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mpiBLAST
来源: 作者: 发布时间:2010/3/12 10:13  点击数:3188 次 

  官网:http://www.mpiblast.org/

      mpiBLAST is a freely available, open-source, parallel implementation of NCBI BLAST. By efficiently utilizing distributed computational resources through database fragmentation, query segmentation, intelligent scheduling, and parallel I/O, mpiBLAST improves NCBI BLAST performance by several orders of magnitude while scaling to hundreds of processors. mpiBLAST is also portable across many different platforms and operating systems. Lastly, a renewed focus and consolidation of the many codebases has positioned mpiBLAST to continue to be of high utility to the bioinformatics community.

      Key Features of mpiBLAST:  

1. Database fragmentation

2.Query segmentation

3.Exact NCBI e-value scores

4. Increased per-query throughput

5.Improved query response time

6. Portable across all major operating systems

7. Integrated advanced job scheduling

8.Parallel input/output

9.Fault tolerant

10.High-performance on desktops, clusters, and HPC systems 

      mpiBLAST是一个基于MPINCBI BLAST的并行实现。它由代替formatdb blastall的两个程序组成,在安装有MPI的并行计算机群集上执行BLAST作业。和传统BLAST相比,使用mpiBLAS有两个主要的好处。首先,mpiBLAST分割群集中每个节点上的数据库。由于数据库每个节点的分段越小,它就可以驻留在缓存存储器中,由于减少了磁盘I/O次数,从而大幅提高速度。其次,由于处理器相互间的通信需求低,所以它允许BLAST用户利用高效、低代价的Beowulf 群集。当数据库太大以至不能完全放在RAM中时,mpiBLAST 可以取得超线性的加速,而在一般情况下能获得线性的加速。

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