeline for rapidly annotating prokaryotic genomes. It produces GFF3, GBK and SQN files that are ready for editing in Sequin and ultimately submitted to Genbank/DDJB/ENA.


Important Notes

Interactive job
Interactive jobs should be used for debugging, graphics, or applications that cannot be run as batch jobs.

Allocate an interactive session and run the program. Sample session:

[user@biowulf]$ sinteractive --mem=2g --cpus-per-task=4
salloc.exe: Pending job allocation 46116226
salloc.exe: job 46116226 queued and waiting for resources
salloc.exe: job 46116226 has been allocated resources
salloc.exe: Granted job allocation 46116226
salloc.exe: Waiting for resource configuration
salloc.exe: Nodes cn3144 are ready for job

[user@cn3144 ~]$
node$ module load prokka
node$ prokka --listdb
[16:11:09] Looking for databases in: /opt/anaconda/bin/../db
[16:11:09] * Kingdoms: Archaea Bacteria Mitochondria Viruses
[16:11:09] * Genera: Enterococcus Staphylococcus
[16:11:09] * HMMs: HAMAP
[16:11:09] * CMs: Bacteria Viruses
node$ cp /usr/local/apps/prokka/TEST_DATA/GCA_000021185.1_ASM2118v1_genomic.fna .
node$ prokka --cpus 4 --force \
    --kingdom Bacteria \
    --outdir prokka_GCA_000021185 \
    --genus Listeria \
    --locustag GCA_000021185 GCA_000021185.1_ASM2118v1_genomic.fna

[user@cn3144 ~]$ exit
salloc.exe: Relinquishing job allocation 46116226
[user@biowulf ~]$

Batch job
Most jobs should be run as batch jobs.

Create a batch input file (e.g., which uses the input file ''. For example:

#! /bin/bash

function die {
    echo "$@" >&2
    exit 1

module load prokka/1.13 || die "Could not load prokka module"
cp /usr/local/apps/prokka/TEST_DATA/GCA_000021185.1_ASM2118v1_genomic.fna . \
    || die "Could not find test data"

prokka --cpus ${SLURM_CPUS_PER_TASK} --force \
    --kingdom Bacteria \
    --outdir prokka_GCA_000021185 \
    --genus Listeria \
    --locustag GCA_000021185 GCA_000021185.1_ASM2118v1_genomic.fna

Submit this job using the Slurm sbatch command.

sbatch --cpus-per-task=6 --mem=3g --time=10

This should create the following output directory:

|-- GCA_000021185_10252016.err
|-- GCA_000021185_10252016.faa
|-- GCA_000021185_10252016.ffn
|-- GCA_000021185_10252016.fna
|-- GCA_000021185_10252016.fsa
|-- GCA_000021185_10252016.gbk
|-- GCA_000021185_10252016.gff
|-- GCA_000021185_10252016.log
|-- GCA_000021185_10252016.sqn
|-- GCA_000021185_10252016.tbl
`-- GCA_000021185_10252016.txt
Swarm of Jobs
A swarm of jobs is an easy way to submit a set of independent commands requiring identical resources.

Copy the example data

biowulf$ cp -r /usr/local/apps/prokka/TEST_DATA .

Create a swarmfile (e.g. prokka.swarm). For example:

prokka --cpus ${SLURM_CPUS_PER_TASK} --force --kingdom Bacteria --outdir prokka_GCA_000008285 \
    --genus Listeria --locustag GCA_000008285 TEST_DATA/GCA_000008285.1_ASM828v1_genomic.fna
prokka --cpus ${SLURM_CPUS_PER_TASK} --force --kingdom Bacteria --outdir prokka_GCA_000021185 \
    --genus Listeria --locustag GCA_000021185 TEST_DATA/GCA_000021185.1_ASM2118v1_genomic.fna
prokka --cpus ${SLURM_CPUS_PER_TASK} --force --kingdom Bacteria --outdir prokka_GCA_000026705 \
    --genus Listeria --locustag GCA_000026705 TEST_DATA/GCA_000026705.1_ASM2670v1_genomic.fna
prokka --cpus ${SLURM_CPUS_PER_TASK} --force --kingdom Bacteria --outdir prokka_GCA_000168635 \
    --genus Listeria --locustag GCA_000168635 TEST_DATA/GCA_000168635.2_ASM16863v2_genomic.fna
prokka --cpus ${SLURM_CPUS_PER_TASK} --force --kingdom Bacteria --outdir prokka_GCA_000168815 \
    --genus Listeria --locustag GCA_000168815 TEST_DATA/GCA_000168815.1_ASM16881v1_genomic.fna
prokka --cpus ${SLURM_CPUS_PER_TASK} --force --kingdom Bacteria --outdir prokka_GCA_000196035 \
    --genus Listeria --locustag GCA_000196035 TEST_DATA/GCA_000196035.1_ASM19603v1_genomic.fna

Submit this job using the swarm command.

swarm -f prokka.swarm -g 2 -t 6 --module prokka/1.13
-g # Number of Gigabytes of memory required for each process (1 line in the swarm command file)
-t # Number of threads/CPUs required for each process (1 line in the swarm command file).
--module prokka Loads the prokka module for each subjob in the swarm