Which projects, if any, use CUDA but not OpenCL?

Message boards : Projects : Which projects, if any, use CUDA but not OpenCL?
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Profile Joseph Stateson
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Message 84787 - Posted: 14 Feb 2018, 18:40:40 UTC
Last modified: 14 Feb 2018, 18:47:01 UTC

I mentioned CUDA, but this might also apply to ATI boards.

I have a pair of GTX1070 that have 8gb of memory. Looking at the event messages, it is clear that OpenCL only uses just under 4gb of memory. I assume that is a restriction based on 32 bit addressing. That is just a guess.

It appears I can run 4 Einstein or 5 milkyway on any GPU that has 4gb of memory. Less concurrency for 3 and 2gb graphics boards. I read that miners have specific programs they run to mine on the larger gtx1080 that have 11gb of memory and they use all of the 11gb. I was wondering if any BOINC projects are coded to use all available GPU memory and not be restricted to 4gb. I assume that would be more efficient but perhaps a larger burden (heat) on the cooler.

I tried running more than 4 tasks on my gtx1070 and the tasks started erroring out. I assume the problem is the 4gb OpenCL. My systems are Core2 quad so I only have 4 cores. Maybe they errored out because they were not fed properly by the cpus and not the 4gb OpenCL limit?
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Profile Keith Myers
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Message 84791 - Posted: 14 Feb 2018, 19:46:11 UTC - in response to Message 84787.  

Actually, OpenCL can only use 1/4 of the gpu onboard memory. The limitation is in the OpenCL framework and not specific to any projects OpenCL applications.
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Message 84794 - Posted: 14 Feb 2018, 20:59:51 UTC

GPUGrid is CUDA only. They have limited tasks and finally updated their linux app today that should work.
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Message 84805 - Posted: 16 Feb 2018, 14:44:41 UTC

You asked about AMD, well... Moo! still has CAL capable work available that AMD cards can typically run. I have a few really old non-OpenCL capable devices here and there that sometimes runs it.
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Message boards : Projects : Which projects, if any, use CUDA but not OpenCL?

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