# NERSC Weekly Email, Week of July 19, 2021 <a name="top"></a> # ## Contents ## - [Summary of Upcoming Events and Key Dates](#dates) ## [NERSC Status](#section1) ## - [NERSC Operations Continue, with Minimal Changes](#curtailment) ## [This Week's Events and Deadlines](#section2) ## - [Call for Papers: Parallel Applications Workshop, Alternatives to MPI+X](#pawatm) ## [Perlmutter](#section3) ## - [Perlmutter Machine Status](#perlmutter) - [Perlmutter Availability Access Plan](#pmaccess) ## [Updates at NERSC ](#section4) ## - [srun Behavior Change for some jobs since July 12](#srunoverlap) - [Maintenance on NERSC Help Portal & ERCAP System, July 28](#snmaint) - [E4S Version 21.02 Now Available on Cori!](#e4s) - [Cori Operating System Upgrade & New Default Enivronment Coming in September](#osupgrade) ## [Calls for Participation](#section5) ## - [Call for Participation: 8th Workshop on Accelerator Programming using Directives (WACCPD 2021)](#waccpd) - [Call for Participation: Second International Symposium on Checkpointing for Supercomputing](#supercheck) ## [Upcoming Training Events ](#section6) ## - [(NEW) Inside the NVIDIA Ampere A100 GPU in ThetaGPU and Perlmutter, July 28, 9am PT](#inside_pm_gpu) - [Four-Day CMake Training, August 23-26](#cmake) - [Using Variorum for Portable Power Management Code, August 6 & 13 or 20 & 27](#variorum) - [IDEAS-ECP Webinar on Software Engineering Challenges and Best Practices for Multi-Institutional Scientific Software Development, August 4](#ecpwebinar) - [Learn to Use Spin to Build Science Gateways at NERSC: Next SpinUp Workshop Starts August 19!](#spinup) ## [NERSC News ](#section7) ## - [No New "NERSC User News" Podcast this Week](#nopodcast) - [Come Work for NERSC!](#careers) - [Upcoming Outages](#outages) - [About this Email](#about) ## Summary of Upcoming Events and Key Dates <a name="dates"/></a> ## July 2021 Su Mo Tu We Th Fr Sa 1 2 3 4 5 6 7 8 9 10 11 12 13 14 *15**16* 17 16 Jul CUDA Training [2] 18 19 20 21 22 *23* 24 23 Jul PAW-ATM Submissions Due [1] 25 26 27 *28* 29 30 31 28 Jul Inside Perlmutter's GPUs [3] 28 Jul Help Portal Maint [4] August 2021 Su Mo Tu We Th Fr Sa 1 2 3 *4* 5 *6* 7 4 Aug IDEAS-ECP Monthly Webinar [5] 6 Aug Variorum Lecture Series [6] 8 9 10 11 12 *13* 14 13 Aug Variorum Lecture Series [6] 15 16 *17* 18 *19**20* 21 17 Aug CUDA Training [2] 19 Aug SpinUp Workshop [7] 20 Aug Variorum Lecture Series [6] 22 *23--24--25--26**27* 28 23-26 Aug ECP CMake Training [8] 27 Aug Variorum Lecture Series [6] 27 Aug WACCPD Submissions Due [9] 29 30 31 September 2021 Su Mo Tu We Th Fr Sa 1 2 3 4 5 *6* *7* 8 9 10 11 6 Sep Labor Day Holiday [10] 6 Sep SuperCheck-SC21 Subs Due [11] 7 Sep 2nd Allocation Reduction [12] 12 13 *14**15* 16 17 18 14 Sep CUDA Training [2] 15 Sep Cori Maint/OS Upgrade [13] 19 20 21 22 23 24 25 26 27 28 29 30 1. **July 23, 2021**: [PAW-ATM Workshop](#pawatm) Submissions close 2. **July 16, 2021**: [NVIDIA CUDA Training on CUDA Streams](#custreams) 3. **July 28, 2021**: [Inside Perlmutter's GPUs](#inside_pm_gpu) 4. **July 28, 2021**: [NERSC Help Portal maintenance](#snmaint) 5. **August 4, 2021**: [IDEAS-ECP Monthly Webinar](#ecpwebinar) 6. **August 6 & 13, or 20 & 27, 2021**: [Variorum Lecture Series](#variorum) 7. **August 19, 2021**: [SpinUp Workshop](#spinup) 8. **August 23-26, 2021**: [ECP CMake Training](#cmake) 9. **August 27, 2021**: [WACCPD Submissions Due](#waccpd) 10. **September 6, 2021**: Labor Day Holiday (No Consulting or Account Support) 11. **September 6, 2021**: [SuperCheck-SC21 Submission Deadline](#supercheck) 12. **September 7, 2021**: Second Allocation Reduction Date 13. **September 15, 2021**: Cori Monthly Maintenance with [OS Upgrade](#osupgrade) 14. All times are **Pacific Time zone** - **Upcoming Planned Outage Dates** (see [Outages section](#outages) for more details) - None planned this week - **Other Significant Dates** - **July 19 & 26-28, 2021**: NERSC GPU Hackathon - **August 1-13, 2021**: Argonne Training Program on Extreme-Scale Computing - **October 14 & December 9, 2021**: SpinUp Workshops - **October 20, November 17, & December 15, 2021**: Cori Monthly Maintenance Window - **November 15, 2021**: Second International Symposium on Checkpointing for Supercomputing ([SuperCheck-SC21](https://supercheck.lbl.gov/supercheck-sc21)) - **November 25-26, 2021**: Thanksgiving Holiday (No Consulting or Account Support) - **December 24, 2021 - January 3, 2022**: Winter Shutdown (Limited Consulting and Account