自动确定作用域的详细结果显示在编译器注释中。在使用 -g 选项编译源时，编译器将生成内联注释。可以使用 er_src 命令查看该注释，如以下示例所示。er_src 命令作为 Oracle Developer Studio 软件的一部分提供。有关更多信息，请参见 er_src(1) 手册页或Oracle Developer Studio 12.5：性能分析器。
要快速检查自动确定作用域的结果，请使用 -xvpara 选项进行编译。使用 —xvpara 进行编译可大体确定针对特定构造的自动确定作用域是否成功。
示例 16 使用 -xvpara 检查自动确定作用域的结果% cat source1.f
INTEGER X(100), Y(100), I, T
C$OMP PARALLEL DO DEFAULT(__AUTO)
DO I=1, 100
T = Y(I)
X(I) = T*T
END DO
C$OMP END PARALLEL DO
END
% f95 -xopenmp -xO3 -xvpara -c -g source1.f
"source1.f", line 2: Autoscoping for OpenMP construct succeeded.
Check er_src for details
如果针对特定构造的自动确定作用域失败，指定 -xvpara 时将发出警告消息，如以下示例所示。
示例 17 使用 -xvpara 时自动确定作用域失败% cat source2.f
INTEGER X(100), Y(100), I, T
C$OMP PARALLEL DO DEFAULT(__AUTO)
DO I=1, 100
T = Y(I)
CALL FOO(X)
X(I) = T*T
END DO
C$OMP END PARALLEL DO
END
% f95 -xopenmp -xO3 -xvpara -c -g source2.f
"source2.f", line 2: Warning: Autoscoping for OpenMP construct failed.
Check er_src for details. Parallel region will be executed by
a single thread.
有关自动确定作用域的更多详细信息将显示在 er_src 显示的编译器注释中，如以下示例所示。
示例 18 使用 er_src 显示的自动确定作用域详细结果% er_src source2.o
Source file: source2.f
Object file: source2.o
Load Object: source2.o
1. INTEGER X(100), Y(100), I, T
Source OpenMP region below has tag R1
Variables autoscoped as SHARED in R1: y
Variables autoscoped as PRIVATE in R1: t, i
Variables treated as shared because they cannot be autoscoped in R1: x
R1 will be executed by a single thread because
autoscoping for some variable s was not successful
Private variables in R1: i, t
Shared variables in R1: y, x
2. C$OMP PARALLEL DO DEFAULT(__AUTO)
Source loop below has tag L1
L1 parallelized by explicit user directive
L1 autoparallelized
L1 parallel loop-body code placed in function _$d1A2.MAIN_
along with 0 inner loops
L1 could not be pipelined because it contains calls
3. DO I=1, 100
4. T = Y(I)
5. CALL FOO(X)
6. X(I) = T*T
7. END DO
8. C$OMP END PARALLEL DO
9. END
10.