Daily Bulletin Archive

Jun. 19, 2018

Cheyenne downtime: Tuesday, June. 19th 8:00 a.m. - 8:00 p.m.

Geyser_Caldera downtime: Tuesday, June, 19th 8:00 am. - Thursday June 21st. 6:00 pm.

GLADE downtime: Tuesday, June, 19th 8:00 am. - 4:00 pm.

HPSS no downtime scheduled, access will be impacted by the above outages.

Jun. 18, 2018

Geyser and Caldera users should be preparing for the June 19 operating system update to CentOS 7 so their executables and job scripts are ready to run. Several nodes on these systems have already been updated to enable testing and porting of users’ applications and workflows to the CentOS 7 environment. Documentation for how to do this is available here.

As announced recently, users will need to recompile their executables to run on Geyser and Caldera under CentOS 7. Job scripts also may need to be updated to run in the new environment as version numbers of most software on the systems will be different. To facilitate the transition, CISL staff have installed new versions of compilers, MPI and NetCDF libraries, and scripting languages including MATLAB and IDL.

All of Geyser and Caldera will be upgraded to CentOS 7 on Tuesday, June 19. Users are encouraged to begin testing on the new operating system as soon as possible and to contact cislhelp@ucar.edu with any questions or problems. CISL will make every effort to resolve issues reported by the close of business on Friday, June 15. Issues reported after that may not be addressed until after the systems are returned to service.

Jun. 15, 2018

The CISL Help Desk and Consulting support will close at 3:00 p.m. Friday so staff members can attend a UCAR function.

Jun. 12, 2018

Cheyenne users and others who transfer files via the Globus Command Line Interface (CLI) are advised to make sure they are using the CLI application, which is installed on the CISL data-access nodes. The CLI application has replaced the hosted legacy CLI, which Globus will no longer support starting August 1.

The CISL Globus file transfers documentation describes how to get started using the CLI application and includes links to detailed Globus documentation. Some user scripts that are configured to make unattended transfers may need to be revised.

Jun. 11, 2018

No downtime: Cheyenne, GLADE, Geyser_Caldera and HPSS

Jun. 11, 2018

NCAR staff and university users of systems like Cheyenne and GLADE have diverse data management needs and levels of expertise, and CISL’s Digital Asset Services Hub (DASH) is dedicated to providing the necessary guidance and support. This includes evaluating extensive online resources that are freely available to everyone and selecting those that are most relevant to our users.

Sophie Hou, NCAR Data Curation & Stewardship Coordinator, recommends exploring the Data Management Plan Preparation Guidance and some of these free data management training and education resources to learn about topics ranging from why and how to create a data management plan to such best practices as assigning descriptive file names.

Jun. 8, 2018

A recording of the May 25 tutorial, “Using Cheyenne, Geyser and Caldera,” is now available on the CISL web site. See the course page to review the presentation and download the slides.

The 70-minute tutorial familiarizes users with the Cheyenne computing environment; how to access software, including compilers and MPI libraries; submitting batch jobs using the PBS scheduler; and using Slurm to schedule data analysis and visualization tasks.

Jun. 5, 2018

A number of Geyser and Caldera nodes are now available for users to begin testing and porting their applications and workflows to the CentOS 7 environment. Documentation for how to do this is available here.

CISL staff have installed important software such as compilers, MPI and NetCDF libraries, and scripting languages including MATLAB and IDL. As announced recently, users will need to recompile their executables to run on Geyser and Caldera under CentOS 7. Job scripts also may need to be updated to run in the CentOS 7 environment as version numbers of most software on the systems will be different.

All of Geyser and Caldera are scheduled to be upgraded to CentOS 7 on Tuesday, June 19. Users are encouraged to begin testing on the new operating system as soon as possible and to contact cislhelp@ucar.edu with any questions or problems.

Jun. 4, 2018

NCAR’s new Casper cluster, which is expected to go into production this summer, is a heterogeneous system of specialized data analysis and visualization resources and large-memory, multi-GPU nodes. Named for the city in Wyoming, Casper is the successor to Geyser and Caldera, which have been in service since 2012 and will be decommissioned by the end of 2018.

The new system, procured from PCPC Direct, Ltd., consists of a total of 24 Supermicro nodes featuring Intel Skylake processors. See the new Casper web page for additional details, and look for more information in the CISL Daily Bulletin in the coming weeks.

Jun. 4, 2018

No downtime: Cheyenne, GLADE, Geyser_Caldera and HPSS

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