Missing compile-time optimization information

Accelerated Computing HPC Compilers nvc, nvc++ and nvfortran
1

Hi Matt,

Configuration: Driver Version: 550.90.07 CUDA Version: 12.4

I am encountering a strange issue during compilation. I have a program with the following barebones structure:

1. SUBROUTINE some_subroutine
2.   IF (condition) THEN
3.     !$omp parallel
4.     !$acc stuff
5.     !$omp end parallel
6.   ELSE
7.     !$omp parallel
8.     !$acc stuff
9.     !$omp end parallel
10.   END IF
11. END SUBROUTINE some_subroutine

When compiling (-Minfo=accel,mp), only information about the first openmp parallel section (and the contained openacc directives, line 4) is displayed, and nothing about the openacc directives in the 2nd openmp section (line 8). When I comment out lines 2-6, 10, optimization information for line 8 does get displayed.

Is this a compiler bug or am I not setting some compiler flags to display all the acc and omp optimization info?

Cheers,
Jyoti

2

Hmm, I’m not sure.

Is the conditional always true? If so, and the compiler can detect this, it could be removing the else case.

If not, can you provide a reproducing example?

3

The conditional can be .FALSE.

Let me work on a reproducing example.

Cheers,
Jyoti