- int num_core = NUM_CORE;
-
- MPI_User_function *uop;
-#ifndef MPICH2
- struct MPIR_OP *op_ptr = MPIR_ToPointer(op);
- uop = (MPI_User_function *) op_ptr->op;
-#else
- uop = MPIR_Op_table[op % 16 - 1];
-#endif
+ int num_core = simcall_host_get_core(SIMIX_host_self());
+ // do we use the default one or the number of cores in the platform ?
+ // if the number of cores is one, the platform may be simulated with 1 node = 1 core
+ if (num_core == 1) num_core = NUM_CORE;