Lawrence Livermore National Laboratory researchers have performed record simulations using all 1,572,864 cores of Sequoia, the largest supercomputer in the world.
The simulations are the largest particle-in-cell (PIC) code simulations by number of cores ever performed. PIC simulations are used extensively in plasma physics to model the motion of the charged particles, and the electromagnetic interactions between them, that make up ionized matter.
Sequoia, a NNSA machine, is based on IBM BlueGene/Q architecture and is the first machine to exceed one million computational cores. It is also second on the list of the world’s fastest supercomputers, operating at 16.3 petaflops (16.3 quadrillion floating point operations per second). Sequoia preparing to move to classified computing in support of stockpile stewardship.
About the photo: OSIRIS simulation on Sequoia of the interaction of a fast-ignition-scale laser with a dense DT plasma. The laser field is shown in green, the blue arrows illustrate the magnetic field lines at the plasma interface and the red/yellow spheres are the laser-accelerated electrons that will heat and ignite the fuel.