debug pso typedef pop_size_t size_type swarm_size

[yezhengli-Mr9]

I put debug info

if (m_verbosity) {
        std::cout << "Exit condition -- generations = " << m_max_gen << std::endl;
    }
    std::cout<<"ERROR yezheng after this swarm_size\t"+swarm_size<<"\n";
    // copy particles' positions & velocities back to the main population
    for (decltype(swarm_size) i = 0u; i < swarm_size; ++i) {
        std::cout<<"i\t"<<i<<"\n";
        std::cout<<"before lbX["<<i<<"]\t"<<"\n";
        lbX[i];
        std::cout<<"before lbfit["<<i<<"]\t"<<"\n";
        
        pop.set_xf(i, lbX[i], lbfit[i]);
    }
    return pop;

here

pagmo2/src/algorithms/pso.cpp

Lines 433 to 441 in ac7b6d2

	} // end of main PSO loop
	if (m_verbosity) {
	std::cout << "Exit condition -- generations = " << m_max_gen << std::endl;
	}
	// copy particles' positions & velocities back to the main population
	for (decltype(swarm_size) i = 0u; i < swarm_size; ++i) {
	pop.set_xf(i, lbX[i], lbfit[i]);
	}

and outputs

 before pop = algo.evolve(pop)
   Gen:        Fevals:         gbest:     Mean Vel.:    Mean lbest:    Avg. Dist.:
      1              5              0      0.0809775              0        1.86759
     24            120              0      0.0894345              0       0.981278
     47            235              0      0.0922412              0         1.0065
     70            350              0      0.0867833              0       0.986269
     93            465              0      0.0858056              0        1.00226
    116            580              0      0.0781791              0        0.94671
    139            695              0       0.091468              0       0.944843
    162            810              0      0.0941854              0       0.939044
    185            925              0      0.0787739              0       0.940948
    208           1040              0      0.0937143              0       0.975976
    231           1155              0      0.0800767              0       0.973222
    254           1270              0      0.0779511              0        1.04491
    277           1385              0      0.0883533              0          1.001
    300           1500              0      0.0839196              0       0.964306
    323           1615              0       0.090369              0       0.995514
    346           1730              0      0.0841281              0       0.932411
    369           1845              0      0.0859699              0       0.978795
    392           1960              0      0.0876075              0       0.944426
    415           2075              0      0.0823326              0       0.997054
    438           2190              0      0.0829605              0       0.933394
    461           2305              0      0.0777766              0       0.951584
    484           2420              0      0.0860298              0       0.987653
Exit condition -- generations = 500
 yezheng after this swarm_size	
i	0
before lbX[0]	
before lbfit[0]	
i	1
before lbX[1]	
before lbfit[1]	
i	2
before lbX[2]	
before lbfit[2]	
i	3
before lbX[3]	
before lbfit[3]	
i	4
before lbX[4]	
before lbfit[4]	
Segmentation fault

in addition to #559 (comment)

How to debug swarm_size of auto type:

pagmo2/include/pagmo/population.hpp

Line 88 in ac7b6d2

typedef pop_size_t size_type;

[yezhengli-Mr9]

alg.evolve() finish. This error happen after evolve finish but before next command.

[yezhengli-Mr9]

cleared