Hi all,
Up to now, I have been working with LAM-6.5.6 distribution. My
applications run right in it.
Last week, I updated to LAM-7.1.1 and I began to have problems with signals.
Next, I show a simple code to explain the problem:
-----------------------------------------
void unlockFixedSlave()
{
printf("Recieved signal\n");
}
int main(argc,argv)
int argc;
char *argv[];
{
int pid, NA, my_id;
MPI_Init(&argc,&argv);
MPI_Comm_rank(MPI_COMM_WORLD,&my_id);
MPI_Comm_size(MPI_COMM_WORLD,&NA);
NA--;
pid= fork();
switch(pid) {
case 0: // SON
{
if (kinit(PRCMD) != 0) {
printf("Couldn't attach to the lamd. Bye!\n");
exit(1);
}
else
printf("I am attached to the lamd\n");
printf("SON PROCESS id= %d\n",getpid());
if (kdoom(getppid(),LAM_SIGA) == (ENOTPROCESS || EINVAL) )
printf("LAM_SIGA signal has NOT been sent\n");
else
printf("LAM_SIGA signal has been sent by son\n");
break;
}
default: // FATHER
{
lam_ksignal(LAM_SIGA,unlockFixedSlave);
printf("After lam_ksignal\n");
while (1);
}
}
MPI_Finalize();
}
-----------------------------------------
Father process installs a handler for LAM_SIGA (unlockFixedSlave), and
son process sent LAM_SIGA signal to father process using 'kdoom' function.
With LAM-6.5.6 the message "Recieved signal" (unlockFixedSlave function)
is show.
With LAM-7.1.1 the message is not show, but the signal was sent.
Therefore, I think the signal is not caught.
Could anybody say me what is the problem and how does it can be solve?
Next I show mpirun call and results for each distribution:
-WITH LAM 6.5.6
dsanchez_at_beltram:~/kk$ hcc -I/usr/src/lam-6.5.6/share/include
pruebasignal.c -o prueba
dsanchez_at_beltram:~/kk$ mpirun -v -np 1 prueba
756 prueba running on n0 (o)
After lam_ksignal
I am attached to the lamd
SON PROCESS id= 757
LAM_SIGA signal has been sent by son
Recieved signal
-WITH LAM 7.1.1
dsanchez_at_beltram:~/kk$ hcc -I/usr/src/lam-7.1.1/share/include
pruebasignal.c -o prueba
dsanchez_at_beltram:~/kk$ mpirun -v -sigs -np 1 prueba
769 prueba running on n0 (o)
After lam_ksignal
I am attached to the lamd
SON PROCESS id= 770
LAM_SIGA signal has been sent by son
dsanchez_at_beltram:~/kk$
Regards,
David
--
******************************
David Sánchez Rodríguez
Departamento de Ingeniería Telemática
Edif. Telecomunicaciones, Pab. C, Desp. 237
Campus Universitario de Tafira s/n
35017 - Las Palmas de Gran Canaria
SPAIN
TLF: 928-458047
FAX: 928-451380
E-Mail: dsanchez_at_[hidden]
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