Reply to > This is weird. Try > 1) increase work space with > -mat_mumps_icntl_14 50 (default is 20) > 2) different matrix orderings with > -mat_mumps_icntl_7 2 (or number from 0 to 6) > > Run your code with '-log_summary' and see which routine causes this huge > difference. > > Hong > > I just tested the problem according to what you suggested. I set icntl_14 = 50 and icntl_7 = 5 (METIS). The problem still persisted. The first solve took 920 second and second solve took 215 second with same nonzero pattern pc set up. I also attached the log_summary output file. Do you have any further suggestion? Thanks.
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