On 1/7/21 10:22 PM, Lixing Zhu wrote:
You are right. I am not bounded by the memory at this moment. The only
potential issue I can think of at this stage is the computation of the error
norm. Technically, if I feed the slots in global RHS corresponding to bubble
support as zero, the solution at the bubble support should zero. Then the
error norm would be the same as compared to use solutions at vertices only. Is
this presumption valid here?
No. You are computing a solution in the space that includes the bubbles. (The
fact that you want to employ a clever way to solve the linear problem does not
change this.) So you have to compute the error with the solution including the
bubble functions, unless you only evaluate the solution at points at which the
bubble functions are zero.
Best
W.
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Wolfgang Bangerth email: [email protected]
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