-/* Copyright (c) 2004-2015. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2004-2016. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
simdata->source = nullptr;
simdata->priority = 1.0;
simdata->bound = 0;
- simdata->affinity_mask_db = xbt_dict_new_homogeneous(nullptr);
simdata->rate = -1.0;
simdata->isused = 0;
{
msg_task_t task = MSG_task_create(name, 0, 0, data);
simdata_task_t simdata = task->simdata;
- int i;
/* Simulator Data specific to parallel tasks */
simdata->host_nb = host_nb;
simdata->flops_parallel_amount = flops_amount;
simdata->bytes_parallel_amount = bytes_amount;
- for (i = 0; i < host_nb; i++)
+ for (int i = 0; i < host_nb; i++)
simdata->host_list[i] = host_list[i];
return task;
*/
void *MSG_task_get_data(msg_task_t task)
{
- xbt_assert((task != nullptr), "Invalid parameter");
return (task->data);
}
*/
void MSG_task_set_data(msg_task_t task, void *data)
{
- xbt_assert((task != nullptr), "Invalid parameter");
task->data = data;
}
*/
msg_process_t MSG_task_get_sender(msg_task_t task)
{
- xbt_assert(task, "Invalid parameters");
- return (static_cast<simdata_task_t> (task->simdata)->sender);
+ return task->simdata->sender;
}
/** \ingroup m_task_management
*/
msg_host_t MSG_task_get_source(msg_task_t task)
{
- xbt_assert(task, "Invalid parameters");
- return (static_cast<simdata_task_t> (task->simdata)->source);
+ return task->simdata->source;
}
/** \ingroup m_task_management
*/
const char *MSG_task_get_name(msg_task_t task)
{
- xbt_assert(task, "Invalid parameters");
return task->name;
}
*/
void MSG_task_set_name(msg_task_t task, const char *name)
{
- xbt_assert(task, "Invalid parameters");
task->name = xbt_strdup(name);
}
*/
msg_error_t MSG_task_destroy(msg_task_t task)
{
- xbt_assert((task != nullptr), "Invalid parameter");
-
if (task->simdata->isused) {
/* the task is being sent or executed: cancel it first */
MSG_task_cancel(task);
*/
void MSG_task_set_priority(msg_task_t task, double priority)
{
- xbt_assert((task != nullptr) && (task->simdata != nullptr), "Invalid parameter");
task->simdata->priority = 1 / priority;
if (task->simdata->compute)
- simcall_execution_set_priority(task->simdata->compute,
- task->simdata->priority);
+ simcall_execution_set_priority(task->simdata->compute, task->simdata->priority);
}
/** \ingroup m_task_management
*/
void MSG_task_set_bound(msg_task_t task, double bound)
{
- xbt_assert(task, "Invalid parameter");
- xbt_assert(task->simdata, "Invalid parameter");
-
if (bound < 1e-12) /* close enough to 0 without any floating precision surprise */
XBT_INFO("bound == 0 means no capping (i.e., unlimited).");
if (task->simdata->compute)
simcall_execution_set_bound(task->simdata->compute, task->simdata->bound);
}
-
-/** \ingroup m_task_management
- * \brief Changes the CPU affinity of a computation task.
- *
- * When pinning the given task to the first CPU core of the given host, use 0x01 for the mask value. Each bit of the
- * mask value corresponds to each CPU core. See taskset(1) on Linux.
- *
- * \param task a target task
- * \param host the host having a multi-core CPU
- * \param mask the bit mask of a new CPU affinity setting for the task
- *
- * Usage:
- * 0. Define a host with multiple cores.
- * \<host id="PM0" power="1E8" core="2"/\>
- *
- * 1. Pin a given task to the first CPU core of a host.
- * MSG_task_set_affinity(task, pm0, 0x01);
- *
- * 2. Pin a given task to the third CPU core of a host. Turn on the third bit of the mask.
- * MSG_task_set_affinity(task, pm0, 0x04); // 0x04 == 100B
- *
- * 3. Pin a given VM to the first CPU core of a host.
- * MSG_vm_set_affinity(vm, pm0, 0x01);
- *
- * See examples/msg/cloud/multicore.c for more information.
- *
- * Note:
- * 1. The current code does not allow an affinity of a task to multiple cores.
- * The mask value 0x03 (i.e., a given task will be executed on the first core or the second core) is not allowed.
- * The mask value 0x01 or 0x02 works. See cpu_cas01.c for details.
- *
- * 2. It is recommended to first compare simulation results in both the Lazy and Full calculation modes
- * (using --cfg=cpu/optim:Full or not). Fix cpu_cas01.c if you find wrong results in the Lazy mode.
- */
-void MSG_task_set_affinity(msg_task_t task, msg_host_t host, unsigned long mask)
-{
- xbt_assert(task, "Invalid parameter");
- xbt_assert(task->simdata, "Invalid parameter");
-
- if (mask == 0) {
- /* 0 means clear */
- /* We need remove_ext() not throwing exception. */
- void *ret = xbt_dict_get_or_null_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(msg_host_t));
- if (ret != nullptr)
- xbt_dict_remove_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(host));
- } else
- xbt_dict_set_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(host), (void *)(uintptr_t) mask, nullptr);
-
- /* We set affinity data of this task. If the task is being executed, we actually change the affinity setting of the
- * task. Otherwise, this change will be applied when the task is executed. */
- if (!task->simdata->compute) {
- /* task is not yet executed */
- XBT_INFO("set affinity(0x%04lx@%s) for %s (not active now)", mask, MSG_host_get_name(host),
- MSG_task_get_name(task));
- return;
- }
-
- simgrid::simix::Exec *compute = task->simdata->compute;
- msg_host_t host_now = compute->host; // simix_private.h is necessary
- if (host_now != host) {
- /* task is not yet executed on this host */
- XBT_INFO("set affinity(0x%04lx@%s) for %s (not active now)", mask, MSG_host_get_name(host),
- MSG_task_get_name(task));
- return;
- }
-
- /* task is being executed on this host. so change the affinity now */
- /* check it works. remove me if it works. */
- xbt_assert(static_cast<unsigned long>((uintptr_t) xbt_dict_get_or_null_ext(task->simdata->affinity_mask_db,
- (char*)(host), sizeof(msg_host_t))) == mask);
- XBT_INFO("set affinity(0x%04lx@%s) for %s", mask, MSG_host_get_name(host), MSG_task_get_name(task));
- simcall_execution_set_affinity(task->simdata->compute, host, mask);
-}
