Hierarchical Parallel Programming Model and Parallelization and Optimization Techniques Based on SMP Cluster;

Research and Application of MPI and OpenMP Hybrid Programming Model Based on SMP Clusters;

Nowadays, the most popular parallel computer architectures in the world are SMP, MPP, COW and SMP Cluster, etc.

In order to give a full play of SMP clusters,this research studied the method to improve the performance of Fox algorithm for parallel matrix multiplication exploiting optimization on single processor,OpenMP and MPI,which involves the levels of instruction,shared memory and distributed memory respectively.

Based on two-level parallel structures of SMP cluster,a two-level parallel technique is developed,which uses a Message Passing Interface MPI between the nodes and Compiler directives OpenMP inside the nodes.

On the basis of the p arallel I/O model framework based on wave-pushing type,the models of each da ta channel are built under the system architecture of SMP cluster based-linux .

Aimed at the memory hierarchy of the SMP cluster and based on both matrix tridiagonalization using Householder transform and divide-and-conquer algorithm for tridiagonal eigenproblem, their MPI+OpenMP hybrid parallel implementations are presented.

SMP cluster is a kind of novel parallel architecture.

In this paper, the development, characteristics, start-up and operational performance of ABR in treating low-strength wastewater were discussed, and the influence of Soluble Microbial Products(SMP) was also analyz.