Add check for non-contiguous memory access when lowering to async dma… #13613
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adstraw
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Dec 15, 2022
| auto store_iter_map = DetectIterMap(store_index, input_iters, 1, arith::IterMapLevel::NoCheck, | ||
| &analyzer, false); | ||
| if (!store_iter_map->errors.empty()) { | ||
| LOG(FATAL) << "Unable to lower async dma for non contiguous memory access with index: " |
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Nit: You might differentiate the error message by including something text indicating that the "buffer store" contained the non contiguous access.
| auto load_iter_map = | ||
| DetectIterMap(load_index, input_iters, 1, arith::IterMapLevel::NoCheck, &analyzer, false); | ||
| if (!load_iter_map->errors.empty()) { | ||
| LOG(FATAL) << "Unable to lower async dma for non contiguous memory access with index: " |
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Nit: Same as above. Add text indicating "buffer load" contained non contiguous access.
What support is being planed? 2D DMA or breaking up into contiguous copies? |
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We are still discussing the pros and cons of the potential options but the possible solutions are.
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fzi-peccia
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Mar 27, 2023
apache#13613) * Add check for non-contiguous memory access when lowering to async dma copies. * lint * lint and nits * lint
mikeseven
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Sep 27, 2023
apache#13613) * Add check for non-contiguous memory access when lowering to async dma copies. * lint * lint and nits * lint
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… copies.
Currently we do not support non contiguous memory copies for async dma so this adds a check to error out in the case that either load or store is non contiguous. Unfortunately if we do not throw an error in this case then we get inaccurate outputs. Added a test to verify that we are indeed throwing an error in this case that should be removed once support is added.
@adstraw @masahi