[Trilinos-Users] Compile very slowly

[Feng Xing]

Hello everyone,

I tried to compile a smalll code for solving Ax=b with Tpetra, Belos and Meulu. There are only about 400 lines. But it takes more than 20 minutes to compiler in mac os 10.10, gcc 4.9.2, openmpi 1.7.5, trillions 12.0.1. I would like to ask if it is normal or something is not well written in my code.

The structure is as following. Each member function do one work like create matrix (set matrix values, create vector, solve….). 

#include …..

typedef Tpetra::Map<int, int> map_type;
typedef Tpetra::CrsMatrix<double, int, int> mat_type;
typedef …….

using Teuchos::RCP;
…..

class SolveAxb{

	RCP<const map_type> matMap; 
        RCP<mat_type> A; 
        RCP<vec_type> x; 
        RCP<vec_type> b; 

public: 
……...
}

void SolveAxb::MatCreate(){
	// allocate matrix
}

void SolveAxb::MatSetValue(){
	// set values 
}
……

Thank you very much.

Feng Xing
Postdoc in Inria, France