Hi, make sure to use Eigen's head, and to compile with OpenMP enabled on your compiler, for instance with -fopenmp with GCC.
Gaël On Thu, Sep 10, 2020 at 6:25 AM ztdepyahoo <[email protected]> wrote: > I have set the tread =12 in the program . Eigen::nbThreads( ) also > feedbacks correct number. > but the speed of solution seems doesn't change. > what is the reason. > Regards > > > > Eigen::setNbThreads(12); > int nthreads = Eigen::nbThreads( ); > std::cout << "THREADS = " << nthreads <<std::ends; // returns '1' > BiCGSTAB<SparseMatrix<double, RowMajor>, IncompleteLUT<double>> solver; > solver.setTolerance(1e-10); > solver.setMaxIterations(1000); > solver.compute(A); > VectorXd x = solver.solve(b); > > > > > > > > ztdepyahoo > [email protected] > > <https://maas.mail.163.com/dashi-web-extend/html/proSignature.html?ftlId=1&name=ztdepyahoo&uid=ztdepyahoo%40gmail.com&iconUrl=https%3A%2F%2Fmail-online.nosdn.127.net%2Fsmac21b248a56949de9f08898ddfa22c2b.jpg&items=%5B%22ztdepyahoo%40gmail.com%22%5D> > 签名由 网易邮箱大师 <https://mail.163.com/dashi/dlpro.html?from=mail81> 定制 >
