Parallel computing on CPU

[landik]

Is it possible to use more than 1 processor core for calculations to speed up the processing process?

[doppelgrau]

Yes, you can use a script like this one:

#!/bin/bash

set -o errexit

dir=$(pwd)
# your nextcloud path
cd /var/www/nextcloud/html/
sudo -u www-data php --define apc.enable_cli=1 ./occ face:stats

echo -n "Select user for parallel processing:"
read user
echo ""

echo "Synchronizing $user files..."
sudo -u www-data php --define apc.enable_cli=1 ./occ face:background_job -u $user --sync-mode
echo "Done"

echo "Analyzing $user files..."
for i in {1..3}; do
    sudo -u www-data php --define apc.enable_cli=1 ./occ face:background_job -u $user --analyze-mode &
    pids[${i}]=$!
done

for pid in ${pids[*]}; do
    wait $pid
done
echo "Done"

echo "Calculating $user face clusters..."
sudo -u www-data php --define apc.enable_cli=1 ./occ face:background_job -u user --cluster-mode
echo "Done"
cd $dir

and in the for loop select the number of parallel times it runs.
CAUTION: it need also enough memory for running n times in parallel.

And if you use the docker image for external processing (model 5) you need to rebuild it to support that (https://github.com/doppelgrau/facerecognition-external-model/tree/gunicorn) and set the enviroment variable