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News · Written in Hall A

Engineering logs, company news and what the weather did to the hall this week. Every other Thursday.

Narvik now
Outside−4.2°C
PUE1.08
Hydro98.7%
Notes32 since 2025
NextThu, Oct 15
Press kitPDF · 4 MB
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01⁠FeaturedThis fortnight's long read

One note a fortnight goes deep. This one is about the decision that shaped the whole building.

One note a fortnight goes deep. This one is about the decision that shaped the whole building.

Featured

Engineering

6

min read

Why we cool with air, not water

Hall A has no chillers and no cooling towers. Outside air at 69° N does the work and uses zero litres of water. Here is how, and where it gets hard.

Ravi Menon

Head of Engineering

Read the note
02⁠All notesNewest first

All

Field notes

Engineering

Company

Press

Engineering

Why we cool with air, not water

Why we cool with air, not water

6

min

→

Company

Nordlys raises $48M Series A to build N-02 in Kiruna

Nordlys raises $48M Series A to build N-02 in Kiruna

3

min

→

Engineering

Checkpointing 1,024 GPUs in under 40 seconds

Checkpointing 1,024 GPUs in under 40 seconds

7

min

→

Field notes

Twelve months at 99.995%: a year inside Hall A

Twelve months at 99.995%: a year inside Hall A

5

min

→

Press

Tensorfield moves frontier training to Narvik

Tensorfield moves frontier training to Narvik

2

min

→

Field notes

Midnight sun, zero chillers: summer in the hall

Midnight sun, zero chillers: summer in the hall

4

min

→

Company

B300 pods are now bookable for Q1 2027

B300 pods are now bookable for Q1 2027

2

min

→

03⁠NewsletterThe Narvik letter

New field notes, capacity windows before they are public, and the month's PUE. Read by engineers at Tensorfield, Helix AI and Kernel.

First Thursday of the month

Q1 2027 B300 allocation, first

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