Virtual processors which can migrate are created by the function bsp_migrate_dup in a similar manner as normal virtual processors.
| 1 | int main(int argc, char *argv[]) { |
| 2 |  t_bsp bsp;
|
| 3 | int vprocs = 2;
|
| 4 | bsplib_init( BSPLIB_STDPARAMS, &bsp );
|
| 5 | bsp_migrate_dup( &bsp, vprocs, bsp_main, NULL, true);
|
| 6 | bsplib_done();
|
| 7 | return 0;
|
| 8 | } |
This program starts the function bsp_main twice on each node, creating two times bsp_nprocs virtual processors at all.
The additional parameter after the function name is passed as the second argument to the function.
| 1 | void bsp_main( t_bsp* bsp, void* param ) { |
| 2 | /* do some work */
|
| 3 | bsp_migrate_done( bsp );
|
| 4 | } |
The migration is executed during the synchronisation only, so you may open files,
but you have to close them before calling bsp_sync.