Daily Bulletin Archive

Sep. 11, 2017

Users can now get a quick, timely look at Cheyenne system activity with the expanded CISL Resource Status web page. A new table on the page shows the level of activity in each Cheyenne queue, including the number of jobs running, how many nodes are in use, and how many jobs are waiting to start in the queue. It also displays the number of jobs that are being held, which can happen for a variety of reasons.

The information is intended to help Cheyenne users decide when to submit jobs and which queue to specify. Users can check on the status of their own individual jobs by running qstat -u $USER as detailed in Managing and monitoring jobs. The expanded section shows an example of qstat output and addresses what to do if a job is held.

Sep. 8, 2017

CISL’s documentation for Cheyenne supercomputer users now includes details regarding how to load Python modules and custom-built Python packages as well as how to set up and maintain a Python virtual environment.

Setting up a virtual environment is particularly important for those who want to avoid version conflicts when using CISL-built Python packages along with packages that they install or develop themselves. The step-by-step process is described here.

Sep. 7, 2017

Due to unexpected issues encountered in the early stages of the planned outage, the Laramie test cluster will be continue to be unavailable until Friday, September 15, to allow CISL staff to complete important hardware and system software upgrades. This extension is to ensure minimal downtime for Cheyenne in October when similar upgrades will be performed.

Users will not be able to log in to the system throughout the outage. Any jobs that were running on Laramie when the outage began were killed and will need to be resubmitted after the upgrades have been completed.

Users will be informed via the CISL Notifier service when the system is returned to service.


Sep. 5, 2017

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

Sep. 4, 2017

The CISL Help Desk and Consulting Office will be closed Monday, September 4 for the Labor Day Holiday.

For assistance with any urgent issues, call 303-497-2400 or email cislhelp@ucar.edu both of which are always monitored.

Sep. 1, 2017

The ftools suite of Fortran tools—a set of utilities that support a range of needs for handling legacy code and interoperability with C—has been installed on the Cheyenne supercomputing cluster. Addition of the tools was announced in a notice to the Fortran Interest Group* mailing list.

The suite includes:

  • coco - a Fortran preprocessor

  • convert - converts fixed form source to a free form source that is also fixed form

  • env2inc - prepares an include file for use with coco that contains information about the processor

  • f90aib - part of the moware suite that makes interface blocks from procedure source

  • f90ppr - a preprocessor and pretty-printer for Fortran source

  • f90split - splits multi-procedure Fortran source files into one-procedure, one-file

  • f90tops - writes Fortran source as postscript (for inclusion in a slide for a talk, for example)

  • ftnchek - checks Fortran 77 code for possible semantic errors

  • h2m - reads C language header files and writes a Fortran module containing the same information (allowing use of a library written in C from Fortran)

  • mkmf - a script that reads a directory of Fortran code and generates a makefile honoring dependencies

  • preconvert - repairs some non-standard source issues that convert has

  • to_f90 - a fixed form to free form source converter

To use ftools, first run module load ftools on Cheyenne.

*The Fortran Interest Group mailing list is managed by Dan Nagle, CISL Consulting Services Group software engineer and a member of the U.S. Fortran Standards Technical Committee. Individuals interested in joining the mailing list and participating in discussions should email the group.

Aug. 24, 2017

The Laramie test cluster will be unavailable from 7 a.m. MDT Monday, August 21, until  5 p.m. MDT  Friday, August 25, to allow CISL staff to perform important hardware and system software upgrades.

Users will not be able to log in to the system throughout the outage and any jobs on Laramie that have not finished running when the outage begins will be killed and will need to be resubmitted after the upgrades have been completed.

Users will be informed via the CISL Notifier service when the system is returned to service.

Aug. 17, 2017

CISL Help Desk and Consulting Services will close at 3:30 p.m. MDT today to accommodate a celebration of the 50th anniversary of the NCAR Mesa Lab’s dedication. The anniversary ceremony will be streamed live on the AtmosNews Facebook page beginning at 6 p.m.

Users may still email questions or problems to cislhelp@ucar.edu and they will be addressed as soon as possible.

Aug. 15, 2017

Software engineers from NCAR, NOAA, NREL, UCAR, and other institutions are invited to attend a free, one-day training session on Intel Parallel Studio from 8:30 a.m. to 4:30 p.m. on Wednesday, August 16.

Topics to be covered include Intel’s performance and threading analysis tools as well as Intel MPI, cluster tools, Python distribution, and Intel libraries. A detailed agenda is available here.

Intel staff members will provide the training at the Foothills Lab (FL2-1022) in Boulder. Please register here to attend, either in person or by webcast. The training will not be recorded.

Aug. 14, 2017

The Rocky Mountain Advanced Computing Consortium’s 7th annual High Performance Computing (HPC) Symposium, August 15-17 in Boulder, will feature an innovative “Keynote Debate” on the future of HPC architecture. In another keynote, New York filmmaker, composer and director Kenji Williams will speak about his NASA-powered data visualization spectacle, the film “BELLA GAIA.”

Keynote debate participants will be Marc Hamilton, Vice President of Solutions Architecture and Engineering at NVIDIA; Mike Vildibill, Vice President of Exascale Development Programs at Hewlett Packard Enterprise; Jerry Lotto, Director HPC and Technical Computing at Mellanox; and William Magro, Chief Technologist for HPC Software at Intel. Dr. Thomas Hauser, Director of Research Computing at CU-Boulder and RMACC Chair, will act as debate leader, and Tiffany Trader, Managing Editor of HPCwire, will moderate the debate.

The symposium’s technical program features six concurrent tracks covering a wide range of advanced computing topics, with a particular emphasis on data analytics and visualization. See the RMACC site for more information and to register to attend.