* libgompd output test
@ 2022-06-29 4:45 Mohamed Atef
2022-06-29 12:21 ` Jakub Jelinek
0 siblings, 1 reply; 3+ messages in thread
From: Mohamed Atef @ 2022-06-29 4:45 UTC (permalink / raw)
To: gcc, Jakub Jelinek
Hello,
for this test case,
1.#include <stdio.h>
2.#include <omp.h>
3.int
4.main()
5.{
6. omp_set_num_threads (5);
7. #pragma omp parallel
8. {
9. int th = omp_get_thread_num ();
10. printf ("i am thread %d\n", th);
11. }
12. return 0;
13.}
Reading symbols from a.out...
OMPD GDB support loaded
Run 'ompd init' to start debugging
(gdb) ompd init
Temporary breakpoint 1 at 0x40115a: file pro.c, line 6.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Temporary breakpoint 1, main () at pro.c:6
6 omp_set_num_threads (5);
Loaded OMPD lib successfully!
(gdb) b 10
Breakpoint 2 at 0x401198: file pro.c, line 10.
(gdb) c
Continuing.
[New Thread 0x7ffff7d45700 (LWP 116224)]
[New Thread 0x7ffff7544700 (LWP 116225)]
[New Thread 0x7ffff6d43700 (LWP 116226)]
[Switching to Thread 0x7ffff7d45700 (LWP 116224)]
Thread 2 "a.out" hit Breakpoint -14, gomp_thread_start
(xdata=0x7fffffffd950) at ../../../gcc/libgomp/config/linux/sem.h:46
46 *sem = value * SEM_INC;
[New Thread 0x7ffff6542700 (LWP 116227)]
[Switching to Thread 0x7ffff7544700 (LWP 116225)]
Thread 3 "a.out" hit Breakpoint -14, gomp_thread_start
(xdata=0x7fffffffd9d0) at ../../../gcc/libgomp/config/linux/sem.h:46
46 *sem = value * SEM_INC;
[Switching to Thread 0x7ffff6d43700 (LWP 116226)]
Thread 4 "a.out" hit Breakpoint -14, gomp_thread_start
(xdata=0x7fffffffda50) at ../../../gcc/libgomp/config/linux/sem.h:46
46 *sem = value * SEM_INC;
[Switching to Thread 0x7ffff6542700 (LWP 116227)]
Thread 5 "a.out" hit Breakpoint -14, gomp_thread_start
(xdata=0x7fffffffdad0) at ../../../gcc/libgomp/config/linux/sem.h:46
46 *sem = value * SEM_INC;
Thread 5 "a.out" hit Breakpoint 2, main._omp_fn.0 () at pro.c:10
10 printf ("i am thread %d\n", th);
(gdb) bt
#0 main._omp_fn.0 () at pro.c:10
#1 0x00007ffff7f9dd8e in gomp_thread_start (xdata=<optimized out>) at
../../../gcc/libgomp/team.c:131
#2 0x00007ffff7f48609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#3 0x00007ffff7e6d133 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) ompd icv
Initialized ICV map successfully for checking OMP API values.
ICV Name Scope Value
===============================================================
cancel var address_space 0
max task priority var address_space 0
stack size var address_space 0
debug var address_space 0
OMP_DEBUG address_space enabled
display affinity var address_space 0
affinity format var address_space level %L thread
%i affinity %A
affinity format len var address_space 0
wait policy var address_space 4294967295
num teams var address_space 0
teams thread limit var address_space 0
spin count var address_space 300000
num proc var address_space 8
throttled spin count var address_space 100
managed threads var address_space 5
END
the output of icv is for global icvs and environment variables are set.
The output may be mangled by the mailer.
How is this output?
The thread_handle patch is ready and will be under review today.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: libgompd output test
2022-06-29 4:45 libgompd output test Mohamed Atef
@ 2022-06-29 12:21 ` Jakub Jelinek
2022-06-29 12:52 ` Mohamed Atef
0 siblings, 1 reply; 3+ messages in thread
From: Jakub Jelinek @ 2022-06-29 12:21 UTC (permalink / raw)
To: Mohamed Atef; +Cc: gcc
On Wed, Jun 29, 2022 at 06:45:51AM +0200, Mohamed Atef wrote:
> for this test case,
>
> 1.#include <stdio.h>
> 2.#include <omp.h>
> 3.int
> 4.main()
> 5.{
> 6. omp_set_num_threads (5);
> 7. #pragma omp parallel
> 8. {
> 9. int th = omp_get_thread_num ();
> 10. printf ("i am thread %d\n", th);
> 11. }
> 12. return 0;
> 13.}
You can also use OMP_DISPLAY_ENV=verbose in the environment
to see how it is printed by the runtime.
