"K" == Kim Peterson kimjohnpeterson@gmail.com writes:
Hi Kim,
I need to quit at this stage. Good luck in further exploring Qlustar. If someone on the list wants to take over, please go ahead. Unfortunately my resources don't allow to play the role of a thesis supervisor.
All the best,
Roland
K> Roland Thank you for the timely response, that, as usual, K> immediately identifies the issue for me. I did not set up a demo K> cluster during Qlustar install. I have an actual cluster K> composed of a Master node and 2 Compute nodes (the Master node is K> intended to be engaged as a compute resource along with the 2 K> Compute nodes during program execution). I use my desktop K> computer as a Front End, running the QluMan GUI from the K> Singularity container. I did not install a resource manager K> during the installation. I have set up a single user as K> described in Section 1.7 in the First Steps Guide.
K> The only Edge Platform selected during Qlustar install was K> Ubuntu/Bionic, and the only unionfs chroot I see reported in the K> Qlustar Management Interface - Manage Configs - Qlustar Images - K> Standard-bionic - unionFS chroot: is bionic. I have made no K> modifications to the chroot that was set up during installation.
K> The First Steps Guide Section 1.8 says: "The default MPI variant K> in Qlustar is OpenMPI and is automatically installed in the K> standard chroot during installation under Ubuntu."
K> I see the Note in the Installation Guide, Chapter 3, Step 9 that K> indicates the Demo Cluster is a requirement to be able to follow K> all the steps in the First Steps Guide, so it appears that since K> I did not install the Demo Cluster, I do not have OpenMPI K> installed. That adequately explains the absence of OpenMPI in my K> installation.
K> I spent some time looking through the Install Guide, Admin Manual K> and QluMan Guide to see if there was a procedure for installing K> OpenMPI on the Head node. I didn't find one. I see there are a K> number of OpenMPI related packages in the Qlustar Ubuntu K> Repository, but I am far from being familiar enough with Qlustar K> to try guessing about what might need to be done here. Can you K> describe the procedure I should use to install OpenMPI on my K> single Master/2 Compute node/remote attached Front End Qlustar K> cluster so that MPI enabled programs can be executed directly K> (without a Resource Manager) on the Head node, and the OpenMPI K> installation is properly tracked and managed by the Gluman GUI K> running on the Front End. I presume it would be a relatively K> simple procedure, something like: On the Head node, running as K> root, execute the instruction: apt install openmpi-gcc-4.0 In the K> QluMan GUI running on the Front End, set the following K> selections: K> In Manage Sets - Generic Property Sets: K> Verify or set this Do that K> In Manage Sets - Config Sets: K> Verify or set this Set that K> In Manage Configs - Qlustar Images - Standard-bionic: K> Select something K> Reboot the Head node and Compute nodes
K> The academic study that I am engaged in requires that the Qlustar K> cluster be set up so that it is operated by a single user, and K> able to run programs interactively 100% of the time, in much the K> same way that a PC computer is used, so executing directly on the K> Head node and running interactively is how this Qlustar cluster K> will always be used, and I want to set it up correctly.
K> Let me know if the QluMan GUI has the ability to run command line K> instructions on the Head node, so, in my case, I could compile K> and execute programs from the Front End using the QluMan GUI (I K> could initiate this request in a separate email after we are done K> with the OpenMPI question, if you prefer).
K> Thanks, Kim _______________________________________________