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- From: Samuel Thibault <samuel.thibault@ens-lyon.org>
- To: Cyril Roelandt <cyril.roelandt@inria.fr>
- Cc: "starpu-devel@lists.gforge.inria.fr" <starpu-devel@lists.gforge.inria.fr>
- Subject: Re: [Starpu-devel] BCSR: the rowptr field.
- Date: Fri, 8 Jun 2012 03:38:35 +0200
- List-archive: <http://lists.gforge.inria.fr/pipermail/starpu-devel>
- List-id: "Developers list. For discussion of new features, code changes, etc." <starpu-devel.lists.gforge.inria.fr>
Cyril Roelandt, le Fri 08 Jun 2012 03:08:38 +0200, a écrit :
> I think colind should be [0, 0, 2], since the first two blocks start at
> column 0, and the lower right block starts at column 2.
I believe that would rather be [0, 0, 1], i.e. in blocks.
> But I'm not sure of what should be put in the rowptr field. Does anyone
> master the BCSR format ?
rowptr is the index (inside the nnzval array) of each row. Here,
[ 0, 1 ] since the first blocks of the rows are blocks 0 and 1 inside
nnzval.
> (I don't think we have any code using this interface in examples/).
We do, see examples/spmv.
Samuel
- [Starpu-devel] BCSR: the rowptr field., Cyril Roelandt, 08/06/2012
- Re: [Starpu-devel] BCSR: the rowptr field., Samuel Thibault, 08/06/2012
- Re: [Starpu-devel] BCSR: the rowptr field., Cyril Roelandt, 12/06/2012
- Re: [Starpu-devel] BCSR: the rowptr field., Samuel Thibault, 08/06/2012
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