Support) ([back to top](#top)) --- ## NERSC Status <a name="section1"/></a> ## ### NERSC Operations Continue, with Minimal Changes <a name="curtailment"/></a> Berkeley Lab, where NERSC is located, is operating under public health restrictions. NERSC continues to remain open while following site-specific protection plans. We remain in operation, with the majority of NERSC staff working remotely, and only staff essential to operations onsite. We do not expect any significant changes to our operations until October at the earliest. You can continue to expect regular online consulting and account support as well as schedulable online appointments. Trainings continue to be held online. Regular maintenances on the systems continue to be performed while minimizing onsite staff presence, which could result in longer downtimes than would occur under normal circumstances. Because onsite staffing is so minimal, we request that you continue to refrain from calling NERSC Operations except to report urgent system issues. For **current NERSC systems status**, please see the online [MOTD](https://www.nersc.gov/live-status/motd/) and [current known issues](https://docs.nersc.gov/current/) webpages. ([back to top](#top)) --- ## This Week's Events and Deadlines <a name="section2"/></a> ## ### Call for Papers: Parallel Applications Workshop, Alternatives to MPI+X <a name="pawatm"/></a> The Parallel Applications Workshop, Alternatives to MPI+X (PAW-ATM) is seeking full-length papers and extended abstracts for the workshop to be held in conjunction with SC21 in St. Louis, Missouri in mid-November. PAW-ATM is a forum for discussing HPC applications written in alternatives to MPI+X. These alternatives include new languages (e.g., Chapel, Regent, XcalableMP), frameworks for large-scale data science (e.g., Arkouda, Dask, Spark), and extensions to existing languages (e.g., Charm++, COMPSs, Fortran, Legion, UPC++). Topics of interest include, but are not limited to: - Novel application development using high-level parallel programming languages and frameworks. - Examples that demonstrate performance, compiler optimization, error checking, and reduced software complexity. - Applications from artificial intelligence, data analytics, bioinformatics, and other novel areas. - Performance evaluation of applications developed using alternatives to MPI+X and comparisons to standard programming models. - Novel algorithms enabled by high-level parallel abstractions. - Experience with the use of new compilers and runtime environments. - Libraries using or supporting alternatives to MPI+X. - Benefits of hardware abstraction and data locality on algorithm implementation. Submissions close **ths Friday July 23, 2021**. For more information and to submit a paper, please visit: <https://sourceryinstitute.github.io/PAW/>. ([back to top](#top)) --- ## Perlmutter <a name="section3"/></a> ## ### Perlmutter Machine Status <a name="perlmutter"/></a> The initial phase of the Perlmutter supercomputer is in the NERSC machine room, booting and running benchmarks successfully. We continue configuring and testing the machine. The community and home filesystems are now integrated into the machine, and we are working on hardware stabilization and maintenance, setting up and testing the software environment, and running test jobs. Preliminary [Perlmutter Documentation](https://docs.nersc.gov/systems/perlmutter/) is available and under further development. In the [Top500 list](https://top500.org/news/fugaku-holds-top-spot-exascale-remains-elusive/) released last month, Perlmutter debuted as the 5th fastest machine on the list, achieving 64.6 Pflop/s on the HPL benchmark. It also ranked as the 3rd fastest for the HPCG benchmark and the 6th most energy efficient machine. The benchmarking runs that went into these ratings helped expose and accelerate the resolution of a number of crucial issues, but more work remains to be done. This newsletter item will be updated each week with the latest Perlmutter status. ### Perlmutter Availability Access Plan <a name="pmaccess"/></a> NERSC is continuing to configure and test Perlmutter in preparation for opening the system to the broader NERSC community. We are working with a small number of application partners to identify issues and test the programming and runtime environments. Once the system is ready, users will be added in stages beginning with the early-access users as outlined at <https://docs.nersc.gov/systems/perlmutter/#access>. ([back