topic >>...1 Does the pdposv in Intel® oneAPI Math Kernel Library

memory of MKL routines

Cheng_Xinghua — Tue, 07 May 2013 08:14:18 GMT

1 Does the pdposv routine, which solves a symmetric positive definite system of linear equations, allocate any other large memory except the matrix A and B?

2 To solves a symmetric positive definite system of linear equations, which routine needed addtional memory is the least ? and how many about?

>>...1 Does the pdposv

SergeyKostrov — Tue, 07 May 2013 13:52:59 GMT

>>...1 Does the pdposv routine, which solves a symmetric positive definite system of linear equations, allocate any other large memory >>except the matrix A and B?.. Simple tests could be done and, depending on a platform, some built-in functionality of an operating system could show you the difference. For example, use Task Manager on a Windows platform for verification how much memory is allocated: Test-case 1: Allocate memory for A and B matricies ( for example, 8192x8192 ) -> don't call pdposv -> verify amount of allocated memory ( M1 ) Test-case 2: Allocate memory for A and B matricies ( for example, 8192x8192 ) -> call pdposv -> verify amount of allocated memory ( M2 ) Calculate the difference M2 - M1.

It's a good idea.

Cheng_Xinghua — Thu, 09 May 2013 09:14:33 GMT

It's a good idea.

>>>>...Calculate the

SergeyKostrov — Thu, 09 May 2013 13:30:25 GMT

>>>>...Calculate the difference M2 - M1... >> >>It's a good idea... Please follow up with results of your tests. Thanks in advance!