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
- Does the Intel MKL CSR format imply a restriction on the sparse matrix?

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

euclid0413

Beginner

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

07-17-2012
06:13 AM

58 Views

Does the Intel MKL CSR format imply a restriction on the sparse matrix?

In page 2756 of the Intel MKL Reference Manual(2007), it is said that CSR format for sparse matrix A consists of four arrays,which are called the* values*, *columns*,* pointerB*, and *pointerE* arrays, and that the length of* pointerB* array is equal to the number of rows in A. Besides, element j of *pointerB* array gives the index into the values array that contains the first non-zero element in a row j of A.So we can deduce that every row of A must have at least one non-zero element.

The problem is, what would happen if some rows of A consist of all zeros?

Link Copied

2 Replies

Gennady_F_Intel

Moderator

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

07-17-2012
10:08 AM

58 Views

it should works w/o problem, if I am not mistaken we should change the documentation.

euclid0413

Beginner

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

07-18-2012
08:59 PM

58 Views

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.