to top](#top)) --- ## Updates at NERSC <a name="section4"/></a> ## ### srun Behavior Change for some jobs since July 12 <a name="srunoverlap"/></a> During the July 9-12 Cori maintenance the Slurm batch scheduler was upgraded from version 20.02.6 to 20.11.7. One noticeable change is that by default, `srun` steps no longer overlap with other job steps that are on the same node. This change impacts only those who run [multiple parallel jobs that share nodes](https://docs.nersc.gov/jobs/examples/#multiple-parallel-jobs-while-sharing-nodes). Users now need to add the `--overlap` flag to each `srun` command to allow the multiple steps to run simultaneously. Without the `--overlap` flag, the srun steps will run sequentially. There is no impact to users who run multiple parallel jobs simultaneously, with each job running on its own dedicated node(s). ### Maintenance on NERSC Help Portal & ERCAP System, July 28 <a name="snmaint"/></a> On July 28, NERSC will update its ServiceNow instance, which hosts the NERSC help desk and ERCAP systems. During the 8 am to noon (Pacific time) maintenance period, functionality may be intermittently unavailable. ### E4S Version 21.02 Now Available on Cori! <a name="e4s"/></a> We are pleased to announce that the E4S version 21.02 software stack is now available on Cori. E4S (the Extreme-scale Scientific Software Stack) provides popular HPC products including programming models, development tools, math libraries, and data and visualization tools. The E4S 21.02 stack on Cori contains 45 E4S packages, including Adios2, HDF5, PAPI, SLEPc, SuperLU, Tau, and UPCXX. The E4S 21.02 stack can be accessed by running `module load e4s/21.02`, which sets up a Spack environment with the available software stack. Module names are easy to type and do not contain hashes. For more information, including a complete list of all available packages, please see <https://docs.nersc.gov/applications/e4s/cori/21.02/>. Please use the NERSC [Help Desk](https://help.nersc.gov) to file a ticket with any questions or concerns. ### Cori Operating System Upgrade & New Default Enivronment Coming in September <a name="osupgrade"/></a> To continue to be in compliance with minimum requirements for support from HPE/Cray, NERSC will perform a minor version upgrade to the operating system on Cori later this year. The upgrade itself is currently expected to take only one day, but we will analyze the required steps further, and may extend the estimate if necessary. At the same time, we will also **update the default user programming environment** on Cori for the first time since January, 2020. The CDT version will change from 19.11 to **21.05**, and the Intel compiler default will change from 19.0.3.199 to **19.1.2.254**. Users will need to relink all statically compiled codes, and NERSC plans to update all NERSC-supported software to be compatible with the new operating system and CDT. This update is scheduled for the September Cori monthly maintenance. ([back to top](#top)) --- ## Calls for Participation <a name="section5"/></a> ## ### Call for Participation: 8th Workshop on Accelerator Programming using Directives (WACCPD 2021) <a name="waccpd"/></a> Exploiting the maximum available parallelism out of accelerated (CPU+GPU) systems requires refactoring and rewriting applications using a programming approach that can make effective use of accelerators. The WACCPD workshop aims to showcase all aspects of accelerator programming for heterogeneous systems such as innovative high-level language or library approaches, lessons learned while using directives or other portable approaches to migrate scientific legacy code to modern systems, and compilation and runtime scheduling techniques. Topics of interest for paper or panel submissions include (but are not limited to) - Application developers' experiences porting scientific codes to heterogeneous systems - Critical assessment of the benefits and limitations of minimal-maintenance portable programming approaches - Compiler and runtime support for current and emerging architectures - Prototypes of base language parallelism constructs for accelerators - Design and development of directives created for complex parallel patterns - Abstract handling of complex/heterogeneous memory hierarchies - Extensions to and shortcomings of current directives for heterogeneous systems - Compare and contrast high-level and lower-level abstractions with respect to