SimGrid  3.11
Versatile Simulation of Distributed Systems
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SD Data Types

This section describes the different datatypes provided by SD. More...

Typedefs

typedef xbt_dictelm_t SD_workstation_t
 Workstation datatypeA workstation is a place where a task can be executed. A workstation is represented as a physical resource with computing capabilities and has a name. More...
 
typedef struct SD_link * SD_link_t
 Link datatypeA link is a network node represented as a name, a current bandwidth and a current latency. A route is a list of links between two workstations. More...
 
typedef struct SD_task * SD_task_t
 Task datatypeA task is some computing amount that can be executed in parallel on several workstations. A task may depend on other tasks, this means that the task cannot start until the other tasks are done. Each task has a state indicating whether the task is scheduled, running, done, etc. More...
 
typedef xbt_dictelm_t SD_storage_t
 Storage datatypeTODO PV: comment it ! More...
 

Enumerations

enum  e_SD_workstation_access_mode_t { SD_WORKSTATION_SHARED_ACCESS, SD_WORKSTATION_SEQUENTIAL_ACCESS }
 Workstation access modeBy default, a workstation resource is shared, i.e. several tasks can be executed at the same time on a workstation. The CPU power of the workstation is shared between the running tasks on the workstation. In sequential mode, only one task can use the workstation, and the other tasks wait in a FIFO. More...
 
enum  e_SD_task_state_t {
  SD_NOT_SCHEDULED = 0, SD_SCHEDULABLE = 0x0001, SD_SCHEDULED = 0x0002, SD_RUNNABLE = 0x0004,
  SD_IN_FIFO = 0x0008, SD_RUNNING = 0x0010, SD_DONE = 0x0020, SD_FAILED = 0x0040
}
 Task states. More...
 
enum  e_SD_task_kind_t {
  SD_TASK_NOT_TYPED = 0, SD_TASK_COMM_E2E = 1, SD_TASK_COMP_SEQ = 2, SD_TASK_COMP_PAR_AMDAHL = 3,
  SD_TASK_COMM_PAR_MXN_1D_BLOCK = 4
}
 Task kinds. More...
 

Detailed Description

This section describes the different datatypes provided by SD.

Typedef Documentation

typedef xbt_dictelm_t SD_workstation_t

Workstation datatypeA workstation is a place where a task can be executed. A workstation is represented as a physical resource with computing capabilities and has a name.

See also
Workstations
typedef struct SD_link* SD_link_t

Link datatypeA link is a network node represented as a name, a current bandwidth and a current latency. A route is a list of links between two workstations.

See also
Links
typedef struct SD_task* SD_task_t

Task datatypeA task is some computing amount that can be executed in parallel on several workstations. A task may depend on other tasks, this means that the task cannot start until the other tasks are done. Each task has a state indicating whether the task is scheduled, running, done, etc.

See also
Tasks
typedef xbt_dictelm_t SD_storage_t

Storage datatypeTODO PV: comment it !

See also
SD_storage_management

Enumeration Type Documentation

Workstation access modeBy default, a workstation resource is shared, i.e. several tasks can be executed at the same time on a workstation. The CPU power of the workstation is shared between the running tasks on the workstation. In sequential mode, only one task can use the workstation, and the other tasks wait in a FIFO.

See also
SD_workstation_get_access_mode(), SD_workstation_set_access_mode()
Enumerator
SD_WORKSTATION_SHARED_ACCESS 

Several tasks can be executed at the same time.

SD_WORKSTATION_SEQUENTIAL_ACCESS 

Only one task can be executed, the others wait in a FIFO.

Task states.

See also
Tasks
Enumerator
SD_NOT_SCHEDULED 

Initial state (not valid for SD_watch and SD_unwatch).

SD_SCHEDULABLE 

A task becomes SD_SCHEDULABLE as soon as its dependencies are satisfied.

SD_SCHEDULED 

A task becomes SD_SCHEDULED when you call function SD_task_schedule. SD_simulate will execute it when it becomes SD_RUNNABLE.

SD_RUNNABLE 

A scheduled task becomes runnable is SD_simulate as soon as its dependencies are satisfied.

SD_IN_FIFO 

A runnable task can have to wait in a workstation fifo if the workstation is sequential.

SD_RUNNING 

An SD_RUNNABLE or SD_IN_FIFO becomes SD_RUNNING when it is launched.

SD_DONE 

The task is successfully finished.

SD_FAILED 

A problem occurred during the execution of the task.

Task kinds.

See also
Tasks
Enumerator
SD_TASK_NOT_TYPED 

no specified type

SD_TASK_COMM_E2E 

end to end communication

SD_TASK_COMP_SEQ 

sequential computation

SD_TASK_COMP_PAR_AMDAHL 

parallel computation (Amdahl's law)

SD_TASK_COMM_PAR_MXN_1D_BLOCK 

MxN data redistribution (1D Block distribution)