2nd Annual PowerStack Seminar

June 12-14, 2019

Leibniz-Rechenzentrum der Bayerischen Akademie der Wissenschaften
Boltzmannstraße 1
85748 Garching

First Day Logistics

On the first day, please arrive to the main entry of LRZ by 8:45AM. We will start the seminar at 9AM.

If arriving by train, stop at Garching-Forschungszentrum. If arriving by bus, stop at Boltzmannstraße. From there, follow the paths to the LRZ computer center. For more information, please see: https://www.lrz.de/wir/kontakt/weg_en.

In the main entry of LRZ, you will see signs guiding you to the reserved rooms for the “PowerStack Seminar“ (the rooms are directly near the main entry).


The current agenda is below. There will be coffee breaks and on-site lunch provided each day.

Date/Time Goals Topics
Start Time: 9AM
Recap previous year’s seminar and past year activities, ideas on current implementations, working groups catch up on the status Morning (coffee break 11AM):
  • Welcome and introduction of all attendees
  • Current status report
  • Comparison of existing layers and technologies: discuss implementation challenges, focus on interoperability with other layers of the stack
Lunch: 1PM

Afternoon (coffee break 3:30PM):
  • WG-specific meetings: identify specific challenges within each layer, review responses to questionnaire
Planned Activity: Tour of LRZ Computer Facility
13.06.2019 Identify engineering challenges and discuss implementations of interfaces among different layers of the software stack Morning:
  • Updates from previous day's WG meetings
  • Role of human actors in the stack (site/system admins & end-users/app developers): site policies for accounting, application mark-ups
  • Interoperability between each WG: discuss inputs/outputs, communication, privileges, responsibilities/ownership
Planned Activity: Seminar Dinner/Social Event (transportation provided)
14.06.2019 Determine commitments from each WG for a deliverable(s), identify long-term directions Morning:
  • Identify the next steps based on unresolved questions from Day 2
  • Assign short-term tasks for WGs: identify stakeholders for prototypes, tasks for post-seminar
  • Discuss long-term future directions of the PowerStack: validation/compliance of PowerStack-compatible systems, incorporating PowerStack designs within system procurement proposals


Due to plenty of options around LRZ, we won’t be blocking any hotel rooms for the seminar (unlike last year). Please feel free to choose your own hotels. Some pointers are listed below.

It is recommended to choose a hotel in:


The Raitenhaslach Seminar on “The HPC PowerStack: Enabling Efficient Power Management in High-Performance Computing through Hierarchical Design” was held from June 20-22, 2018 in Raitenhaslach, Germany. Continuing from last year, we are organizing the Second Annual PowerStack Seminar to continue this effort forward. While the monastery location from last year is not available this time, we would still like to stick with the same geographic area. And so, this year, the Leibniz Supercomputing Centre (LRZ) in Munich has graciously offered to host us.

While we have not been able to spin up the working groups to the extent we had hoped, the overall initiative has gained steady and significant traction across members of the labs, vendors, and academia. In accordance to this, we would like to organize a second face-to-face meeting – with the hope of turning this into an annual event – for sharing status updates from all community partners, revisiting unresolved research questions, continuing ongoing discussions on software interoperability, and extending further collaborations across the PowerStack community.

Some recent news: As you are aware, over the past quarter, the core committee has been heads-down with event proposals for ISC and SC. While we are still waiting for results of other submissions, we are happy to announce that the ISC’19 committee has accepted our proposal for – “The First Annual Workshop for HPC PowerStack”. Unlike traditional workshops that solicit paper submissions and include a series of back-to-back presentations, this full-day workshop will be unique in that it will be highly interactive. This will give us an opportunity to interact with and obtain feedback from the broader external community attending the ISC conference in Frankfurt from June 16-20, 2019. ** Note, however, that the ISC workshop mentioned above will not – by any means – be a replacement of this more focused, hands-on, three-day, face-to-face seminar scheduled the week prior to ISC @LRZ from June 12-14, 2019. We hope that the dates for this seminar will make it convenient for many of you who are planning on attending the conference as well.

Now that the back-to-back proposal deadlines are simmering down, we’d like to resume our topic-specific working group discussions in the coming weeks. As a reminder, there was a general consensus to split this collaboration into three separate working groups – each group contributing to a specific layer of the stack. The exact structure for the face-to-face meeting would depend on how much work we all get done over the coming months before June. In the upcoming weeks, please expect further notifications about contributing to these groups. In the meantime, we suggest subscribing to one or more of the mailing lists/forums listed at the end of this email.

Once again, we hope that you’d join us all at the HPC PowerStack face-to-face to continue our fruitful discussions (whilst enjoying the splendor of Bavaria in the month of June). Please feel free to direct your RSVP to Sid Jana at siddhartha.jana@intel.com.


The HPC PowerStack core team [ Martin Schulz (LRZ, TUM), Masaaki Kondo (RIKEN, Univ of Tokyo), Barry Rountree (LLNL), Tapasya Patki (ECP, LLNL), Siddhartha Jana (EEHPC-WG, Intel), Carsten Trinitis (TUM), Ryuichi Sakamoto (Univ. of Tokyo), Aniruddha Marathe (LLNL), Jonathan Eastep (Intel), Christopher Cantalupo (Intel), Matthias Maiterth (LMU, Intel), Josef Weidendorfer (TUM) ]

Please save the following dates – Date: June 12 (Wednesday) through June 14 (Friday), 2019 – Venue: LRZ (Leibniz Supercomputing Centre) in Garching near Munich, Germany. – Registration fee for covering the daytime food expenses: Around 100 Euros total for all three days


To RSVP, please email Sid Jana at siddhartha.jana@intel.com.

The registration fee will cover on-site lunch for all three days, coffee breaks, and a social event on June 13, 2019.

The registration link is live! Register here.

Seminar Location

Leibniz-Rechenzentrum der Bayerischen Akademie der Wissenschaften
Boltzmannstraße 1
85748 Garching

Getting to/from LRZ

Web resources to find a hotel