Hi KarlI have a dense matrix (2048 x 2048) on the GPU and I want to copy it
back to a host matrix on the CPU (2048 x 2048). Is there any example of using
fast_copy() ? 2048 is a multiple of 128. Thanks and Regards
Sumit
From: Karl Rupp <[email protected]>
To: Sumit Kumar <[email protected]>
Cc: "[email protected]"
<[email protected]>
Sent: Monday, August 3, 2015 1:23 AM
Subject: Re: [ViennaCL-devel] ViennaCL reductions
Hi Sumit,
> I was trying to run sparse matrix multiplication, but one of my explicit
> template typedefs had Int. After some digging, I found out that CSR only
> supported Float or double. Is there any reason for this? Can we also
> have support for other templates? (like int ?)
It is technically possible, but we haven't implemented it yet. After 5
years you are the first to even ask for it ;-)
> Another thing would be the alignment order. Suppose I have a Row-major
> Sparse Eigen matrix, then I can copy it to a (Row-Major ?) VCL
> compressed matrix. What about a column-major sparse Eigen matrix?
If you can point me to a fast, massively parallel column-major
matrix-vector multiplication routine, I look into it. However, as far as
I know, there is no such routine for general sparse matrices, hence it
does not make sense for us to support it.
Best regards,
Karli
> ------------------------------------------------------------------------
> *From:* Karl Rupp <[email protected]>
> *To:* Sumit Kumar <[email protected]>
> *Cc:* "[email protected]"
> <[email protected]>
> *Sent:* Friday, July 31, 2015 9:04 PM
> *Subject:* Re: [ViennaCL-devel] ViennaCL reductions
>
> Hi Sumit,
>
> > I am aware that Eigen can do it for its matrices and I am also aware
> > that VCL cannot do it natively. My question was this:
> > In your example of interfacing with Eigen, you have shown a VCL dense
> > matrix interfacing with an Eigen dense matrix. Do you have any example
> > of interfacing an Eigen Sparse matrix with a VCL dense matrix?
>
> No, we don't have this.
>
>
>
>
> Best regards,
> Karli
>
>
>
>
------------------------------------------------------------------------------
_______________________________________________
ViennaCL-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/viennacl-devel