performance, tuning, programmer productivity, and overall analysis - Modeling, verification, and performance-analysis tools - Auto-tuning and optimization strategies - Using non-tradititional HPC languages such as Julia or Python on heterogeneous systems - Parallel computing using hybrid programming paradigms, i.e., MPI+X - Asynchronous execution and scheduling (task-based approaches) - Scientific library interoperability with programming approaches for accelerators - Power/energy studies and solutions targeting accelerators or heterogeneous systems. For more information, please see <https://www.waccpd.org>. Submissions are due August 27, 2021. ### Call for Participation: Second International Symposium on Checkpointing for Supercomputing <a name="supercheck"/></a> You are invited to participate in the Second International Symposium on Checkpointing for Supercomputing (SuperCheck-SC21), which will be held on November 15, 2021, in conjunction with SC21. The workshop will feature the latest work in checkpoint/restart research, tools development, and production use. The call for participation is available at: <https://supercheck.lbl.gov/call-for-participation>. Submissions are due September 6, 2021. ([back to top](#top)) --- ## Upcoming Training Events <a name="section6"/></a> ## ### (NEW) Inside the NVIDIA Ampere A100 GPU in ThetaGPU and Perlmutter, July 28, 9am PT <a name="inside_pm_gpu"/></a> The **NVIDIA Ampere A100 GPU, which powers Perlmutter** and ALCF's ThetaGPU system, builds on the excellent performance of the NVIDIA V100 GPU and includes several new features for both HPC and deep learning. Particularly, tensor cores have been improved (including FP64 compute and efficient evaluation of sparse computation); the L2 cache is significantly expanded and includes new residency controls; the SMs have enhanced support for asynchronous operations involving shared memory; and the new Multi-Instance GPU feature allows true isolation of partitions of the GPU. NVIDIA has also invested significant effort in ensuring that both HPC applications and DL frameworks achieve excellent performance on A100. This talk will describe these (and other) aspects of A100 so that computational scientists can get a better idea of what is possible on this architecture. ### Four-Day CMake Training, August 23-26 <a name="cmake"/></a> ECP is partnering with Kitware, ALCF, NERSC, and OLCF to offer a four-day CMake training August 23-26. CMake is an open-source, cross-platform family of tools designed to build, test, and package software. The training is targeted at a deeper understanding of CMake, to assist developers in learning to resolve issues outside their control, and to write a build system generator capable of seamlessly configuring for multiple unique architectures with a variety of compilers. The training will take place from 9 am to 1 pm (Pacific time) Monday through Thursday, August 23-26. It will be fully virtual and use NERSC resources for exercises. The first 3 days will include lectures and hands-on exercises, and the last day will be office hours and a Q&A session. All NERSC users are welcome to attend the training. For more information, including how to register, please see <https://www.nersc.gov/users/training/events/ecp-cmake-training-aug-2021/>. ### Using Variorum for Portable Power Management Code, August 6 & 13 or 20 & 27 <a name="variorum"/></a> [Variorum](https://github.com/LLNL/variorum) is a production-grade, open-source, vendor-neutral software infrastructure for exposing low-level control and monitoring of a system's underlying hardware features that can allow users to manage power, performance, and thermal information seamlessly across hardware from different vendors. The Variorum team will provide its first Variorum Lecture Series, where attendees will learn everything necessary to start using Variorum on various platforms to write portable power management code. The Lecture Series consists of two 90-minute modules. Two sessions will be held to accommodate different time zones and attendee schedules: - Session 1: August 6 and 13, 8:30 am - 10:00 am (Pacific Time) - Session 2: August 20 and 27, 4:00 pm - 5:30 pm (Pacific Time) The sessions are free but registration is required. For more information please see <https://www.exascaleproject.org/event/variorum-class-series/>. ### IDEAS-ECP Webinar on Software Engineering Challenges and Best Practices for Multi-Institutional Scientific Software Development, August 4 <a name="ecpwebinar"/></a> The next webinar in the [Best Practices for HPC Software Developers](http://ideas-productivity.org/events/hpc-best-practices-webinars/) series is entitled "Software Engineering Challenges and Best Practices for Multi-Institutional Scientific Software Development" and will take place **Wednesday, August 4, 2021, at 10:00 am Pacific time.