Daily Bulletin Archive

Mar. 27, 2017

CISL will implement a 45-day purge policy for the /glade/p/datashare file space on Monday, March 27. The datashare space is for temporary, short-term use through the NCAR Data Sharing Service, which enables users to share with collaborators who otherwise do not have access to NCAR storage resources.

Users of the sharing service and datashare space should be aware that when the policy goes into effect, files that have not been accessed within the previous 45 days will be deleted immediately.

The purge policy will be the same as the one already in place for GLADE’s scratch space.

Mar. 24, 2017

Applications are being accepted for the Women in IT Networking at SC (WINS) program at the SC17 conference to be held Nov. 12-17 in Denver. WINS was launched to expand the diversity of the SCinet volunteer staff and provide professional development opportunities to highly qualified women in the field of networking.

The WINS program is seeking qualified female U.S. candidates in their early to mid-career to join the SCinet volunteer team to help build and operate SCinet for SC17. Selected candidates will receive full travel support and mentoring by well-known engineering experts in the research and education community.

Use the 2017 WINS Application Form to apply by 11:59 p.m. Friday, March 31, 2017 (Pacific time). More information can be found on the SC17 WINS page.

Mar. 23, 2017

The video and slides from CISL’s March 9 class introducing users to the new Cheyenne supercomputer are now available here in the CISL Course Library. The new system was released to the user community on March 14.

The 66-minute tutorial covers typical workflows in the Cheyenne environment as well as performance and operational differences between the Yellowstone and Cheyenne systems. In addition to tutorial, CISL recommends that users review the Quick start: Cheyenne and GLADE file spaces documentation before working on Cheyenne.

Mar. 22, 2017

Registration is now open for an NCAR/CISL series of four one-day workshops on Modern Fortran beginning Thursday, March 23. Dan Nagle, CISL Consulting Services Group software engineer and a member of the U.S.  Fortran Standards Technical Committee, will provide the training at the NCAR Mesa Lab in Boulder (VisLab ML4). Each session will be webcast.

Each workshop will begin at 9 a.m. and end at 4 p.m. with an hour break at noon.

  • Scalar Fortran - March 23: Scalar topics, including scope, declarations, and executables.

  • Array Fortran - March 30: Array topics, including declarations, executables, and intrinsics.

  • Object-Oriented Fortran - April 6: Making user-defined types, information hiding, generic names, operator and assignment overloading, and inheritance.

  • Parallel Fortran - April 13: Coarrays and related topics, including memory management and communications schemes (for example, synchronization vs. events).

Use this form to register to attend one or more workshops, and indicate if you will attend in person at the Mesa Lab or via webcast: NCAR/CISL Modern Fortran Workshop Series.

Mar. 20, 2017

CISL is now accepting requests from university-based researchers for large-scale allocation requests for the new 5.34-petaflops Cheyenne cluster; submissions are due March 20. The spring opportunity encompasses both university requests for large allocations and Climate Simulation Laboratory (CSL) requests.

The CSL ensures that computing time is available for researchers with extremely demanding, high-profile climate simulations. Typically these require 10 million core-hours or more per year, perhaps for several years, and may produce many terabytes of model output that must be stored for analysis and comparison with other simulations and with observations. See the CSL web page for details.

Large allocations on Cheyenne are those requesting more than 400,000 core-hours. CISL accepts requests from university researchers for these large-scale allocations every six months. For submission instructions and information regarding available resources, see the CISL HPC Allocations Panel (CHAP) page.

Please contact cislhelp@ucar.edu if you have any questions about these two opportunities or need help determining which may be a better fit for your planned computational work.

Mar. 20, 2017

The National Science Foundation (NSF) is requesting input on future science challenges and associated cyberinfrastructure needs. NCAR encourages responses from the community to the Dear Colleague Letter (NSF 17-031, PDF, html) titled “Request for Information (RFI) on Future Needs for Advanced Cyberinfrastructure to Support Science and Engineering Research (NSF CI 2030).”

The NSF announcement said contributions “will be used during the coming year to inform the Foundation's strategy and plans for advanced cyberinfrastructure investments. We invite bold, forward-looking ideas that will provide opportunities to advance the frontiers of science and engineering well into the future.”

The deadline for responding to the RFI is April 5. To provide input into NCAR’s response, please submit suggestions via this form no later than March 22.

Mar. 20, 2017

The Yellowstone, Cheyenne, Geyser, and Caldera clusters and the GLADE file system will be unavailable from 7 a.m. to 5 p.m. MDT on Tuesday, March 21, to allow CISL staff to update several critical components of the NWSC networking infrastructure. HPSS will be unavailable until 11:00 am.

A system reservation will be put in place 12 hours before the scheduled downtime.  After the system reservation is in place jobs submitted with specified job times that overlap the reservation period will remain on hold until the system is restored to service. Running jobs that have not finished when maintenance begins will be killed and will need to be resubmitted after the maintenance period.

We apologize for any inconvenience this might cause. Users will be informed via the CISL Notifier service when the systems are returned to production.

Mar. 17, 2017

The Cheyenne supercomputer is now available to all users and projects with Cheyenne allocations, following several months of intensive work by many CISL groups.

Production jobs for Accelerated Scientific Discovery (ASD) projects will continue to have priority on Cheyenne through the end of March. Other users can now work on porting code, preparing job scripts, and migrating files as needed to the new GLADE scratch space.

The GLADE file system is in transition to expand its capacity and to support work on Cheyenne, Yellowstone, Geyser, and Caldera. See our GLADE documentation for details.

Cheyenne has fewer queues than Yellowstone initially because of limitations with the current version of the PBS job scheduling system. Users will have access to the “regular,” “capability,” and “share” queues. An “ampsrt” queue is provided for AMPS project jobs. Additional queues, such as “premium” and “economy,” will be added as the desired functionality becomes available. See the Cheyenne queues web page for more details.

Please contact cislhelp@ucar.edu if you have any questions.

Mar. 13, 2017

Graduate and undergraduate students who use advanced computing in their research can learn a lot in just a few days at PEARC17, the Practice and Experience in Advanced Research Computing conference in New Orleans, July 9-13, 2017.

Students who attend can participate in activities that include:

  • a one-day intensive collaborative modeling and analysis challenge;

  • a session on careers in modeling and large data analytics;

  • a mentorship program;

  • a speed-networking session with representatives from the PEARC17 exhibitors.

Students’ technical paper submissions need to be in by March 13. Poster submissions are due May 1. Financial support opportunities are available for student contributors. See http://www.pearc.org/student-program for details.

Mar. 9, 2017

The CISL User Services Section will present an in-person and online tutorial at 2 p.m. Thursday, March 9, at the NCAR Mesa Lab in Boulder to help users prepare to work with the new Cheyenne HPC system. The 60- to 90-minute tutorial will cover typical workflows in the Cheyenne environment as well as performance and operational differences between the Yellowstone and Cheyenne systems.

Topics to be covered include:

  • Technical specifications for Cheyenne and the expanded GLADE file systems

  • The Cheyenne computing environment

  • Accessing software, including compilers and MPI libraries

  • Submitting batch jobs using the PBS scheduler

The session will conclude with a Q&A session, so please bring other general questions and concerns not covered above. Register to attend in person—at the VisLab in NCAR’s Mesa Lab (ML4) in Boulder—or via webcast by selecting a link below:

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