[Openmp-dev] Offloading failure leads to a system hang up
Itaru Kitayama via Openmp-dev
openmp-dev at lists.llvm.org
Tue Oct 20 00:53:15 PDT 2020
My app, (I can not reproduce it with a simple app) fails to offload
part of code to the device:
Libomptarget error: Copying data to device failed.
Libomptarget error: Call to targetDataBegin failed, abort target.
Libomptarget error: Failed to process data before launching the kernel.
Libomptarget error: run with env LIBOMPTARGET_INFO>1 to dump
host-targetpointer maps
Libomptarget fatal error 1: failure of target construct while
offloading is mandatory
and Linux does not accept a signal; I had to `scancel` it as I am
using slrum, but
that leads to a drain state and I have to ask admin to reboot it.
Same code runs and fails but does not cause a system hang at all.
Could someone look
at how AArch64 code generation is different from the main X86 code?
Thanks,
Itaru.
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