IO system descriptor structure. More...
#include <pio.h>
Collaboration diagram for iosystem_desc_t:
Public Attributes | |
| int | iosysid |
| The ID of this iosystem_desc_t. More... | |
| MPI_Comm | union_comm |
| This is an MPI intra communicator that includes all the tasks in both the IO and the computation communicators. | |
| MPI_Comm | io_comm |
| This is an MPI intra communicator that includes all the tasks involved in IO. | |
| MPI_Comm | comp_comm |
| This is an MPI intra communicator that includes all the tasks involved in computation. | |
| MPI_Comm | intercomm |
| This is an MPI inter communicator between IO communicator and computation communicator, only used for async mode. | |
| MPI_Comm | my_comm |
| This is a copy (but not an MPI copy) of either the comp (for non-async) or the union (for async) communicator. | |
| int | num_iotasks |
| The number of tasks in the IO communicator. | |
| int | num_comptasks |
| The number of tasks in the computation communicator. | |
| int | num_uniontasks |
| The number of tasks in the union communicator (will be num_comptasks for non-async, num_comptasks + num_iotasks for async). | |
| int | union_rank |
| Rank of this task in the union communicator. | |
| int | comp_rank |
| The rank of this process in the computation communicator, or -1 if this process is not part of the computation communicator. | |
| int | io_rank |
| The rank of this process in the IO communicator, or -1 if this process is not part of the IO communicator. | |
| int | iomaster |
| Set to MPI_ROOT if this task is the master of IO communicator, 0 otherwise. | |
| int | compmaster |
| Set to MPI_ROOT if this task is the master of comp communicator, 0 otherwise. | |
| int | ioroot |
| Rank of IO root task (which is rank 0 in io_comm) in the union communicator. | |
| int | comproot |
| Rank of computation root task (which is rank 0 in comm_comms[cmp]) in the union communicator. | |
| int * | ioranks |
| An array of the ranks of all IO tasks within the union communicator. | |
| int * | compranks |
| An array of the ranks of all computation tasks within the union communicator. | |
| int | error_handler |
| Controls handling errors. | |
| int | default_rearranger |
| The rearranger decides which parts of a distributed array are handled by which IO tasks. | |
| bool | async |
| True if asynchronous interface is in use. | |
| bool | ioproc |
| True if this task is a member of the IO communicator. | |
| bool | compproc |
| True if this task is a member of a computation communicator. | |
| MPI_Info | info |
| MPI Info object. | |
| int | comp_idx |
| Index of this component in the list of components. | |
| rearr_opt_t | rearr_opts |
| Rearranger options. | |
| struct iosystem_desc_t * | next |
| Pointer to the next iosystem_desc_t in the list. | |
Detailed Description
IO system descriptor structure.
This structure contains the general IO subsystem data and MPI structure
Member Data Documentation
◆ iosysid
| int iosystem_desc_t::iosysid |
The ID of this iosystem_desc_t.
This will be obtained by calling PIOc_Init_Intercomm() or PIOc_Init_Intracomm().
The documentation for this struct was generated from the following file:
