Work around flatccrt issue in CI script#7570
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Olivia-liu merged 1 commit intopytorch:mainfrom Jan 13, 2025
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When running build-qnn-sdk.sh in certain circumstances the libflatccrt.a cannot be found. To work around this we can build the QNN backend twice, second time with option `--no_clean`, to make sure the library is found. Resolves: pytorch#7300 Change-Id: I47e14f1fa318538587b848ee02240f7867c88f50 Signed-off-by: Benjamin Klimczak <benjamin.klimczak@arm.com>
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/7570
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Hi @dbort and @Olivia-liu. Could one of you have a look please to unblock #5027? |
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@Olivia-liu can we dig into this issue and figure out the root cause? |
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When running build-qnn-sdk.sh in certain circumstances the libflatccrt.a cannot be found. To work around this we can build the QNN backend twice, second time with option `--no_clean`, to make sure the library is found. Resolves: #7300 Change-Id: I47e14f1fa318538587b848ee02240f7867c88f50 Signed-off-by: Benjamin Klimczak <benjamin.klimczak@arm.com>
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### Summary Seems like there is a race in building `libflatccrt.a`. This issue has existed for a while: #7300. It was temporarily mitigated in #7570 by just reducing the parallelism. In this diff I attempt to fix it. This is just my assumption of what is wrong. Given flatccrt builds a debug version with a `_d` suffix, if the target isn't depended on (i.e. some target don't use the conditional target name) then the order of how the lib is built causes a race. So for now, always use the non-debug version. Given it's a race, I was never able to repro the issue locally — I can't guarantee this is the problem. However, it seems my recent changes in #10855 has increased the frequency of the problem in CI. ### Test plan CI cc @larryliu0820
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### Summary Seems like there is a race in building `libflatccrt.a`. This issue has existed for a while: pytorch#7300. It was temporarily mitigated in pytorch#7570 by just reducing the parallelism. In this diff I attempt to fix it. This is just my assumption of what is wrong. Given flatccrt builds a debug version with a `_d` suffix, if the target isn't depended on (i.e. some target don't use the conditional target name) then the order of how the lib is built causes a race. So for now, always use the non-debug version. Given it's a race, I was never able to repro the issue locally — I can't guarantee this is the problem. However, it seems my recent changes in pytorch#10855 has increased the frequency of the problem in CI. ### Test plan CI cc @larryliu0820
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When running build-qnn-sdk.sh in certain circumstances the libflatccrt.a cannot be found. To work around this we can build the QNN backend twice, second time with option
--no_clean, to make sure the library is found.Fixes #7300