Turn on suggestions

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

Showing results for

- Intel Community
- Software
- Software Development SDKs and Libraries
- Intel® oneAPI Math Kernel Library
- What is error code -4 for cluster_sparse_solver routine

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

Piotr_G_1

Beginner

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

03-28-2018
08:38 AM

32 Views

What is error code -4 for cluster_sparse_solver routine

Hi,

I am using CLUSTER_SPARSE_SOLVER with real symmetric matrices. During phase 22 (Numerical factorization) I obtained error code equal to -4. Unfortunately, in the reference manual there is no explanation for -4. Could you help me to interpret it?

Thanks,

Piotr

Link Copied

2 Replies

Alexander_K_Intel2

Employee

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

03-28-2018
09:18 AM

32 Views

Hi,

What is the matrix type of your matrix? Such situation can appeared in case of zero pivot on diagonal for positive defined matrix

Thanks,

Alex

Piotr_G_1

Beginner

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

03-29-2018
04:31 AM

32 Views

Hi Alexander,

I am defining mtype as 2 (real and symmetric positive definite). I have checked the diagonal and there are no zeros. The sparse matrix I am using was generated by external tool and this matrix is supposed to be of mtype 2 (positive definite). So, -4 means that there is something wrong with the matrix?

Thanks,

Piotr

Topic Options

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

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