On 8/9/20 7:22 PM, Feimi Yu wrote:
I realized something after I posted my question, so I removed it after a
while. Sorry that my original post is not shown in the thread. After checking
the output block IDs in ParaView I found that it was not
the unbalanced load that caused the slow computation, but somehow the hanging
nodes themselves, which caused the change of condition number in the system
matrix.
No, that too isn't your problem. Hanging nodes don't make the condition number
significantly worse. What's the equation you're solving, and what's your
solver and preconditioner?
Best
W.
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