Joab Jackson
Everyone loves a bargain, even in the IT industry.
Following a beta period launched in May, Google has made its
low-cost "preemptible" virtual machines available as a full commercial
offering.
The Google Compute Engine Preemptible Virtual Machines
can cost 70 percent less than regular VMs on the Google Cloud Platform,
with the stipulation that Google can shut down these machines at any
time.
Google offers these VMs using the leftover capacity within
their data centers. A VM can act as a virtual server, one that contains
an operating system, application and support libraries.
Despite
their tenuous nature, the preemptible VMs can be useful for a number of
different workloads, especially batch processing jobs that aren't time
sensitive and distributed jobs that don't rely on a single VM to
complete operations.
One company already taking advantage of this service is
high-performance computing services provider Cycle Computing, which used
the preemptible VMs to set up a system on behalf of one of its clients,
Broad Institute.
The cancer research center deployed a workload across more than 51,200 preemptible VMs
to study mutations in more than 1.4 million cancer cells, to learn
through machine learning how they may be similar to other cancer-driven
mutation of cells.
By spreading out the workload across so many VMs, Broad
Institute was able to complete the job in six hours, as opposed to the
six weeks the job would have required otherwise, according to Cycle
Computing.
The Google service has also been used for financial
modeling, media transcoding, manufacturing design, big data analysis,
and Web crawling, according to Google.
The budget service is similar to Amazon Web Service's Spot
Instances, also designed for jobs that can be interrupted. AWS' model
is different because its price can fluctuate according to demand,
whereas Google's prices are fixed.
Google did not indicate how often the preemptible VMs have been abruptly terminated, though in a blog post announcing
the full release, Paul Nash, who is the Google senior product manager
for the Google Compute Engine, hinted that they are less likely to be
killed on nights and weekends.
When a preemptible VM is about to be shut down, Google sends
a 30-second warning to the VM to get its affairs in order for its
imminent demise. The VM cannot be enabled to restart automatically, nor
does Google offer any guarantee that preemptible VMs will always be
available.
Preemptible VMs start at US$0.015 per hour. The VMs are also part of a 30-day free trial Google offers for its cloud services.
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