[petsc-users] -log_summary for MatMult

Alexander Grayver agrayver at gfz-potsdam.de
Fri Jun 15 07:22:49 CDT 2012


Hello,

When I call MatMult with MPIDENSE matrix in log summary I see:

Event                Count      Time (sec)     
Flops                             --- Global ---  --- Stage ---   Total
                    Max Ratio  Max     Ratio   Max  Ratio  Mess   Avg 
len Reduct  %T %f %M %L %R  %T %f %M %L %R Mflop/s
------------------------------------------------------------------------------------------------------------------------
MatMult                1 1.0 9.5740e-01 1.5 8.19e+08 1.0 0.0e+00 0.0e+00 
1.0e+00  2 40  0  0  5   2 40  0  0  6  3419
MatMultTranspose       1 1.0 1.0793e+00 1.4 8.18e+08 1.0 0.0e+00 0.0e+00 
2.0e+00  2 40  0  0 11   2 40  0  0 11  3030


Why do number of messages and their length equal zero?

-- 
Regards,
Alexander



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