OpenFoam中动态库与静态库链接的问题 - 悲催的科学匠人 - 冷水's blog
OpenFoam中动态库与静态库链接的问题
冷水
posted @ 2012年3月04日 06:55
in OpenFOAM
, 3400 阅读
1 Pstream封装了MPI,采用mpicxx的编译选项生成了mpi/libPstream.so
同时有串行版的Pstream,生成dummy/libPstream.so
2 OpenFoam库,调用Pstream,并链接了dummy/libPstream.so,生成了libOpenFoam.so
3 基于OpenFoam库的并行程序,链接libOpenFoam.so
事实上,第2、3步不需要制定MPI链接选项(-lmpich之类),我做了一个例子来尝试
代码aa.C定义一个函数,
#include <cstdio> #include "mpi.h" using namespace std; void func(int argc,char **argv) { int rank ,size; MPI::Init(argc,argv); size=MPI::COMM_WORLD.Get_size(); rank=MPI::COMM_WORLD.Get_rank(); printf("Hello world! , I am %d,in %d/n computer", rank, size); MPI::Finalize(); }
mpicxx -c aa.C
mpicxx aa.o -shared -o libaa.so
这样将其编译为一个动态库
而后代码tt.C定义主函数
void func(int argc, char** argv); int main(int argc,char **argv) { func(argc,argv); }
编译
icpc tt.C -L./ -laa -o tt
且定义libaa.so的搜索路径
而后mpirun即可
但是还是有一个疑问:为何libOpenFoam.so要链接dummy/libPstream.so。也许在执行的时候换上mpi/libPstream.so就可以实现并行?
2024年1月17日 20:30
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