An email notice to this effect was sent out to all members of the ARC user's group on October 20th. Here is a reminder:
We will have an outage on TinkerCliffs and Infer on Tuesday, November 2 from 4-8am so that network engineering can conduct critical updates to the switches that connect the Steger data center to the rest of campus. Cascades, DragonsTooth, and Huckleberry will remain operational during this time. We apologize for any inconvenience that this may cause.
If a job is held in the queue in a pending state with reason: (ReqNodeNotAvail, Reserved for maintenance), the reservation of nodes in advance of the outage is the cause. You may leave your job in the queue and it will run when nodes are released from reservation after the maintenance.
Starting today, ARC's documentation is being migrated to a new site. The links in the menus above have been updated to reflect the move. Longer-term, the rest of ARC's website will be redesigned and simplified to provide higher-level information about ARC's mission and services.
The documentation is now based around ReadTheDocs and Sphinx, tools designed specifically for documentation. Leveraging these tools should make it more tractable to keep our documentation updated and complete.
This year, Advanced Research Computing (ARC) is hosting Virtual Open House sessions during "welcome week", August 16-20th. At these times, ARC personnel will be available via Zoom to introduce faculty, students, and researchers to the resources and services provided by ARC.
Here is the schedule:
Monday, August 16, 2021
Tuesday, August 17, 2021
Tuesday, August 17, 2021
Wednesday, August 18, 2021
Thursday, August 19, 2021
Thursday, August 19, 2021
Friday, August 20, 2021
The Zoom links for the sessions are available on ARC's calendar which also has ARC's Office Hours schedule for those needing additional information or support using ARC's systems.
ARC is hosting virtual office hours each weekday via Zoom. Come join us to have a one-on-one dialog to get a broad overview of ARC, troubleshoot a tricky problem, or design your jobs. No registration is required and a calendar is posted above with the schedule and Zoom links.
We have expanded our Intro to ARC courses into a sequence of six 75 minutes courses to allow more time to dive into the some of the major aspects of using ARC systems at Virginia Tech:
Date and Time
Systems and Services Overview
Wednesday, May 26 1:00-2:15
Monday, June 1, 11:00-12:15
Linux/BASH for HPC
Monday, June 15, 1:00-2:15
Running Jobs with SLURM
Thursday, July 1, 9:00-10:15
Monday, July 13, 10:00-11:15
Monday, July 27, 11:00-12:15
The content for these courses will be tailored specifically to ARC\'s systems and follow in the spirit of these in-development HPC Carpentries lessons which you may find helpful as a self-guided introduction to understand and interact with current standard high-performance computing systems: https://carpentries-incubator.github.io/hpc-intro/
\"The Carpentries\" are an open content set of lessons that teach \"foundational coding and data science skills to researchers worldwide.\" Virginia Tech has an actively growing community of certified instructors who conducts many workshops based on the carpentries lessons each year.
ARC is proud to announce the release of a new cluster called Infer, which provides 18 Intel Skylake nodes each equipped with an Nvidia T4 GPU. The cluster’s name "Infer" alludes to the AI/ML inference capabilities of the T4 GPUs derived from the "tensor cores" on these devices. We think they will also be a great all-purpose resource for researchers who are making their first forays into GPU-enabled computations of any type. For more information about the T4 architecture on T4 architecture and performance relative to, e.g., V100 GPUs, see the following pages:
Cluster details and examples are provided on our Infer page. Users may login at infer1.arc.vt.edu and try it out at their earliest convenience. For now, software installs are mostly limited to CUDA and associated toolchains; if users have additional requests please, they may submit them via Help ticket.
As part of her Environmental Design class, Professor Katie Meaney teaches about the dialogue between objects and their context. Here, a famous Bauhaus sculpture is transported (along with the users) to new locations and novel dialogues. Rendered in X3D in the Virginia Tech Visionarium Lab's 27.4 million stereo pixel HyperCube.
Tinkercliffs, ARC's most recent cluster, is online and is making news owing to its scale (more than 300 nodes and almost 42,000 CPU cores) and some of the challenges the acquisition and commisioning faced in the COVID-19 era.
As of early October, access to the cluster is provided though a consultation with an ARC computational scientist. You may reach out to one of the team directly or submit a ticket requesting a consultation via arc.vt.edu/support.
ARC's Visionarium Lab provides world-class support for Viriginia Tech researchers using Virtual and Mixed Reality Visualization. Here is a highlight from the Building and Construction Department taking advantage of the unique HyperCube instrument:
S. Hasanzadeh, N. F. Polys and J. M. De La Garza, "Presence, Mixed Reality, and Risk-Taking Behavior: A Study in Safety Interventions," in IEEE Transactions on Visualization and Computer Graphics. doi: 10.1109/TVCG.2020.2973055
Dr. Hasanzadeh will be joining Purdue's Civil Engineering Faculty this Fall! Congratulations!!
Abstract: Immersive environments have been successfully applied to a broad range of safety training in high-risk domains. However, very little research has used these systems to evaluate the risk-taking behavior of construction workers. In this study, we investigated the feasibility and usefulness of providing passive haptics in a mixed-reality environment to capture the risk-taking behavior of workers, identify at-risk workers, and propose injury-prevention interventions to counteract excessive risk-taking and risk-compensatory behavior. Within a mixed-reality environment in a CAVE-like display system, our subjects installed shingles on a (physical) sloped roof of a (virtual) two-story residential building on a morning in a suburban area. Through this controlled, withinsubject experimental design, we exposed each subject to three experimental conditions by manipulating the level of safety intervention. Workers' subjective reports, physiological signals, psychophysical responses, and reactionary behaviors were then considered as promising measures of Presence. The results showed that our mixed-reality environment was a suitable platform for triggering behavioral changes under different experimental conditions and for evaluating the risk perception and risk-taking behavior of workers in a risk-free setting. These results demonstrated the value of immersive technology to investigate natural human factors.
Virginia Tech and the Web3D Consortium hosted a one-day workshop to provide presentations to Naval enterprise leaders on the use of collaborative Web-based #X3D visualization techniques by Government, Academia, and Industry practitioners. Virginia Tech's Advanced Research Computing (ARC) and Center for Geospatial Information Technology (CGIT) host with proven, innovative methods for data fusion and interactive 3D visualization.
Friday, 2019, December 6 (All day): Virginia Tech Executive Briefing Center, 900 N Glebe Rd, Arlington, VA 22203. Falls Church room.
The workshop fostered networking and showcased current and emerging capabilities for enterprise-scale, networked geo-enabled 3D communications. Increasing shared understanding and technical coordination agility can be feasibly adapted to improve digital connectedness, accelerate consensus/decision making processes across systems engineering, advance planning conceptualization, and collaborative virtual rehearsal for ashore & afloat logistics activities. Building shared priorities adds value for everyone. Workshop participants discussed their reactions "around the room" together, sharing ideas about opportunities and potential synergies that can further the art of the possible to realize shared innovation.
The workshop showcased the benefits and strengths of using the Web3D Consortium’s Extensible 3D (X3D) open 3D standards for the WWW and included:
Demonstrations using 3D scanners, 3D software & 3D data storage, and processing proved compelling use cases for how the X3D standard can enable new realities of collaborative 3D visualization for you
Overview of Web3D Standards and their value proposition in the ecology of 3D data representations and file formats
Appreciation of the long-game of technology and information systems investments: born out with this open International Standard (ISO-IEC) and WWW community, including dozens of tools, pipelines, and engines.
Presentations from the workshop are available at the link below.