topic Re: memory leak in pardiso when using iparm(4) different from 0 in Intel® oneAPI Math Kernel Library

memory leak in pardiso when using iparm(4) different from 0

ascotti — Wed, 01 Oct 2008 14:31:37 GMT

I have an application where I need to solve two sparse problems per time step. The two sparse problems are almost identical (same sparseness, etc), except one does not change from time step to time step, whereas the other changes slightly. Thus, I generate the LU decomposition of the first problem at the beginning and solve the first problem directly at each time step (iparm(4)=0). The second problem is solved using the LU decomposition from the first problem as a preconditioner for CG (iparm(4)=32). The issue is that the second problem results in a memory leak. If the second problem is solved directly (factorization+solution+memory release) at each time step, no leaks occurs. Tried with mkl version 9.0, 9.1 and 10.0 and get the same problem.Tried to use MKL_FreeBuffers() after CG step, but still leaks...

Thank you

Re: memory leak in pardiso when using iparm(4) different from 0

Gennady_F_Intel — Wed, 01 Oct 2008 15:31:10 GMT

Yes, this is a known problem with Pardiso and we are working on this problem. We are going to fix all known us Pardsio memory leakages next release MKL 10.1 Gold.

--Gennady

Re: memory leak in pardiso when using iparm(4) different from 0

ascotti — Wed, 08 Oct 2008 17:45:15 GMT

Glad to hear that. Any idea regarding the release date?

Alberto

Re: memory leak in pardiso when using iparm(4) different from 0

Gennady_F_Intel — Tue, 14 Oct 2008 15:04:10 GMT

Alberto,

In the November this year, but I couldnt provide more the exact date.

-- Gennady