c++ - Possible data race condition using openMP, corrupted data -


i have code works fine when running on 1 thread. have been using open mp parralellize code. problem when use more 1 thread start corrupted results. best guess have data race condition somewhere in code cannot find it. thoughts or advice appreciated. in advance.

omp_set_num_threads( 12 ); double average = 0;     int x;     #pragma omp parallel schedule(static) reduction(+:average)     for(x = 0; x<k_folds_folds; x++) //need paralellize loop     {         double result = logistic_regression_test(xtraining[x], xtest[x], ytraining[x], ytest[x]);         average += result;       }

the code works fine when comment out omp_set_num_threads. k_folds_folds = 15 , logistic_regression_test function bunch of stuff , returns double. possible problem somewhere within function? function create local variables @ same memory location every time, if multiple threads executing function? explain corrupted data if each function called in parallel changing same memory addresses.


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