open (UNIT=8, file = 'iterate.dat') not supported

Accelerated Computing HPC Compilers Legacy PGI Compilers
1

Hello guys, I have a simple code with open function and I was trying to compile with openacc it gives me errors. Could anyone help with how I can get rid of issue? Thanks!

        subroutine test
!$acc routine
            open (UNIT=88, file = 'iterate.dat', status = 'unknown')
            itfile = 88
        end subroutine




~/tsctx/src$ pgfortran -acc -Minline -Minfo -ta=tesla:cc70 -c -w -O3 test2.F
PGF90-S-0000-Internal compiler error. Call in OpenACC region to support routine - pgf90io_open2003 (test2.F: 5)
PGF90-S-0155-Compiler failed to translate accelerator region (see -Minfo messages)  (test2.F: 1)
test:
      1, Generating acc routine seq
         Generating Tesla code
          3, Accelerator restriction: unsupported call to support routine 'pgf90io_open2003'
  0 inform,   0 warnings,   2 severes, 0 fatal for test
2

Oh I see the accelerated regions does not support I/O operation.

3

Oh I see the accelerated regions does not support I/O operation.

Correct. There’s some limited support for unformatted printing to stdout in Fortran, but the GPU doesn’t support reading and writing from files. Hence, it’s not something we’ve been able to add to OpenACC.

-Mat