This paper is based on the researchment of Dawning super server in ICT,and uses system management of cluster operating system as researched object. The purpose of system management is to implement the configuring, man...This paper is based on the researchment of Dawning super server in ICT,and uses system management of cluster operating system as researched object. The purpose of system management is to implement the configuring, managing and monitoring resources of the whole cluster which includes all nodes. So the single entry point and single control point must be implemented,and also several problems such as cross platform must be solved. Firstly,the paper presents the ideas in designing the system management. Secondly,it discusses some key techniques that are used and implementation strategies in details. The system management is a convenient, flexible and usable tool and can also improve the work efficiency.展开更多
In a coupled map system, an attractor which seems to be strange nonchaotic attractor (SNA) is discovered for nonzero measure in parameter range. The attractor has nonpositive Lyapunov exponent (LE) and discrete struct...In a coupled map system, an attractor which seems to be strange nonchaotic attractor (SNA) is discovered for nonzero measure in parameter range. The attractor has nonpositive Lyapunov exponent (LE) and discrete structure. We call it strange-nonchaotic-attractor-like (SNA-like) behavior because the size of its discrete structure eleoreases with the computing precision increasing and the true SNA does not change. The SNA-like behavior in the autonomous system is born when the truncation error of round-off is amplified to the size of the discrete part of the attractor during the long time interval of positive local LE. The SNA-like behavior is easily mistaken for a true SNA judging merely from the largest LE and the phase portrait in double precision computing. In non-autonomous system an SNA-like attractor is also found.展开更多
文摘This paper is based on the researchment of Dawning super server in ICT,and uses system management of cluster operating system as researched object. The purpose of system management is to implement the configuring, managing and monitoring resources of the whole cluster which includes all nodes. So the single entry point and single control point must be implemented,and also several problems such as cross platform must be solved. Firstly,the paper presents the ideas in designing the system management. Secondly,it discusses some key techniques that are used and implementation strategies in details. The system management is a convenient, flexible and usable tool and can also improve the work efficiency.
文摘In a coupled map system, an attractor which seems to be strange nonchaotic attractor (SNA) is discovered for nonzero measure in parameter range. The attractor has nonpositive Lyapunov exponent (LE) and discrete structure. We call it strange-nonchaotic-attractor-like (SNA-like) behavior because the size of its discrete structure eleoreases with the computing precision increasing and the true SNA does not change. The SNA-like behavior in the autonomous system is born when the truncation error of round-off is amplified to the size of the discrete part of the attractor during the long time interval of positive local LE. The SNA-like behavior is easily mistaken for a true SNA judging merely from the largest LE and the phase portrait in double precision computing. In non-autonomous system an SNA-like attractor is also found.
