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