> Reading symbols from a.out...
> OMPD GDB support loaded
> Run 'ompd init' to start debugging
> (gdb) ompd init
> Temporary breakpoint 1 at 0x40115a: file pro.c, line 6.
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
>
> Temporary breakpoint 1, main () at pro.c:6
> 6 omp_set_num_threads (5);
> Loaded OMPD lib successfully!
Is the GDB OMPD patch available somewhere?
> (gdb) b 10
> Breakpoint 2 at 0x401198: file pro.c, line 10.
> (gdb) c
> Continuing.
> [New Thread 0x7ffff7d45700 (LWP 116224)]
> [New Thread 0x7ffff7544700 (LWP 116225)]
> [New Thread 0x7ffff6d43700 (LWP 116226)]
> [Switching to Thread 0x7ffff7d45700 (LWP 116224)]
>
> Thread 2 "a.out" hit Breakpoint -14, gomp_thread_start
> (xdata=0x7fffffffd950) at ../../../gcc/libgomp/config/linux/sem.h:46
> 46 *sem = value * SEM_INC;
> [New Thread 0x7ffff6542700 (LWP 116227)]
> [Switching to Thread 0x7ffff7544700 (LWP 116225)]
>
> Thread 3 "a.out" hit Breakpoint -14, gomp_thread_start
> (xdata=0x7fffffffd9d0) at ../../../gcc/libgomp/config/linux/sem.h:46
> 46 *sem = value * SEM_INC;
> [Switching to Thread 0x7ffff6d43700 (LWP 116226)]
>
> Thread 4 "a.out" hit Breakpoint -14, gomp_thread_start
> (xdata=0x7fffffffda50) at ../../../gcc/libgomp/config/linux/sem.h:46
> 46 *sem = value * SEM_INC;
> [Switching to Thread 0x7ffff6542700 (LWP 116227)]
>
> Thread 5 "a.out" hit Breakpoint -14, gomp_thread_start
> (xdata=0x7fffffffdad0) at ../../../gcc/libgomp/config/linux/sem.h:46
> 46 *sem = value * SEM_INC;
>
> Thread 5 "a.out" hit Breakpoint 2, main._omp_fn.0 () at pro.c:10
> 10 printf ("i am thread %d\n", th);
> (gdb) bt
> #0 main._omp_fn.0 () at pro.c:10
> #1 0x00007ffff7f9dd8e in gomp_thread_start (xdata=<optimized out>) at
> ../../../gcc/libgomp/team.c:131
> #2 0x00007ffff7f48609 in start_thread (arg=<optimized out>) at
> pthread_create.c:477
> #3 0x00007ffff7e6d133 in clone () at
> ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
> (gdb) ompd icv
> Initialized ICV map successfully for checking OMP API values.
> ICV Name Scope Value
> ===============================================================
> cancel var address_space 0
> max task priority var address_space 0
> stack size var address_space 0
> debug var address_space 0
> OMP_DEBUG address_space enabled
> display affinity var address_space 0
> affinity format var address_space level %L thread
> %i affinity %A
This ought to be IMHO printed as a string literal, so "level %L thread %i affinity %A"
> affinity format len var address_space 0
> wait policy var address_space 4294967295
> num teams var address_space 0
> teams thread limit var address_space 0
> spin count var address_space 300000
> num proc var address_space 8
> throttled spin count var address_space 100
> managed threads var address_space 5
And also, it would be nice if it was clear which ICVs are GCC implementation
specific and which are standard (the spin count vars are non-standard).
Also, the names of ICVs in the standard are with hyphens, so perhaps print
cancel-var, max-task-priority-var etc.?
Jakub
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: libgompd output test
2022-06-29 12:21 ` Jakub Jelinek
@ 2022-06-29 12:52 ` Mohamed Atef
0 siblings, 0 replies; 3+ messages in thread
From: Mohamed Atef @ 2022-06-29 12:52 UTC (permalink / raw)
To: Jakub Jelinek; +Cc: gcc
On Wed, Jun 29, 2022 at 2:21 PM Jakub Jelinek <jakub@redhat.com> wrote:
> On Wed, Jun 29, 2022 at 06:45:51AM +0200, Mohamed Atef wrote:
> > for this test case,
> >
> > 1.#include <stdio.h>
> > 2.#include <omp.h>
> > 3.int
> > 4.main()
> > 5.{
> > 6. omp_set_num_threads (5);
> > 7. #pragma omp parallel
> > 8. {
> > 9. int th = omp_get_thread_num ();
> > 10. printf ("i am thread %d\n", th);
> > 11. }
> > 12. return 0;
> > 13.}
>
> You can also use OMP_DISPLAY_ENV=verbose in the environment
> to see how it is printed by the runtime.
