Stadium, arena, engineering marvel, excess, extravagance… honestly, it does not matter. The Las Vegas Sphere has been operational for almost ten months, and it still amazes us. However, there is a question that keeps coming up: How does it work? What kind of hardware can move that army of LEDs? The answer comes through a small entry on Nvidia's official blog The green giant of Santa Clara not only offers its best in graphics, but also handles data processing, overall connectivity, and streaming.
A Brief History
According to history, the MSG Sphere project began in February 2018, thanks to an agreement between the Madison Square Garden Company and Las Vegas Sands Corporation. The original estimated cost was about $1.2 billion, but the effects of the pandemic, chip shortage, and rising US inflation turned that number into $2.3 billion. In other words, the Sphere is the most expensive entertainment project in Las Vegas history, surpassing even Allegiant Stadium (where Super Bowl LVIII was played).
Millions of LEDs, and Nvidia Hardware
The exterior is what is known as the Exosphere, and it consists of a total of 1.23 million LED "discs" or "pucks", each equipped with 48 diodes, separated by a distance of 20 centimeters (other sources say 22.8 cm). But even more impressive is the interior screen, made up of 64,000 LED panels that together create a 16K x 16K configuration, the largest of its kind on the planet. If we add a total of 167,000 speakers, amplifiers, and processing channels with beamforming capability, the Sphere delivers a unique experience.
But none of that would be possible without background hardware, and that's where Nvidia comes in. Its blog explains that the Sphere uses approximately 150 Nvidia RTX A6000 cards, each with 48 gigabytes of GDDR6 memory, ECC correction, and a TDP of 300 watts (if you're interested, it's a $4,500 GPU).
For connectivity, Nvidia BlueField data processing units also come into play, Nvidia ConnectX-6 Dx NICs with a maximum speed of 400 gigabits per second, the Nvidia DOCA Firefly Service (provides PTP assistance to BlueField), and the Rivermax SDK for streaming platforms. All this is necessary for perfect synchronization, and Nvidia mentions a precision of "sub-microsecond".
Sources: Nvidia, Hackaday