** This webinar, presented by Keith Beattie (Lawrence Berkeley National Laboratory), describes a set of best practices for producing impactful and trustworthy scientific software across a distributed, multi-institutional team of contributors. There is no cost to attend, but registration is required. Please register [here](https://www.exascaleproject.org/event/sebp4ssd/). ### Learn to Use Spin to Build Science Gateways at NERSC: Next SpinUp Workshop Starts August 19! <a name="spinup"/></a> Spin is a service platform at NERSC based on Docker container technology. It can be used to deploy science gateways, workflow managers, databases, and all sorts of other services that can access NERSC systems and storage on the back end. New large-memory nodes have been added to the platform, increasing the potential of the platform for new memory-constrained applications. To learn more about how Spin works and what it can do, please listen to the NERSC User News podcast on Spin: <https://anchor.fm/nersc-news/episodes/Spin--Interview-with-Cory-Snavely-and-Val-Hendrix-e1pa7p>. Attend an upcoming SpinUp workshop to learn to use Spin for your own science gateway projects! Applications for sessions that begin on [Thursday August 19](https://www.nersc.gov/users/training/spin/) are now open. SpinUp is hands-on and interactive, so space is limited. Participants will attend an instructional session and a hack-a-thon to learn about the platform, create running services, and learn maintenance and troubleshooting techniques. Local and remote participants are welcome. If you can't make these upcoming sessions, never fear! The next session begins October 14, and we'll hold an additional session in December. See a video of Spin in action at the [Spin documentation](https://docs.nersc.gov/services/spin/) page. ([back to top](#top)) --- ## NERSC News <a name="section7"/></a> ## ### No New "NERSC User News" Podcast this Week <a name="nopodcast"/></a> There will be no new episode of the "NERSC User News" podcast this week. We encourage you to instead enjoy some of our most recent episodes and greatest hits: - [NERSC 2020 in Review & Looking Forward](https://anchor.fm/nersc-news/episodes/NERSC-2020-in-Review-and-Looking-Forward-Sudip-Dosanjh-Interview-ep44l0) NERSC director Sudip Dosanjh discusses the highlights of 2020 at NERSC, as well as what to look forward to in 2021 and beyond. - [Software Support Policy](https://anchor.fm/nersc-news/episodes/NERSC-Software-Support-Policy-Steve-Leak-Interview-ehu6bg) In this interview with NERSC HPC Consultant Steve Leak, learn about the new NERSC software support policy: what it is, how it works, and its benefits for users and NERSC staff alike. - [NERSC Power Upgrade](https://anchor.fm/nersc-news/episodes/NERSC-Power-Upgrade-David-Topete-Interview-egc35v) In this interview with Berkeley Lab Infrastructure Modernization Division's David Topete, learn about the power upgrade happening this weekend, the work that has to be done, and the steps taken to ensure the safety of the workers involved in the effort. - [Dynamic fan](https://anchor.fm/nersc-news/episodes/Dynamic-Fan-Norm-Bourassa-Interview-ef4bkp) NERSC Energy Efficiency Engineer Norm Bourassa talks about how NERSC is saving energy with the dynamic fan settings on the Cori supercomputing cabinets, and what NERSC is doing to make the cabinets even more energy efficient. - [RAPIDS](https://anchor.fm/nersc-news/episodes/The-RAPIDS-Library-Nick-Becker-Interview-eb0h5a) In this interview with NVIDIA RAPIDS senior engineer Nick Becker, learn about the RAPIDS library, how it can accelerate your data science, and how to use it. - [IO Middleware](https://anchor.fm/nersc-news/episodes/IO-Middleware-Quincey-Koziol-Interview-eaf5r3/a-a1c7plt) NERSC Principal Data Architect Quincey Koziol talks about IO Middleware: what it is, how you can benefit from using it in your code, and how it is evolving to support data-intensive computing and future supercomputing architectures. - [Community File System](https://anchor.fm/nersc-news/episodes/Community-File-System-Kristy-Kallback-Rose--Greg-Butler--and-Ravi-Cheema-Interview-e9d88q/a-a149hf5) NERSC