Turn on suggestions

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Mute
- Printer Friendly Page

Highlighted
##

Cheng_Xinghua

Beginner

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

05-07-2013
01:14 AM

19 Views

memory of MKL routines

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?

3 Replies

Highlighted
##

>>...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.

SKost

Valued Contributor II

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

05-07-2013
06:52 AM

19 Views

Highlighted
##

Cheng_Xinghua

Beginner

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

05-09-2013
02:14 AM

19 Views

It's a good idea.

Highlighted
##

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

SKost

Valued Contributor II

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

05-09-2013
06:30 AM

19 Views

For more complete information about compiler optimizations, see our Optimization Notice.