>
> > Reading symbols from a.out...
> > OMPD GDB support loaded
> > Run 'ompd init' to start debugging
> > (gdb) ompd init
> > Temporary breakpoint 1 at 0x40115a: file pro.c, line 6.
> > [Thread debugging using libthread_db enabled]
> > Using host libthread_db library
> "/lib/x86_64-linux-gnu/libthread_db.so.1".
> >
> > Temporary breakpoint 1, main () at pro.c:6
> > 6 omp_set_num_threads (5);
> > Loaded OMPD lib successfully!
>
> Is the GDB OMPD patch available somewhere?
>
No, this is the GDB plugin.
>
> > (gdb) b 10
> > Breakpoint 2 at 0x401198: file pro.c, line 10.
> > (gdb) c
> > Continuing.
> > [New Thread 0x7ffff7d45700 (LWP 116224)]
> > [New Thread 0x7ffff7544700 (LWP 116225)]
> > [New Thread 0x7ffff6d43700 (LWP 116226)]
> > [Switching to Thread 0x7ffff7d45700 (LWP 116224)]
> >
> > Thread 2 "a.out" hit Breakpoint -14, gomp_thread_start
> > (xdata=0x7fffffffd950) at ../../../gcc/libgomp/config/linux/sem.h:46
> > 46 *sem = value * SEM_INC;
> > [New Thread 0x7ffff6542700 (LWP 116227)]
> > [Switching to Thread 0x7ffff7544700 (LWP 116225)]
> >
> > Thread 3 "a.out" hit Breakpoint -14, gomp_thread_start
> > (xdata=0x7fffffffd9d0) at ../../../gcc/libgomp/config/linux/sem.h:46
> > 46 *sem = value * SEM_INC;
> > [Switching to Thread 0x7ffff6d43700 (LWP 116226)]
> >
> > Thread 4 "a.out" hit Breakpoint -14, gomp_thread_start
> > (xdata=0x7fffffffda50) at ../../../gcc/libgomp/config/linux/sem.h:46
> > 46 *sem = value * SEM_INC;
> > [Switching to Thread 0x7ffff6542700 (LWP 116227)]
> >
> > Thread 5 "a.out" hit Breakpoint -14, gomp_thread_start
> > (xdata=0x7fffffffdad0) at ../../../gcc/libgomp/config/linux/sem.h:46
> > 46 *sem = value * SEM_INC;
> >
> > Thread 5 "a.out" hit Breakpoint 2, main._omp_fn.0 () at pro.c:10
> > 10 printf ("i am thread %d\n", th);
> > (gdb) bt
> > #0 main._omp_fn.0 () at pro.c:10
> > #1 0x00007ffff7f9dd8e in gomp_thread_start (xdata=<optimized out>) at
> > ../../../gcc/libgomp/team.c:131
> > #2 0x00007ffff7f48609 in start_thread (arg=<optimized out>) at
> > pthread_create.c:477
> > #3 0x00007ffff7e6d133 in clone () at
> > ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
> > (gdb) ompd icv
> > Initialized ICV map successfully for checking OMP API values.
> > ICV Name Scope Value
> > ===============================================================
> > cancel var address_space 0
> > max task priority var address_space 0
> > stack size var address_space 0
> > debug var address_space 0
> > OMP_DEBUG address_space enabled
> > display affinity var address_space 0
> > affinity format var address_space level %L
> thread
> > %i affinity %A
>
> This ought to be IMHO printed as a string literal, so "level %L thread %i
> affinity %A"
>
> > affinity format len var address_space 0
> > wait policy var address_space 4294967295
> > num teams var address_space 0
> > teams thread limit var address_space 0
> > spin count var address_space 300000
> > num proc var address_space 8
> > throttled spin count var address_space 100
> > managed threads var address_space 5
>
> And also, it would be nice if it was clear which ICVs are GCC
> implementation
> specific and which are standard (the spin count vars are non-standard).
> Also, the names of ICVs in the standard are with hyphens, so perhaps print
> cancel-var, max-task-priority-var etc.?
>
OK, I will fix it in the next patch.
>
> Jakub
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2022-06-29 4:45 libgompd output test Mohamed Atef
2022-06-29 12:21 ` Jakub Jelinek
2022-06-29 12:52 ` Mohamed Atef
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