Daily Bulletin Archive

March 19, 2012

XSEDE Training at TACC: C Programming Basics
March 19, 2012
9 a.m. – 4 p.m. (CT)
J.J. Pickle Research Campus
ROC 1.603
10100 Burnet Rd.
Austin, TX 78758

*This class will be webcast.*

On Monday, March 19, the Texas Advanced Computing Center will present
the training session: C Programming Basics.

Basic C programming skills are essential for researchers in areas of
High Performance Computing. These skills can be directly applied to
resources at the Texas Advanced Computing Center and in any Linux/Unix
environment. This class is intended for the beginner wishing to gain
more experience in C programming.

9:00 a.m. - 3:00 p.m. Overview of the important concepts related to C
syntax and programming.

3:00 p.m. - 4:00 p.m. Short lab with exercises showing how to compile
and run C code. Exercises (with solutions) will be included to show the
basic process of developing C programs.


Please submit any questions you may have via the Consulting section of
the XSEDE User Portal.  https://portal.xsede.org/help-desk

March 19, 2012

A recent survey of NCAR's scientific computing community showed that 40% of respondents have had no experience with the use of modules to set up, modify or maintain their user environment.

With four compilers to be available on Yellowstone, and multiple software and library versions with each compiler, using modules will help you ensure that your environment is always properly configured.

The modules utility is already available on the existing NCAR supercomputing and analysis systems that CISL manages. If you aren't familiar with them and how they can help you in your work, take a quick look at our new web page: Environment modules.

March 14, 2012

For researchers interested in or planning to apply for the upcoming University allocation opportunities on NCAR's forthcoming Yellowstone environment, Dave Hart, NCAR's User Services manager, will host an online Q&A session March 13, 2012, 1pm-3pm (MDT), that will include a brief description of the Yellowstone system, tips for writing successful allocation requests, and an opportunity to ask questions.

To call in to the meeting, please use the following:

Audio Dial-In Information:

U.S & Canada: 866.740.1260

Access Code: 4971234

To join the meeting online and see the slides: https://cc.readytalk.com/r/eqruqiywkzp4

The Yellowstone system, a 1.5-Pflops HPC system is scheduled to enter production in late summer 2012, and next deadline for University allocations is March 26. This session is an opportunity for potential requesters to ask questions about the system, eligibility requirements and writing allocation requests.

Details on Yellowstone allocation opportunities and deadlines are available at https://www2.cisl.ucar.edu/docs/allocations.

March 6, 2012

XSEDE Training at TACC: Fortran 90/95/2003 Programming

March 5, 2012 (Monday)
1 p.m. - 5 p.m. (CT)
J.J. Pickle Research Campus
ROC 1.603
10100 Burnet Rd.
Austin, TX 78758

Fortran is a modern language that is reviewed and updated regularly to meet the needs of the scientific community. It facilitates a traditional procedural programming style, but also supports object-oriented programming similar to C++.

Fortran programming skills are highly useful for developing new applications that achieve excellent performance, and for working with a large body of existing scientific codes that have been written in Fortran. These skills can be directly applied to using resources at computing centers, such as the Texas Advanced Computing Center, and on any Linux/Unix/Windows environment. The class is intended for the intermediate user wishing to gain expertise in Fortran90/95/2003/2008 programming.

This class will be webcast.


Please submit any questions you may have via the Consulting section of the XSEDE User Portal.

February 24, 2012

CISL daily backs up the files in your personal /glade/home file space, but that is not the case in other GLADE directories you might be using.

For details on our backup and purge policies, please review our newly revised GLADE File System documentation. Be sure to take a look at our new Transferring files documentation, too.

Let us know what you think. We look forward to hearing from you.

February 24, 2012

Consulting walk-in service will be closed during the Software Engineering workshop to be held next week February 21 through February 24 to allow consulting staff members to attend the workshop. Users may continue to file tickets using helpdesk channels which will be responded to as usual.

February 21, 2012

How to transfer files to and from our HPC, analysis, and storage systems is now pulled together for easy reference in a new Transferring files documentation section.

In an ongoing effort to help you find the information you need more quickly, we also recently reorganized the documentation menu you will see on that page and many others.

Want to let us know what you think? Look for the "Feedback" link at the very bottom of that new menu.

We look forward to hearing from you.

February 21, 2012


We are announcing the following opportunity for graduate students and postdoctoral researchers in the atmospheric sciences, applied mathematics or related fields:

Dynamical Core Model Intercomparison Project (DCMIP):

DCMIP Summer School on Future-Generation Non-hydrostatic Weather and Climate Models

Dates: July 30 - August 10,2012


The application period will run from mid February to the end of March, 2012.


This multidisciplinary two-week summer school and model intercomparison project will be held at the National Center for Atmospheric Research from July 30 to August 10, 2012. This summer school brings together graduate students, postdocs, atmospheric modelers, expert lecturers and computer specialists to create a stimulating, unique and hands-on driven learning environment. It will lead to an unprecedented student-run international model intercomparison project, and thereby train the future generation of scientists engaged in global atmospheric model developments. Special attention is paid to the role of emerging non-hydrostatic global atmospheric models.


In particular we focus on atmospheric dynamical cores, which describe the fluid flow component of general circulation models. The summer school and model intercomparison project will `promote active learning, innovation, discovery, mentorship and the integration of science and education. We anticipate testing about 10-12 dynamical cores that represent a broad spectrum of the modeling approaches in the international weather and climate modeling community.

Hosted by: Computational & Information Systems Laboratory National Center for Atmospheric Research (NCAR), Boulder, CO

For more information please visit:

February 21, 2012

HPSS archival jobs initially submitted to the archive and share queues, then diverted to the HOLD queue because of project overrun, have been failing due to incorrect queue redirection. The expected net effect of  this change on Monday, February 13, is that HPSS archive jobs will run on the share or archive queue to which they were initially submitted, and users should see expedition of these jobs.

February 16, 2012

With recent refinements to the Yellowstone delivery and installation schedule and based on feedback from users, CISL has extended the deadline for University and NCAR Accelerated Scientific Discovery (ASD) submissions to March 5, 2012.

CISL will make dedicated, large-scale resources available on NCAR's forthcoming Yellowstone system from approximately August through October 2012 as part of its ASD initiative for university and NCAR research. Eligible projects may span all of the geosciences and supporting computational sciences.

NSF-supported university researchers interested in applying for ASD computational resources can view eligibility and proposal requirements at: https://www2.cisl.ucar.edu/docs/allocations/asd. Applications are now due March 5, 2012.

NCAR researchers interested in applying for ASD computational resources may view eligibility and proposal requirements at: https://www2.cisl.ucar.edu/docs/allocations/2012nsc/instructions. NCAR ASD projects will be chosen from submissions for NCAR Strategic Capability (NSC) projects, also now due on March 5, 2012.

The Yellowstone system will be a 1.6-petaflops IBM iDataPlex cluster with 74,592 Intel Sandy Bridge EP cores, 149.2 TB of memory, and 11 PB of parallel disk storage. Yellowstone is expected to deliver nearly 30 times the capacity of NCAR's current Bluefire system.

For more details on Yellowstone, see:

Questions on the Yellowstone system, ASD allocations, and the user transition process may be directed to cislhelp@ucar.edu.