Daily Bulletin Archive

Jan. 22, 2018

The Geyser and Caldera clusters will be unavailable Monday, January 22, from approximately 10 a.m. until 2 p.m. to allow CISL staff to perform updates on the systems’ networking configurations.

A system reservation will be in place to prevent batch jobs from executing after 10 a.m. Jobs that are running when the outage begins will be killed. No impact to other NCAR HPC systems or the GLADE file system is expected during the outage.

CISL will inform users through the Notifier service when the system is restored. We apologize for any inconvenience this will cause and thank you for your patience.

Jan. 22, 2018

The OU Supercomputing Center for Education & Research is offering a free “Supercomputing in Plain English (SiPE)” workshop in weekly sessions beginning January 23 and running through May 1. Participants can attend live in person on the University of Oklahoma campus in Norman or via videoconference. Each hour-long session begins at 11:30 a.m. Mountain time.

Workshop sessions focus on fundamental High Performance Computing (HPC) issues and topics, 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; and scientific visualization. Slides from previous workshops are available here.

Use this form to register for the semester.

SiPE is targeted at an audience of computer scientists and other scientists and engineers, including undergraduates, graduate students, postdocs, faculty, staff, and professionals. Participants should have some recent programming experience or one semester of coursework in Fortan, C, C++, or Java.

Jan. 19, 2018

CISL has added a new script for Cheyenne users that simplifies the launching of resource-intensive compilation jobs on the system’s batch nodes. Running qcmd as shown in this new documentation starts a non-interactive job on a single batch node in the Cheyenne "regular" queue with a default wall-clock time of 1 hour. It is recommended for running resource-intensive tasks such as CESM and WRF builds or any compiles with three or more threads.

Reminder: Use of the Cheyenne login nodes, as noted here, is restricted to running processes that do not consume excessive resources. This is to ensure an appropriate balance between user convenience and login node performance. Users are encouraged to compile on the Cheyenne batch nodes or on the Geyser or Caldera clusters, depending on where they want to run their programs.

Jan. 19, 2018

The CISL Help Desk and Consulting Office will be closed Friday from 11:30 am - 2:00 pm for a USS function. For assistance with any urgent issues, call 303-497-2400 or email cislhelp@ucar.edu both of which are always monitored.

Jan. 16, 2018

Geyser_Caldera downtime: Tuesday, January 16 from 8:00 am - 8:00 pm MST

No downtime: Cheyenne, GLADE and HPSS

Jan. 16, 2018

The Geyser and Caldera clusters will be unavailable from 8 a.m. to 8 p.m. MST on Tuesday, January 16, to allow CISL staff to update hardware and software components.

Users will be unable to log in to Geyser and Caldera during the outage. Reservations will be put in place on batch jobs before the outage begins. After the reservations are activated, jobs that are submitted with specified job times that overlap the reservation period will remain on hold until the systems are restored to service. All processes and running jobs that have not finished when the outage begins will be killed and will need to be resubmitted after the systems are returned to service.

Users will be informed via the CISL Notifier service when the systems are returned to production.

Jan. 16, 2018

The Geyser and Caldera clusters will be unavailable from 8 a.m. to 8 p.m. MST on Tuesday, January 16, to allow CISL staff to update hardware and software components.

Users will be unable to log in to Geyser and Caldera during the outage. Reservations will be put in place on batch jobs before the outage begins. After the reservations are activated, jobs that are submitted with specified job times that overlap the reservation period will remain on hold until the systems are restored to service. All processes and running jobs that have not finished when the outage begins will be killed and will need to be resubmitted after the systems are returned to service.

Users will be informed via the CISL Notifier service when the systems are returned to production.

Jan. 15, 2018

A few slots remain open for the NCL Workshop, February 6-9, 2018, at NCAR’s Center Green Campus in Boulder.

The workshop will include introductory lectures on NCL, scientific data formats, and graphics, and daily hands-on labs.

During the labs, instructors will work with students to help them write NCL programs for analyzing their own data. The registration deadline is January 15.

Jan. 15, 2018

A few slots remain open for the NCL Workshop, February 6-9, 2018, at NCAR’s Center Green Campus in Boulder.

The workshop will include introductory lectures on NCL, scientific data formats, and graphics, and daily hands-on labs.

During the labs, instructors will work with students to help them write NCL programs for analyzing their own data. The registration deadline is January 15.

Jan. 9, 2018

No downtime: Cheyenne, Geyser, Caldera, GLADE and HPSS

Pages