Storage System Group staff Kristy Kallback-Rose, Greg Butler, and Ravi Cheema talk about the new Community File System and the migration timeline. - [Monitoring System Performance](https://anchor.fm/nersc-news/episodes/Monitoring-System-Performance-Eric-Roman-Interview-e5g20m/a-aobd6p) NERSC Computational Systems Group's Eric Roman discusses how NERSC monitors system performance, what we're doing with the data right now, and how we plan to use it in the future. - [The Superfacility Concept](https://anchor.fm/nersc-news/episodes/The-Superfacility-Concept-Debbie-Bard-Interview-e5a5th/a-amoglk): Join NERSC Data Science Engagement Group Lead Debbie Bard in a discussion about the concept of the superfacility: what it means, how facilities interact, and what NERSC and partner experimental facilities are doing to prepare for the future of data-intensive science. - [Optimizing I/O in Applications](https://anchor.fm/nersc-news/episodes/Optimizing-IO-in-Applications-Jialin-Liu-Interview-e50nvm): Listen to an I/O optimization success story in this interview with NERSC Data and Analytics Services Group's Jialin Liu. - [NESAP Postdocs](https://anchor.fm/nersc-news/episodes/NESAP-Postdocs--Laurie-Stephey-Interview-e2lsg0): Learn from NESAP postdoc Laurie Stephey what it's like working as a postdoc in the NESAP program at NERSC. The NERSC User News podcast, produced by the NERSC User Engagement Group, is available at <https://anchor.fm/nersc-news> and syndicated through iTunes, Google Play, Spotify, and more. Please give it a listen and let us know what you think, via a ticket at <https://help.nersc.gov>. ### Come Work for NERSC! <a name="careers"/></a> NERSC currently has several openings for postdocs, system administrators, and more! If you are looking for new opportunities, please consider the following openings: - [Application Performance Specialist](http://m.rfer.us/LBLwlM3uz): Enable new advancements in bioinformatics by engaging with bioinformatics teams and developing optimized bioinformatics codes for GPU-accelerated architectures. - [HPC Storage Infrastructure Engineer](http://m.rfer.us/LBLGNw3fv): Join the team that architects, deploys, and supports high-performance parallel storage systems at NERSC. - [NESAP for Simulations Postdoctoral Fellow](http://m.rfer.us/LBL6vJ3fr): Work in multidisciplinary teams to develop and optimize codes for the Perlmutter system and produce mission-relevant science that pushes the limits of high-performance computing. - [NESAP for Learning Postdoctoral Fellow](http://m.rfer.us/LBL13A3fq): Work in multidisciplinary teams to develop and implement cutting-edge machine learning/deep learning solutions in codes that will run on NERSC's new Perlmutter supercomputer and produce mission-relevant science that pushes the limits of AI on high-performance computing. (**Note:** You can browse all our job openings by first navigating to <https://jobs.lbl.gov/jobs/search/>. Under "Business," select "View More" and scroll down to find and select the checkbox for "NE-NERSC".) We know that NERSC users can make great NERSC employees! We look forward to seeing your application. ### Upcoming Outages <a name="outages"/></a> - **Cori** - 08/18/21 07:00-20:00 PDT, Scheduled Maintenance - 09/15/21 07:00-20:00 PDT, Scheduled Maintenance - 10/20/21 07:00-20:00 PDT, Scheduled Maintenance - 11/17/21 07:00-20:00 PST, Scheduled Maintenance - 12/15/21 07:00-20:00 PST, Scheduled Maintenance - **ServiceNow (help.nersc.gov)** - 07/28/21 08:00-12:00 PDT, Scheduled Maintenance NERSC Help Portal and other ServiceNow functionality, including the ability to submit tickets, may be intermittently unavailable during this planned platform upgrade. Updates on this work will be provided via NERSC Status mailing list. - **HPSS Archive** - 07/28/21 09:00-13:00 PDT, Scheduled Maintenance - **HPSS Regent** - 07/28/21 09:00-13:00 PDT, Scheduled Maintenance Visit <http://my.nersc.gov/> for latest status and outage information. ### About this Email <a name="about"/></a> You are receiving this email because you are the owner of an active account at NERSC. This mailing list is automatically populated with the email addresses associated with active NERSC accounts. In order to remove yourself from this mailing list, you must close your account, which can be done by emailing <accounts@nersc.gov> with your request. _______________________________________________ Users mailing list Users@nersc.gov