[mpich-discuss] I can not make MPI recognizes a dual core

[Yessica Brinkmann]

Hello. I am using MPICH2. I am writing my first program in MPI. I
write the sentences:
...
int id;
MPI_Comm_rank (MPI_COMM_WORLD, & id);
if (id == 0)
/ * Master task * /
(
...
)
else
/ * Worker task * /
(
...
)
And I write other sentences. The issue is that it does not recognize a
DualCore processor, and takes the machine as it only has one
processor, indeed, never enters the else.
I would appreciate very much any help.
Sincerely,
Yessica Brinkmann