[Openmp-dev] Failed to read local memory on device

[Itaru Kitayama via Openmp-dev]

In CUDA-GDB.

On Fri, Jan 17, 2020 at 10:34 AM Alexey Bataev <a.bataev at outlook.com> wrote:

> This is what you see in cuda-gdb? Or at the runtime when you run the
> program directly?
>
> -------------
> Best regards,
> Alexey Bataev
>
> 16.01.2020 3:22 PM, Itaru Kitayama via Openmp-dev пишет:
>
> Hi,
> Adding this small loop to my app:
>
> #pragma omp target parallel for map(to: nranks)
>         for (int i=0;i<0;i++) {
>         printf("%d\n", nranks);
>         }
>
> leads to a run-time error on device. See below:
>
> [New Thread 0x10008b9ff180 (LWP 103236)]
> [Switching focus to CUDA kernel 0, grid 2, block (0,0,0), thread (0,0,0),
> device 0, sm 0, warp 0, lane 0]
> 0x0000000014588068 in
> __omp_offloading_3b_801278cf__ZN4nest20EventDeliveryManager15deliver_events_INS_9SpikeDataEEEbiRKSt6vectorIT_SaIS4_EE_l666<<<(1,1,1),(128,1,1)>>>
> (
>     nranks=<error reading variable: Error: Failed to read local memory at
> address 0xc8ee158 on device 0 sm 0 warp 0 lane 0,
> error=CUDBG_ERROR_INVALID_MEMORY_ACCESS(0x8).
> >) at
> /p/project/cpcp0/pcp0151/projects/nest-simulator/nestkernel/event_delivery_manager.cpp:667
> 667 for (int i=0;i<0;i++) {
>
> I am using the latest trunk Clang for this.
>
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>
>
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