| layout |
|---|
reference |
|-----------------|-----------------|
| MPI_Init | Initialize MPI. Every rank must call in the beginning. |
| MPI_Finalize | Tear down and free memory. Every rank should call at the end. |
| MPI_Comm_rank | Find the number of the current running process. |
| MPI_Comm_size | Find the total number of ranks started by the user. |
| MPI_Send | Send data to one specified rank. |
| MPI_Recv | Receive data from one specified rank. |
| MPI_Isend | Start sending data to one specified rank. |
| MPI_Irecv | Start receiving data from one specified rank. |
| MPI_Wait | Wait for a transfer to complete. |
| MPI_Test | Check if a transfer is complete. |
| MPI_Barrier | Wait for all the ranks to arrive at this point. |
| MPI_Bcast | Send the same data to all other ranks. |
| MPI_Scatter | Send different data to all other ranks. |
| MPI_Gather | Collect data from all other ranks. |
| MPI_Reduce | Perform a reduction on data from all ranks and communicate the result to one rank. |
| MPI_Allreduce | Perform a reduction on data from all ranks and communicate the result to all ranks. |
|--|--|
| char | MPI_CHAR |
| unsigned char | MPI_UNSIGNED_CHAR |
| signed char | MPI_SIGNED_CHAR |
| short | MPI_SHORT |
| unsigned short | MPI_UNSIGNED_SHORT |
| int | MPI_INT |
| unsigned int | MPI_UNSIGNED |
| long | MPI_LONG |
| unsigned long | MPI_UNSIGNED_LONG |
| float | MPI_FLOAT |
| double | MPI_DOUBLE |
| long double | MPI_LONG_DOUBLE |
|--|--|
| character | MPI_CHARACTER |
| logical | MPI_LOGICAL |
| integer | MPI_INTEGER |
| real | MPI_REAL |
| double precision | MPI_DOUBLE_PRECISION |
| complex | MPI_COMPLEX |
| complex*16 | MPI_DOUBLE_COMPLEX |
| integer*1 | MPI_INTEGER1 |
| integer*2 | MPI_INTEGER2 |
| integer*4 | MPI_INTEGER4 |
| real*2 | MPI_REAL2 |
| real*4 | MPI_REAL4 |
| real*8 | MPI_REAL8 |
{% include links.md %}