Objet : Developers list for StarPU
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- From: Samuel Thibault <samuel.thibault@inria.fr>
- To: Malcolm Roberts <malcolm.i.w.roberts@gmail.com>
- Cc: starpu-devel@lists.gforge.inria.fr, "helluy@math.unistra.fr" <helluy@math.unistra.fr>, Bruno Weber <bruno.weber@axessim.fr>
- Subject: Re: [Starpu-devel] Performance with SOCL on multiple devices
- Date: Wed, 6 Jan 2016 14:44:21 +0100
- 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>
Hello,
It seems you do not use the CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE
property. IIRC, this makes SOCL have to sequentialize all tasks queued
on the same command queue (required by the OpenCL standard). To get
parallelism, you would need to set
CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE, and use events to synchronize
the kernels that need to depend on each other.
Samuel
- [Starpu-devel] Performance with SOCL on multiple devices, Malcolm Roberts, 06/01/2016
- Re: [Starpu-devel] Performance with SOCL on multiple devices, Samuel Pitoiset, 06/01/2016
- Re: [Starpu-devel] Performance with SOCL on multiple devices, Samuel Thibault, 06/01/2016
- Re: [Starpu-devel] Performance with SOCL on multiple devices, Malcolm Roberts, 06/01/2016
- Re: [Starpu-devel] Performance with SOCL on multiple devices, Samuel Thibault, 06/01/2016
- Re: [Starpu-devel] Performance with SOCL on multiple devices, Samuel Thibault, 06/01/2016
- Re: [Starpu-devel] Performance with SOCL on multiple devices, Malcolm Roberts, 08/01/2016
- Re: [Starpu-devel] Performance with SOCL on multiple devices*, Samuel Thibault, 08/01/2016
- Re: [Starpu-devel] Performance with SOCL on multiple devices, Malcolm Roberts, 13/01/2016
- Re: [Starpu-devel] Performance with SOCL on multiple devices, Malcolm Roberts, 08/01/2016
- Re: [Starpu-devel] Performance with SOCL on multiple devices, Samuel Thibault, 06/01/2016
- Re: [Starpu-devel] Performance with SOCL on multiple devices, Samuel Thibault, 06/01/2016
- Re: [Starpu-devel] Performance with SOCL on multiple devices, Malcolm Roberts, 06/01/2016
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