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<div style=""> Hi, Petsc Team,<br>
<br>
I have a Petsc code calculating simple structured grid. The dimension is 96 x 25 x 22 with DOF = 6. When running in parallel or sequential processing on a shared memory machine, it costs about 2.5GB RAM when assembling the matrix and more than 5GB when KSP
is solving with GMRES. In the code I use the basic DAGetmatrix(da, MATAIJ, &M) to define the matrix, and it is supposed to be a sparse matrix. Is this normal for Petsc application? If not, how to improve this?<br>
<br>
<br>
Thank you.<br>
<br>
<br>
Zhisong Li<br>
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