Hi,
IBM Unveils Summit, the World's Fastest Supercomputer (For Now)
RHEL powered Supercomputer;
Quote:
By Sean Michael Kerner (Send Email) Posted June 8, 2018
The U.S. is once again home to the most powerful computer in the world. The U.S. Department of Energy on June 8 showed off the new IBM-built Summit supercomputer, boasting 200 petaflops of computational power.
The Summit supercomputer has a staggering 9,216 IBM Power9 CPUs s its compute base. The CPUs are 
further accelerated by 27,648 NVIDIA Tesla GPUs, providing even more computation power. The interconnect is also fast with 25 gigabits per second of interconnect between nodes, powered by Mellanox's Infiniband. The system is attached to 250 petabytes of storage.
The operating system running on top of all that power is Red Hat Enterprise Linux (RHEL).
"The compute resources required by Summit and its workloads go well beyond how we would normally talk about flexibility and scalability for IT operations," Red Hat CTO Chris Wright wrote in a blog post.
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Very interesting article and showing that we can truly lead in the supercomputer field again while using a Linux OS.
I worked with the early Cray at University Of Illinois and it was the leader at that time. Long before Gnu/Linux since it was just evolving.
UNIX was the lead OS with SunOS starting to emerge into the University environment. Post processing was the main use of the supercomputer at that time for data analysis and computational modeling.
Hope this helps.
Have fun & enjoy!
IBM Unveils Summit, the World's Fastest Supercomputer (For Now)
