CHPC News Announcements

NVidia online OpenACC course and free development toolkit

Posted: September 22, 2015

NVidia will be offering a short online course on OpenACC programming starting Oct 1st. More details are at This should complement nicely the Pittsburgh Supercomputer Center OpenACC workshop that CHPC webcasts once a year (to come in early December)

Furthermore, NVidia has made available OpenACC programming tools including the PGI compiler for free for academic developers. The free compiler license is limited to a single desktop per user, so it could be useful for off-line development e.g. on a laptop. On CHPC machines one can keep on using our licensed PGI tools. More details are at

Matlab updated to R2015a

Posted: April 11, 2015

We have updated Matlab on Linux desktops and clusters to R2015a. This is a relatively minor update so we don't expect many issue with the update. If you encounter problems or want to update your Windows or Mac desktop, please, open a ticket with CHPC.

Tangent cluster down

Posted: March 30, 2015

Tangent cluster is having problems with a network switch so it has been taken down while the switch is being looked at. We will update once it's back up.

Matlab seminars

Posted: March 24, 2015

We will welcome Mathworks engineers to give two seminars titled "Top Productivity Tools and Acceleration Techniques in MATLAB" on Wednesday, April 8, from 2pm to 5pm at INSCC Auditorium (Rm. 110).

For more information and to register, please go to

R update on Linux machines

Posted: February 3, 2015

We have built a new distribution of R that takes advantage of multithreading when processing numerical arrays and made it the default R to use on CHPC's Linux systems including the clusters. The multithreaded build will run in parallel on a single compute node and standard R linear algebra benchmark achieves 5-10 speedup on kingspeak as compared to the single threaded build. To use multiple nodes, a distributed parallel package such as Rmpi or snow is still necessary.

We have installed external packages that have been built for the older versions but if there is an additional package you need, please, let us know.

For details how to use R at CHPC, see the documentation at

IDL update

Posted: January 23, 2015

We have updated the default IDL distribution to version 8.4. Please, let us know if you notice any problems with it.
Also, there are some users that use older version that is hardcoded to their environment. If you'd like to use the default (latest) version, either edit your shell init scripts or get in touch with us for help.

Jan 22: FastX server upgrade has been completed

Posted: January 22, 2015

The FastX server upgrade has been completed. Please remember to upgrade your FastX clients to the latest version (version 39), and if you have any problems send in a report to issues.

Supercomputing in Plain English - Video Conference - University of Oklahoma

Posted: January 16, 2015

Event date: January 20, 2015

Duration: 1 hour, but plan for it to go over by a bit


Video Conference feed also hosted at CHPC
INSCC Conference Room 345

Please send email to if you plan to attend so we can have a headcount. However, if you have already notified us at, no need to send another request.

Supercomputing in Plain English (SiPE), Spring 2015 Available live in person and live via videoconferencing

Please feel free to share this with anyone who may be interested and appropriate.

IF YOU'VE ALREADY REGISTERED, please forward or ignore -- there's no need to re-register.

Tuesdays starting Jan 20 2015, 1:30pm Central Time (3:30pm Atlantic, 2:30pm Eastern, 12:30pm Mountain, 11:30am Pacific, 9:30am Hawai'i-Aleutian)

Sessions are 1 hour, but please budget 1 1/4 hours, in case we run long or there are lots of questions.

Live in person: Stephenson Research & Technology Center boardroom, University of Oklahoma Norman campus

Live via videoconferencing: details to be announced


(You only need to register ONCE for the whole semester, not for every week.)

We already have over 250 registrations!

So far, the SiPE workshops have reached over 1500 people at 248 institutions, agencies, companies and organizations in 47 US states and territories and 10 other countries:

* 178 academic institutions; * 29 government agencies; * 26 private companies; * 15 not-for-profit organizations.

SiPE is targeted at an audience of not only computer scientists but especially scientists and engineers, including a mixture of undergraduates, graduate students, faculty and staff.

These workshops focus on fundamental issues of High Performance Computing (HPC) as they relate to Computational and Data-enabled Science & Engineering (CDS&E), including:

  • overview of HPC;
  • the storage hierarchy;
  • instruction-level parallelism;
  • high performance compilers;
  • shared memory parallelism (e.g., OpenMP);
  • distributed parallelism (e.g., MPI);
  • HPC application types and parallel paradigms;
  • multicore optimization;
  • high throughput computing;
  • accelerator computing (e.g., GPUs);
  • scientific and I/O libraries;
  • scientific visualization.

The key philosophy of the SiPE workshops is that an HPC-based code should be maintainable, extensible and, most especially, portable across platforms, and should be sufficiently flexible that it can adapt to, and adopt, emerging HPC paradigms.


1 semester of programming experience and/or coursework in any of Fortan, C, C++ or Java, recently

January 22 at 4pm -- FastX server upgrade

Posted: January 9, 2015

Duration: about an hour

On Thursday January 22 at 4pm we will be upgrading the server side of FastX on the cluster interactive nodes (includes the meteoXX and atmosXX nodes) and the frisco nodes. This process will not take long (about an hour), but there is a chance that existing FastX sessions will not be accessible after the upgrade so we strongly suggest that all FastX sessions are shut down before this time. If this is not possible, at a minimum users should save the results of any processes running within a FastX session.

After the server side upgrade all users will also have to upgrade their FastX clients.

The reason we are doing this upgrade at this time instead of waiting for the next downtime is that we have been notified that we can expect up to a 4-6X speed gain for remote visualization operations using this new server version (version 38) with the latest client version (version 39), based on information provided by the company which produces the FastX product. To see the other fixes and improvements included in the release as well visit the Starnet site .

As always, if you have any questions or concerns with these plans, please contact us.

Spring 2015 CHPC Presentation Schedule

Posted: January 6, 2015

Spring 2015 CHPC Presentation Schedule

All presentations are 1-2pm INSCC auditorium unless noted otherwise

* These classes are 1-3pm in INSCC Auditorium

** BMI Classroom (421 Wakara Way Room 1470) at 2-3pm

*** XSEDE Workshop schedules will be posted when available; these typically run from about 9am to 3 pm with an hour break along the way; users will need to register at XSEDE site.

Date                     Presentation Title                              Presenter
Friday January 9th	 XSEDE HPC Monthly Workshop: OpenMP***	         XSEDE
Tuesday January 13th	 Overview of CHPC	                         Anita Orendt
Tuesday January 20th	 Protected Environment at CHPC**	         Sean Igo
Tuesday January 27th	 Introduction to Linux, part 1*	                 Anita Orendt and Albert Lund
Tuesday February 3rd	 Introduction to Linux, part 2*	                 Albert Lund and Anita Orendt
Friday February 6	 XSEDE HPC Monthly Workshop: OpenACC***	         XSEDE
Tuesday February 10th	 Introduction to Linux, part 3*	                 Albert Lund and Anita Orendt
Tuesday February 10th	 NLP and AI Services at CHPC**	                Sean Igo
Tuesday February 17th	 Introduction to Parallel Computing	         Martin Cûma
Tuesday February 24th	 Hands-on Introduction to Python, Part 1* 	 Wim Cardoen and Walter Scott
Tuesday March 3rd	 Hands-on Introduction to Python, Part 2*	 Wim Cardoen and Walter Scott
Weds-Th March 4-5        XSEDE HPC Monthly Workshop:MPI***               XSEDE
Tuesday March 10th	 Hands-on Introduction to Numpy/Scipy* 	         Wim Cardoen and Walter Scott
Tuesday March 24th	 Intel Software Development Tools 	         Martin Cûma