Daily Bulletin Archive

Apr. 18, 2017

Allinea staff and CISL Consulting Services Group (CSG) personnel will host a hands-on workshop Tuesday, April 18, on using Allinea tools for debugging code and optimizing code performance.

The 1:30-5 p.m. session, in the VisLab (ML4) at NCAR’s Mesa Lab in Boulder, is for experienced users as well as others who are new to Allinea tools and would like help with current debugging, profiling, or code performance needs. Those interested are encouraged to attend in person.

The first 90 minutes will be a tutorial that remote participants can attend by webcast, which will not be recorded. The rest of the afternoon will be dedicated to hands-on help for on-site participants with debugging or performance optimization. Participants who would like input on performance issues are encouraged to generate .map files and Performance Reports output in advance. Documentation is provided here for Yellowstone users.

See a detailed agenda here.

Use this link to register for the workshop.

Apr. 18, 2017

CISL has implemented the Jupyter package on both the Cheyenne and Yellowstone systems, so IPython Notebook users can now work with its Jupyter Notebook replacement. User documentation also has been updated to describe how to start the IPython shell, Jupyter QtConsole and Jupyter Notebook on the CISL supercomputing systems. The IPython modules that were on Yellowstone have been removed; they contained a security flaw that is fixed in the Jupyter package.

Users can find links to the documentation on both the Cheyenne and Yellowstone menus.

Apr. 17, 2017

No Scheduled Downtime: Yellowstone, Cheyenne, Geyser_Caldera, HPSS, GLADE

Apr. 15, 2017

A semi-annual Mesa Lab building maintenance power-down scheduled for Saturday, April 15, should have little impact on university users of CISL’s high-end resources. Some Boulder-based UCAR/NCAR staff will be unable to log in to the Cheyenne or  Yellowstone systems or other services with their authentication tokens, but sessions that start before the power-down will not be affected.

The power-down should otherwise not affect the Cheyenne, Yellowstone, Geyser, and Caldera clusters, the GLADE system, or HPSS, which will remain in service at the NCAR-Wyoming Supercomputing Center (NWSC) in Cheyenne. The maintenance work is scheduled to begin at 6 a.m. and conclude by 6 p.m.

Some HPC support services and the HPSS disaster recovery resources that are housed at the Mesa Lab will be unavailable during the power-down. The affected services include the license servers  for Mathematica and the PGI compilers, the CISL web site, the help desk ticketing system, and SAM accounting system. The license server supporting MATLAB users on Yellowstone will not be affected.

Users who have urgent help requests during this time should call 303-497-2400 or 307-996-4300 to reach the NWSC operations center.

Apr. 14, 2017

The July 9-15 NCAR Undergraduate Leadership Workshop in Boulder gives upper-division college students a chance to explore careers in the atmospheric sciences; meet with NCAR scientists, grad students, and private-sector professionals; and connect with peers from around the nation. Areas of scientific focus include weather research, forecasting, climate modeling, solar dynamics, and societal impacts of severe weather and of climate change. Professional development includes advice on résumés and elevator speeches.

Each university or college department may nominate one student for the workshop. NCAR|UCAR provides lodging and meals, and the department provides student travel to Boulder, Colorado. Additional travel support may be provided to Minority Serving Institutions. The nomination and application deadline is April 15. For additional details, see Undergraduate Leadership Workshop.

Evaluations of the program, now in its 15th year, have found multiple long-term benefits. In addition to sharing this call for nominations with colleagues, we invite you to share information on successful outcomes of the workshop via this early online release from the Bulletin of the American Meteorological Society, “Long-term Impacts of a Career Development Workshop for Undergraduates.”

Apr. 14, 2017

Registration remains open for the final session in an NCAR/CISL series of workshops on Modern Fortran. The last workshop in the series is scheduled for Thursday, April 13. 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).

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

The workshop begins at 9 a.m. and will end by 4 p.m. with an hour break at noon.

Use one of the following links to register:

Apr. 11, 2017

The /glade/scratch file space for the Yellowstone, Geyser, and Caldera systems will point to the new, larger GLADE scratch system following a maintenance downtime that is scheduled for Tuesday, April 11. The old scratch space will be available in read-only mode as /glade/scratch_old after that date until June 1.

Yellowstone users who have not already done so should move their scratch files to /glade/scratch_cheyenne. After April 11, that new space will become /glade/scratch.

On June 1, /glade/scratch_old will be removed from all systems. The disk space will be repurposed for use as project space. Please see GLADE File Spaces for more information.

Apr. 11, 2017

The Yellowstone, Cheyenne, Geyser, and Caldera clusters and the GLADE file system will be unavailable from 8 a.m. to 5 p.m. MDT on Tuesday, April 11, to allow CISL staff to upgrade the GLADE file system.  

A system reservation will be put in place on batch jobs at 12 noon on Monday, April 10.  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.

Also see: GLADE scratch changes effective April 11

Apr. 7, 2017

NCL 6.4.0 is now the default version on the Yellowstone and Cheyenne systems.

To access this version run module load ncl on your command line after logging in.  Load previous versions by specifying the version number (for example, module load ncl/6.3.0).

Here are some of the highlights of this release:

  • Over 100 new functions (crop, heat stress, extreme value statistics, bootstrap, evapotranspiration, simple_legend)

  • Many improvements and fixes to HDF5, NetCDF4, and GRIB readers

  • Labelbars can be generated with triangle ends

  • Block style comments allowed

  • Numerous new graphical resources (including the overhaul of color resources to allow RGB/A values)

  • Many new example pages and scripts

  • MediumRes map database made the default for certain map outline and fill settings

  • Bug fixes

  • A new version (1.1) of the NCL User Guide (NUG) accompanies this release:

For complete details, see What's new in the current release.

Email Mary Haley <haley@ucar.edu> if you have questions or problems.

Apr. 6, 2017

Registration remains open for the NCAR/CISL series of one-day workshops on Modern Fortran. The next workshop is scheduled for Thursday, April 6. 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.

Workshops begin at 9 a.m. and end by 4 p.m. with an hour break at noon.

  • 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 one of the following links to register for one or more sessions: