# Spase by dense matrix product

**URL:** https://discourse.julialang.org/t/spase-by-dense-matrix-product/6047
**Category:** General Usage
**Created:** [September 23, 2017, 6:18am UTC](https://discourse.julialang.org/t/spase-by-dense-matrix-product/6047 "2017-09-23T06:18:30Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Tomas\_Pevny](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tomas_pevny/32/25466_2.png) [@Tomas\_Pevny](https://discourse.julialang.org/u/Tomas_Pevny)
#### Post date: [September 23, 2017, 6:18am UTC](https://discourse.julialang.org/t/spase-by-dense-matrix-product/6047/1 "2017-09-23T06:18:30Z")

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Can I ask if someone knows about sparse blas for Julia? I am particularly looking for multiplication of sparse and dense matrix? I have tried MKLSparse and [https://github.com/dcjones/RecursiveSparseBlocks.jl](https://github.com/dcjones/RecursiveSparseBlocks.jl). I am not sure I have invoked MKLSparse correctly. The RecursiveSparseBlocks is slower in my use-case. Any ideas are welcome. Size of my sparse matrix is abour 2000x150000 with average number of non-zero elements 0.5%, the dense matrix is abou 2000 by 40.

Thanks for answers.