Customizing the LSF Application Environment

Edit the LSF Environment JSON for Your Purposes:

1. Copy default-lsf-env.json to something convenient like env0.json.

   1. CODE

      cp default-lsf-env.json env0.json

2. Note Line numbers listed below reference the collapsible example file above. Once changes start being made on the system, the line numbers may change.

3. Line 2 : "EnvName" is set to lsf by default, but you can specify something unique if needed.

   1. NOTE: Currently, - characters are not supported in values forEnvName.

4. Lines 5-17 can be modified for a single pool of identical compute resources or they can be duplicated and then modified for each “hardware” configuration or “pool” you choose. When duplicating, be sure to add a comma after the brace on line 17, except when it is the last brace, or the final pool declaration.

   1. PoolName: This will be the apparent hostnames of the compute resources provided for LSF.

      1. It is recommended that all pools share a common trunk or base in each PoolName.

   2. PoolSize: This is the maximum number of these compute resources.

   3. ProfileName: This is the default profile name, az1: If this is changed, you will need to carry the change forward.

   4. CPUs: This is the targeted CPU-core limit for this "hardware" configuration or pool.

   5. ImageName: This is tied to the AMI that will be used for your compute resources. This name will be used in subsequent steps.

   6. MaxMemory: This is the targeted memory limit for this "hardware" configuration or pool.

   7. MinMemory: reserved for future use; can be ignored currently.

   8. UserData: This string is a base64 encoded version of user_data.

      1. To generate it:

         1. cat user_data.sh | base64 -w 0

      2. To decode it:

         1. echo "<LongBase64EncodedString>" | base64 -d

      3. It’s not required to be perfectly fine-tuned at this stage; it will be refined and corrected later.

      4. Exampleuser_data.sh:

         1. CODE

            #!/bin/bash
            set -x
            IP=$( hostname -I |awk '{print $1}' )
            NEW_HOSTNAME=ip-$( echo ${IP} |sed 's/\./-/g' )
            hostname ${NEW_HOSTNAME}
            echo >> /etc/hosts
            echo -e "${IP}\t\t${NEW_HOSTNAME}" >> /etc/hosts
            . /opt/lsf/conf/profile.lsf
            lsadmin limstartup
            lsadmin resstartup
            badmin hstartup

   9. VolumeSize: reserved for future use; can be ignored currently.

5. All other fields/lines in this asset can be ignored currently.