并行计算？ openmp 或 mpi [关闭]

Question

一条长长的地下隧道已经建成，穿过一座山。由于困难重重 地形，隧道必须很窄，宽度刚好能容纳一个人 车辆。此外，由于隧道的某些部分在非常深的峡谷上有桥梁，因此决定 任何时候都只让一辆车进入隧道。隧道的每一端都有一个控制器

规范进入隧道并跟踪车辆从隧道的出口。写一个多 线程程序来模仿这个系统。假设，任何时候都有随机数量的车辆

出现在入口处。

混淆是使用openmp或mpi，如果可能的话，如果有人可以请提供解决方案

Answer 1

MPI 专为大规模、多节点应用程序而设计。因此，在我看来，您的问题不足以保证使用 MPI。此外，与 MPI 中的进程相比，使用线程（可以在 OpenMP 等模型中动态创建）更好地表达它的性质。

最后，OpenMP 主要面向“工作共享”：将一些批量任务分配给可用线程/内核。您的应用程序感觉有些不同。虽然它可以通过 OpenMP 任务实现，但 pthread 或 C++ 线程等线程模型可能更合适。

Answer 2

现在由你决定，我查了他们两个，这是我找到的解释：

OpenMP

OpenMP is typically used for loop-level parallelism, but it also supports function-level parallelism. 
This mechanism is called OpenMP sections. 
The structure of sections is straightforward and can be useful in many instances. 
Consider one of the most important algorithms in computer science, the quicksort.

OpenMPI

Open MPI (based on Message Passing Interface) is also a programming platform, but instead provides one the ability to parallelize code over a (non-)homogenous distributed system (e.g., a supercomputer). 
For instance, it's possible to parallelize an entire program over a network of computers, or nodes, which communicate over the same network. 
Since these nodes are essentially computers, they have their own memory layout and their own set of cores (see OpenMP description). 
Communication between nodes, when compared to shared memory systems, can be difficult and is usually expensive.

您可以在此处阅读更多信息Difference OpenMP vs OpenMPI

据我所知，您应该选择 OpenMP，因为他们说通信更容易。