Optum cluster

1. Get GCP VMs:
   a. optum-master (8 vCPUs, 170 GB memory)
   b. 2x optum-slave (4 vCPUs, 125 GB memory)

2. Run on each VM:
   mkdir /mnt/gcs-bucket
   sudo chmod 777 /mnt/gcs-bucket/
   export GCSFUSE_REPO=gcsfuse-`lsb_release -c -s`
   echo "deb http://packages.cloud.google.com/apt $GCSFUSE_REPO main" | sudo tee /etc/apt/sources.list.d/gcsfuse.list
   curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
   sudo apt-get update
   sudo apt-get install gcsfuse
   sudo usermod -a -G fuse $USER
   gsutil cp gs://ace-deploy/optum-?.tar.gz .
   tar xvf optum-?.tar.gz
   crontab -e
     @reboot /home/podalv/init.sh && /home/podalv/startup.sh
   ./init.sh
   
3. Run on master:
   update slaves.dat with the current IP addresses of slave VMs