Changes between Version 22 and Version 23 of C++ API

Timestamp:

09/12/13 12:20:48 (11 years ago)

Author:

jorisborgdorff

Comment:

--

C++ API

@@ -86 +86 @@
 === MUSCLE and MPI ===
 
-When using MPI, MUSCLE calls only do their operations in rank 0, calls from other ranks are ignored. This means that the data should be gathered with MPI before a `MUSCLE_Send` and broadcasted after a `MUSCLE_Receive`. The functions `MUSCLE_Kernel_Name`, `MUSCLE_Get_Property`, and `MUSCLE_Will_Stop` cannot give a meaningful result in other ranks than rank 0 so
+Depending on the MPI implementation, MUSCLE_Init should be called before MPI_Init. This may generate a warning about forking, but as long as the submodel produces correct results this can be ignored. When using MPI, MUSCLE calls only do their operations in rank 0, calls from other ranks are ignored. This means that the data should be gathered with MPI before a `MUSCLE_Send` and broadcasted after a `MUSCLE_Receive`. The functions `MUSCLE_Kernel_Name`, `MUSCLE_Get_Property`, and `MUSCLE_Will_Stop` cannot give a meaningful result in other ranks than rank 0 so
 calling them from other ranks results in undefined behavior (and should be prevented). Their result can then be propagated with MPI in your code, if needed.