How shou I use mutation++ with OpenMP Correctly and Efficiently？

[tu-97]

My OS is ubuntu:

My OS Version:20.04

HELLO,I am a rookie CFD coder ,I want to Parallelize my code with OpenMP. I am using structured grid. For two-dimensional calculations，there are two for loop. In each mesh point，I need to use mutation++ to calculate mixture properties，T 、P...

My serial code works well，I can pass mixture using C + + Reference. //---------------------------------------------------------C++ code---------------------- void Icondition(variable Q, conser TS, Mutation::Mixture &gas){...} //---------------------------------------------------------C++ code----------------------

If I creat a new mixture class in each mesh point ，it is very slow，because it need read text file form Local memory.How shou I use mutation++ with OpenMP Correctly and Efficiently？

//---------------------------------------------------------C++ code---------------------- void Redi(variable *Q, Mutation::MixtureOptions &gas) { Mutation::MixtureOptions opt(gas);

pragma omp parallel for default(shared) private(opt) num_threads(NCORES)

for (int i = 0; i <= MX; i++)
    for (int j = 0; j <= MY; j++)
    {
        Mutation::Mixture local_gas(gas);
            }

} //---------------------------------------------------------C++ code----------------------