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Parallella Community Supercomputing for Everyone 2016-07-12T16:53:22+00:00 https://parallella.org/forums/feed.php?f=18&t=1730 2016-07-12T16:53:22+00:00 2016-07-12T16:53:22+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=17833#p17833 <![CDATA[Re: OpenCL __local memory]]>
thank you so much for your explanations.
As far as I understand, you get best performance in local memory by keeping the all memory banks active through balancing. I don't quite understand though how you do this on the Epiphany if this concept of local memory normally used in OpenCL doesn't apply to the epiphany architecture.

Statistics: Posted by smoothy — Tue Jul 12, 2016 4:53 pm

]]> 2015-12-07T11:34:02+00:00 2015-12-07T11:34:02+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=16333#p16333 <![CDATA[Re: OpenCL __local memory]]> Statistics: Posted by dobkeratops — Mon Dec 07, 2015 11:34 am

]]> 2015-12-07T09:18:06+00:00 2015-12-07T09:18:06+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=16332#p16332 <![CDATA[Re: OpenCL __local memory]]> Statistics: Posted by dobkeratops — Mon Dec 07, 2015 9:18 am

]]> 2015-12-04T15:57:50+00:00 2015-12-04T15:57:50+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=16324#p16324 <![CDATA[Re: OpenCL __local memory]]> locality and accessibility. The locality implicitly defines accessibility. The __private memory is accessible by threads within the processing element and __local memory is accessible by all threads within an OpenCL workgroup. Epiphany doesn't really have a hardware workgroup and it can access all memory at any location. There's no programming mechanism within OpenCL to allow thread 0 in workgroup 0 to access __private or __local memory from thread 0 in workgroup 1, although Epiphany could do it.

In my opinion, it would be good to just let OpenCL be and not try to force Epiphany to conform to it. The Epiphany architecture is much more capable than the virtual OpenCL device model.

Statistics: Posted by jar — Fri Dec 04, 2015 3:57 pm

]]> 2015-12-02T23:38:49+00:00 2015-12-02T23:38:49+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=16301#p16301 <![CDATA[Re: OpenCL __local memory]]> Statistics: Posted by dobkeratops — Wed Dec 02, 2015 11:38 pm

]]> 2014-09-15T22:13:01+00:00 2014-09-15T22:13:01+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=10763#p10763 <![CDATA[Re: OpenCL __local memory]]> Statistics: Posted by dar — Mon Sep 15, 2014 10:13 pm

]]> 2014-09-15T21:18:01+00:00 2014-09-15T21:18:01+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=10762#p10762 <![CDATA[Re: OpenCL __local memory]]> Statistics: Posted by cmcconnell — Mon Sep 15, 2014 9:18 pm

]]> 2014-09-15T19:49:24+00:00 2014-09-15T19:49:24+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=10760#p10760 <![CDATA[Re: OpenCL __local memory]]> Statistics: Posted by djm — Mon Sep 15, 2014 7:49 pm

]]> 2014-09-15T16:03:58+00:00 2014-09-15T16:03:58+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=10756#p10756 <![CDATA[Re: OpenCL __local memory]]> Statistics: Posted by dar — Mon Sep 15, 2014 4:03 pm

]]> 2014-09-15T15:33:00+00:00 2014-09-15T15:33:00+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=10754#p10754 <![CDATA[Re: OpenCL __local memory]]> Statistics: Posted by djm — Mon Sep 15, 2014 3:33 pm

]]> 2014-09-15T15:30:13+00:00 2014-09-15T15:30:13+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=10753#p10753 <![CDATA[Re: OpenCL __local memory]]> Statistics: Posted by djm — Mon Sep 15, 2014 3:30 pm

]]> 2014-09-15T14:02:24+00:00 2014-09-15T14:02:24+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=10752#p10752 <![CDATA[Re: OpenCL __local memory]]> Statistics: Posted by dar — Mon Sep 15, 2014 2:02 pm

]]> 2014-09-15T05:33:57+00:00 2014-09-15T05:33:57+00:00 https://parallella.org/forums/viewtopic.php?t=1730&p=10739#p10739 <![CDATA[OpenCL __local memory]]> Statistics: Posted by djm — Mon Sep 15, 2014 5:33 am

]]>