Need help with runtime error "libgomp: target function wasn't mapped"

[Patrick Begou]

Hi,

I need some help to understand a runtime error with an OpenACC fortran 
code built with Gnu Fortran.

- My gfortran is from the git repository, branch devel/omp/gcc-13,  
updated today.
- it is built with cuda: /opt/nvidia/hpc_sdk/Linux_x86_64/24.3/cuda/ 
(from Nvidia RPM)
- binutils is 2.42

Building and running a small application works:

    - creating storage on the device in a subroutine,
    - initializing the data with different values on the host and on the
    device in the main application,
    - checking data on the host and on the device in the main application

Building my large application is successful but when running it, it ends 
quickly with "*libgomp: target function wasn't mapped*". it is an 
openMPI application but for this test I use only one process:

  mpirun -n 1 ./appp.exe

If I set GOMP_DEBUG=1 I get more messages and I think they show that 
some data is offloaded before the error. But I do not understand how to 
investigate such error. Details are provided below:

    goacc_profiling_initialize: calling acc_register_library
    dummy acc_register_library
    GOMP_NVPTX_LOWLAT_POOL: <Not defined>

    /* messages printed from my application removed */

    libgomp: target function wasn't mapped
    nvptx_run_deferred_page_locked_host_free
    gomp_attach_pointer: attaching host 0x250b160, target 0x7fa76b20a800
    (struct base 0x7fa76b20a800) to 0x7fa76b20aa00
                 /* several similar messages removed */
    gomp_attach_pointer: attaching host 0x251db00, target 0x7fa76b20f400
    (struct base 0x7fa76b20f400) to 0x7fa76b20f600
    gomp_attach_pointer: attaching host 0x251e870, target 0x7fa76b20f800
    (struct base 0x7fa76b20f800) to 0x7fa76b20fa00
    gomp_attach_pointer: attaching host 0x251f5e0, target 0x7fa76b20fc00
    (struct base 0x7fa76b20fc00) to 0x7fa76b20fe00
    gomp_attach_pointer: attaching host 0x2520350, target 0x7fa76b210000
    (struct base 0x7fa76b210000) to 0x7fa76b210200
    GOACC_parallel_keyed: mapnum=11, hostaddrs=0x7ffcd9a731a0,
    size=0x7ffcd9a73140, kinds=0x7fa7bfd2daa0

    libgomp: target function wasn't mapped
    nvptx_run_deferred_page_locked_host_free


My application is a "main" program and a large library. Building static 
or dynamic library raise the same problem (I know there was some 
problems with olders binutils and static link)

So any help is welcome.

Patrick