Why HPE is Sending a Supercomputer to The ISS on SpaceX’s Next Rocket - Sundiata Tech


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Friday, August 11, 2017

Why HPE is Sending a Supercomputer to The ISS on SpaceX’s Next Rocket

Hewlett Packard Enterprise is sending a supercomputer to the International Space Station aboard SpaceX’s next resupply mission for NASA, which is currently set to launch Monday.

Officially named the “Spaceborne Computer,” the Linux-based supercomputer is designed to serve in a one year experiment conducted by NASA and HPE to find out if high performance computing hardware, with no hardware customization or modification, can survive and operate in outer space conditions for a full year – the length of time, not coincidentally, it’ll likely take for a crewed spacecraft to make the trip to Mars.

Typically, computers used on the ISS have to be “hardened,” explained Dr. Mark Fernandez, who led the effort on the HPE side as lead payload engineer. This process involves extensive hardware modifications made to the high-performance computing (HPC) device, which incur a lot of additional cost, time and effort. One unfortunate result of the need for this physical ruggedization process is that HPCs used in space are often generations behind those used on Earth, and that means a lot of advanced computing tasks end up being shuttled off the ISS to Earth, with the results then round-tripped back to astronaut scientists in space.

This works for now, because communication is near-instantaneous between low-Earth orbit, where the ISSS resides, and Earth itself. But once you get further out – as far out as Mars, say – communications could take up to 20 minutes between Earth and spaceship staff. If you saw The Martian, you know how significant a delay of that magnitude can be.

[caption id="attachment_233805" align="alignnone" width="300"] The SpaceX Falcon 9 rocket, with the Dragon spacecraft onboard, launches from pad 39A at NASA’s Kennedy Space Center in Cape Canaveral, Florida, Saturday, June 3, 2017. Dragon is carrying almost 6,000 pounds of science research, crew supplies and hardware to the International Space Station in support of the Expedition 52 and 53 crew members. The unpressurized trunk of the spacecraft also will transport solar panels, tools for Earth-observation and equipment to study neutron stars. This will be the 100th launch, and sixth SpaceX launch, from this pad. Previous launches include 11 Apollo flights, the launch of the unmanned Skylab in 1973, 82 shuttle flights and five SpaceX launches. Photo Credit: (NASA/Bill Ingalls)[/caption]

“Suppose there’s some critical computations that need to be made, on the mission to Mars or when we arrive at Mars, we really need to plan ahead and make sure that that computational capacity is available to them, and it’s not three- or five-year old technology,” Dr. Fernandez told me. “We want to be able to get to them the latest and greatest technology.”

This one-year experiment will help Dr. Fernandez hopefully show that in place of hardware modifications, a supercomputer can be “software hardened” to withstand the rigors of space, including temperature fluctuations and exposure to radiation. That software hardening involves making adjustments on the fly to things like processor speed and memory refresh rate in order to correct for detected errors and guarantee correct results.

“All of our modern computers have hardware built error correction and detection in them, and it’s possible that if we give those units enough time, they can correct those errors and we can move on,” Dr. Fernandez said.

Already on Earth, the control systems used to benchmark the two experimental supercomputers sent to the ISS have demonstrated that this works – a recent lightning storm struck the data center where they’re stationed, causing a power outage and temperature fluctuations, which did not impact the results coming from the HPCs. Dr. Fernandez says that’s a promising sign for how their experimental counterparts will perform in space, but the experiment will still help show how they can react to things you can’t test as accurately on Earth, like exposure to space-based radiation.


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