MPI-2 IO 学习笔记

学习内容：MPI2 standart ，
资料来源：http://www.mpi-forum.org/docs/mpi2-report.pdf

要点：MPI2 IO 标准
etype 基本类型
filetype 由一个或多个etype组成，中间允许由空洞

displacement：以字节为单位，从文件第一个字节开始
offset：以etype为单位，从displacement开始
view：文件视图？现在还不是很理解，详见Page 232, Figure9.3

Data access routines:
Data is moved between files and processes by issuing
read and write calls. There are three orthogonal aspects
to data access:
1. positioning (explicit offset vs. implicit file pointer),
2. synchronism (blocking vs. nonblocking and split collective), and
3. coordination (noncollective vs. collective).

重点要掌握P220 的那张data access routines列表，非常详尽。