'Efficient matrix times column vector for each column
I have a matrix
1 2 3
1 2 3
1 2 3
that I need to multiply with a column vector
[2
3
4]
to get
2 4 6
3 6 9
4 8 12
Now, I can make the vector into a matrix and do an element-wise multiplication, but is there also an efficient way to do this in MKL / CBLAS?
Solution 1:[1]
Could you please check the information provided below if it helps depending on your requirement.
For vector-vector operations, please refer the below link.
For matrix-vector operations, please refer the below link.
https://www.intel.com/content/www/us/en/develop/documentation/onemkl-developer-reference-c/top/blas-and-sparse-blas-routines/blas-routines/blas-level-2-routines.html#blas-level-2-routines l For matrix-matrixoperations, please refer the below link.
The question mark in the group name corresponds to different character codes indicating the data type (s, d, c, and z or their combination)
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Shanmukh-Intel |