Performance Tuning of Vlasov Code for Space Plasma on the K Computer
Performance Tuning of Vlasov Code for Space Plasma on the K Computer
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DOI：
10.1007/978-3-662-45289-9_12
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发表时间：
2014-10
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影响因子：
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通讯作者：
T. Umeda;K. Fukazawa
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文献类型：
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作者：
T. Umeda;K. Fukazawa
空间等离子体是一种无碰撞、多尺度、高度非线性的介质。因此，计算机模拟是必不可少的空间等离子体的充分理解。在本研究中，我们开发了一个高性能的并行Vlasov（无碰撞玻尔兹曼）模拟程序，这是无碰撞空间等离子体的第一原理方法。代码的性能调优已经在各种超级计算机系统上进行，例如K计算机、FX 10和CX 400超级计算机系统。在这些系统上实现了超过15%的性能效率。
Space plasma is a collisionless, multi-scale, and highly nonlinear medium. Thus computer simulations are essential for full understanding of space plasma. In the present study, we develop a high-performance parallel Vlasov (collisionless Boltzmann) simulation code which is the first-principle method for collisionless space plasma. The performance tuning of the code has been made on various supercomputer systems such as the K computer, FX10 and CX400 supercomputer systems. The performance efficiency of more than 15% is achieved on these systems.