CUG 2023 Local Arrangements

In the interest of the public health of all attendees, the Cray User Group and CUG 2023 will follow all local health guidelines.  There is an expectation that the majority of attendees will be fully vaccinated, but there is no explicit requirement to demonstrate this as part of your registration and attendance.

Please note: If an individual develops signs or symptoms of COVID, they shall not attend any portion of any conference event and must immediately leave the Conference venue.  Symptomatic individuals must confirm receipt of a negative PCR COVID test before being allowed to return.  It is the responsibility of the symptomatic individual to obtain the necessary US Food and Drug Administration (FDA)-approved test.  Failure to report symptoms will result in exclusion from the event.


The conference will be held at the Clarion Hotel Helsinki, Tyynenmerenkatu 2 00220 Helsinki , Finland

Conference Office and Registration

Badges and registration materials will be available at the CUG registration desk located on the 2nd floor of the Clarion Hotel. Registration will also be available during the Sunday welcome reception at the Clarion’s main bar – The Living Room, 6:00pm – 7:30pm. The Living Room is located on the Ground Floor of the main hotel building.

Sunday:  3:00 p.m. to 6:00 p.m, CUG registration desk
Sunday: 6:00 p.m. to 7:30 p.m, The Living Room
Monday:  7:30 a.m. to 5:30 p.m, CUG registration desk
Tuesday: 7:30 a.m. to 10:30 a.m, CUG registration desk

To register after Tuesday morning visit the CUG office, located in Brygga on the 2nd floor of the conference centre within the Clarion Hotel..

All attendees must wear badges during CUG Conference activities.

Smoking Policy

There is no smoking allowed at the Conference.

Special Assistance

Any requests for special assistance during the conference should be noted on the “Special Requirements” area of the registration form. You may also contact the Local Arrangements Committee.

Conference Program Overview and Social Events
  • In January 2023, detailed information will be available in the CUG2023 Technical Program as well as the Mobile Guidebook.

Sunday, May 7

  • XTreme SIG meeting (XTreme members only) 
  • Welcome Reception – From 18:00-20:00 (6 to 8:00 p.m.) All attendees and their guests are invited to a welcome reception at the Clarion’s main bar – The Living Room. The Living Room is located on the Ground Floor of the main hotel building.

Monday, May 8

  • Half- and Full-Day Tutorials; Birds of a Feather (BoF) Sessions (early evening)

Tuesday, May 9

  • Conference keynote, plenary sessions, technical paper presentations, and BoFs
  • HPE Networking Event – From 18:00-21:00 (6 to 9 p.m.) HPE will host their Networking Event at a location TBA.  All registered attendees and their guests are welcome to attend.

Wednesday, May 10

  • Plenary sessions, best paper presentation, technical paper presentations, and BoFs
  • CUG Night Out – From 18:15-22:00 (6:15 to 10 p.m.) CUG and Intel welcome you to the CUG Night out at Saaristo. Saaristo is located on the Klippan Island which is a short ferry ride from the Clarion Hotel. More details on logistical arrangements and menu will be shared nearer the time. an event location TBA. All registered attendees and guests with a paid CUG night out ticket are welcome to attend.

Thursday, May 11

  • Technical paper presentations, and plenary sessions
Local area attractions
Hotel Information

The Clarion Hotel Helsinki is located in the new Jätkäsaari (Busholmen) urban investment district in the central West Harbour area.


To make your reservation at The Clarion, please call +358 10 850 3820 or emailreservations.cl.helsinki@choice.fl. The in-House Sales Office is open Monday – Friday 08:00 – 18:00 (EEST). Please ensure you state you are part of the CUG 2023 group to ensure you get the agreed rate of €190 for a standard room (single occupancy) or €215 for a superior room (single occupancy) (these rates include tax, buffet breakfast, internet access and access to the fitness centre, sauna and swimming pool). We have negotiated these rates to be available from 5 May 2023 through to 23 May 2023. Any nights outside of these dates will be offered at current hotel rate.

You will be required to provide the following details in order to confirm your reservation:

  • Full Guest Name
  • Arrival and Departure Dates
  • Credit Card details for guarantee
  • Email address
  • Telephone number

Each guest reserves and pays for own accommodation and the room account is to be settled directly with the hotel prior to departure.

Check in is from 3pm and check out is 12pm on date of departure. All reservations must be made prior to 20 April 2023 and all rooms are on an availability basis.