<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Hello Everyone,</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">A couple of questions on the <b><i>-log_summary</i></b> provided by PETSc.<br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">1. <b>Avg-Flops & Avg-Flops/sec</b> are averaged among the participating cores or averaged over the simulation time or both?</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">2. <b>Max/Min Flops & Flops/sec</b> is an indication of load balancing?</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">In simulation-2 these ratios are high compared to simulation-1. Does that mean simulation-2 is not well balanced?  <br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Please follow the outputs from two different simulations </div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">(Note: the problem size and the number of processors used are different). <br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><b>Simulation-1</b></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><div class="gmail_default">                                   Max           Max/Min        Avg            Total </div><div class="gmail_default">Time (sec):            4.208e+02      1.00005   4.208e+02</div><div class="gmail_default">Objects:                 7.100e+01      1.00000   7.100e+01</div><div class="gmail_default">Flops:                     3.326e+11      1.31175   3.017e+11  4.826e+13</div><div class="gmail_default">Flops/sec:              7.904e+08      1.31175   7.169e+08  1.147e+11</div><div class="gmail_default">MPI Messages:      0.000e+00      0.00000   0.000e+00  0.000e+00</div><div class="gmail_default"><br></div><div class="gmail_default"><br></div><div class="gmail_default"><b>SImulation-2:</b></div><div class="gmail_default"><div class="gmail_default">                                  Max          Max/Min        Avg           Total </div><div class="gmail_default">Time (sec):           8.434e+02      1.00000   8.434e+02</div><div class="gmail_default">Objects:                7.300e+01      1.02817   7.102e+01</div><div class="gmail_default">Flops:                   6.555e+11      1.85115   5.798e+11  3.711e+14</div><div class="gmail_default">Flops/sec:            7.772e+08      1.85115   6.874e+08  4.400e+11</div><div class="gmail_default">MPI Messages:    0.000e+00      0.00000   0.000e+00  0.000e+00</div></div><div class="gmail_default"><br></div><div class="gmail_default">We're trying to understand the performance of our solver using these outputs.</div><div class="gmail_default">Any comments in relation to that will be helpful. </div><div class="gmail_default"><br></div><div>Thanks & Regards,</div></div><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><div><font size="2" face="georgia, serif"><b>Ajit Desai</b></font></div><div><span style="font-family:georgia,serif;font-size:small"> PhD Scholar</span><font size="2" face="georgia, serif">, Carleton University, </font>Canada</div></div><div><font face="georgia, serif"><b></b></font></div><span style="font-family:verdana,sans-serif"><span style="font-family:'times new roman',serif"></span></span></div></div></div></div></div></div></div></div></div></div></div>
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