Thanks for raising the problem. We try to reduce the memory occupy in Pardiso. Could you please explain some details about your test scenary or test use the test case?
In the OOC figure, the red line means the Ram memory usage. What 's the mean of green line, is it Hard Disk memory? and what the x-axis times means? And could you tell the expected line you hope to see?
As MKL 11.2 release, if possible, could you please try the new version as it include some improvement about the solver.
What's New in Intel MKL 11.2
Intel MKL PARDISO: