Pitzer

HOWTO: Collect performance data for your program

This page outlines ways to generate and view performance data for your program using tools available at OSC.

Intel Tools

This section describes how to use performance tools from Intel. Make sure that you have an Intel module loaded to use these tools.

Intel VTune

Intel VTune is a tool to generate profile data for your application. Generating profile data with Intel VTune typically involves three steps:

Honscheid Condo on Pitzer Cluster

Condo model refers to that the participants (condo owners) lease one or more compute nodes for the shared cluster while OSC provides all infrastructure, as well as maintenance and services. The Honscheid Condo on the Pitzer cluster is owned by Klaus Honscheid from OSU Physics.

Hardware

Detailed system specifications:

  • 4 total nodes

    • 40 cores per node

    • 192 GB of memory per node

    • 1 TB of local disk space

Pitzer Production Deployment December 4

Pitzer, OSC's latest cluster, will be deployed to full production status on Tuesday, December 4. All users will have access to the cluster and will be able to submit jobs. For details on how to modify your jobs to run on Pitzer, please see https://bit.ly/2P7G4Zz For general information about the new cluster, please visit osc.edu and see our Cluster Computing pages. If you have any questions, please contact OSC help https://bit.ly/29AXmdf

CCAPP Condo on Pitzer Cluster

Condo model refers to that the participants (condo owners) lease one or more compute nodes for the shared cluster while OSC provides all infrastructure, as well as maintenance and services. CCAPP Condo on Pitzer cluster is owned by the Center for Cosmology and AstroParticle Physics, at OSU. Prof. Annika Peter has been heavily involved in specifying requirements.

Hardware

Detailed system specifications:

  • 10 total nodes

    • 40 cores per node

Pitzer SSH key fingerprints

These are the public key fingerprints for Pitzer:
pitzer: ssh_host_rsa_key.pub = 8c:8a:1f:67:a0:e8:77:d5:4e:3b:79:5e:e8:43:49:0e 
pitzer: ssh_host_ed25519_key.pub = 6d:19:73:8e:b4:61:09:a9:e6:0f:e5:0d:e5:cb:59:0b 
pitzer: ssh_host_ecdsa_key.pub = 6f:c7:d0:f9:08:78:97:b8:23:2e:0d:e2:63:e7:ac:93 

HOWTO: IME, Cache & Burst Buffer for Scratch File System

The Owens and Pitzer clusters have access to the DDN Infinite Memory Engine (IME), a fast data tier between the compute nodes and the /fs/scratch file system. IME is a Solid State Disk (SSD) that can act as a cache and burst buffer to improve the performance of the scratch file system.

While some jobs will benefit from using IME, others will not. You need to understand the workflow of IME well, since sometimes it is not very intuitive. Files must be explicitly imported, synchronized and/or purged.

Services have been restored after switch failure

At about 1:50 am on November 14th, 4:05 am on November 17th, and 5:00 am on November 18th, OSC experienced three separate major switch failures. We restored all the services after each outage, and have completed the update to the NetApp appliance that provides the home directory service to address a separate bug triggered by the outage. We are still working with the vendor for the network switches on a permanent resolution to the bug that has caused these interruptions. We will continue to keep you informed.

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