cluster_sparse_solver can not release physical memory for rank=0 process

[Chaowen_G_]

Hi:

   I find out that cluster_sparse_solver can not release physical memory for rank=0 process.

   I apply two processes and two threads for each process to solve mtype=6, complex and symmetric matrix and use distribute assembled matrix input format as well as distribute RHS elements. The full example is in the attachment file.

   The test I do is use literation statement to do the same calculation again and again. The result for every loop is correct. And the physical memory for rank=1 remains the same for each loop. However, the physical memory for rank=0 keeps on climbing. My computer has 16G memory and the physical memory occupation is shown below:

loop             rank=0(%)               rank=1(%)

         phase 11   phase 23

0       4.7            6.5                   4.6

1       5.7            7.4

2       6.6            8.3

3       7.5            9.3

4       8.4            10.2

5       9.4            11.2

I use the following command to compile: mpic++ -cxx=icpc -std=c++1y -mkl -xHost plain.cpp

and to run: mpiexec -n 2 ./a.out

I use mpich 3.1, mkl 11.2, icpc 15.0.0 on linux 64

[Gennady_F_Intel]

Hi!

I see the leaks on my side too but the size of these leaks of memory not so big like you saw on your side. Nevertheless, we will check what's going on with this tests and will back to you soon.

--Gennady

[Chaowen_G_]

I try to use mkl 11.2. update 1, but the problem still remains the same. Does mkl have any plan to fix the problem?

[Gennady_F_Intel]

yes. the preliminary plan to add this fix into the next update. you will be updated when the fix would be released.

[Gennady_F_Intel]

Hi!   the problem has been fixed in 11.2 update 2 which has been released officially. Please check the problem on your side and let us know the results. thanks.