![]() “There were a couple of parametres I did tweak at the beginning, like how much data you could read or write at one time, and how the boundaries would change as it got bigger,” says Iwao.Īs the calculations became increasingly complex, the greater the strain it was on the virtual machines, and the more time it took. That data is then copied and saved externally, on other discs, as snapshots. “Y-cruncher, and Google Cloud, both have these methods of making copies – so it’s like photocopying at certain points, and I set it up so that you can take copies of these disks instantly without stopping the calculation,” says Iwao. Just one crash – even for a couple of minutes – could have jeopardised the whole process. ![]() In this case, you need a lot of storage.” She also set up a monitoring system, which would alert her if something had gone wrong – for example, if one of her virtual machines had suddenly crashed. “So, with pen and paper, you need a lot of sheets of paper. “You can’t take a nap and then start over when you’re doing it by hand, so you have to store all the data necessary to do the math,” says Iwao. Just like a calculation by hand, or on a whiteboard, every step had to be clearly visible, something which would only be possible if the cloud kept the program continuously running. In order to make sure nothing went wrong, the virtual machines had to be running constantly.
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