GPU Requirements for BRP7 tasks
17 Oct 2023 19:17:47 UTC
Topic 230217
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Hi All,
With the winding down of FGRP1BG tasks, I noticed that my older GPUs are no longer receiving tasks (e.g., GTX 560, 580 and integrated Intel GPUs on 4th gen i5s).
Presumably, this is because BRP7 tasks have higher OpenCL / CUDA requirements? Are those requirements published somewhere? I'd like to know because I will get rid of those old inefficient GPUs if they there is little scope for use here in the future.
Thanks,
first off, the BRP7 requires
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first off, the BRP7 requires GPU hardware FP64 support. FGRPB1G did not rely as heavily on FP64 as BRP7 does, so the option to fall back to CPU for FP64 is not there on BRP7.
Intel GPUs largely dont support FP64 (right now). there is a Windows BRP7 Intel GPU app, but most systems can't run it due to the FP64 requirements. there is a driver level workaround to get Intel GPUs to crunch FP64 on Linux, but not windows. however, there is no Linux app from the project. kind of a catch 22 there. I've tested it and it takes so long to run that it's really not worth it anyway (~4hrs to run one task)
BRP7 also has a minimum CC requiremement of 3.0 or greater. I think it will only work for Kepler generation and newer. the app doesnt work with Fermi and earlier. GPUs that old arent useful for many things anymore.
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Thank you for the detailed
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Thank you for the detailed response. I will retire this hardware then.