int main(int argc, char **argv)
{
const char *platform_file;
const SD_workstation_t *workstations;
int ws_nr;
SD_workstation_t w1 = NULL;
SD_workstation_t w2 = NULL;
const char *name1, *name2;
int i, j, k;
/* initialisation of SD */
SD_init(&argc, argv);
/* xbt_log_control_set("sd.thres=debug"); */
if (argc < 2) {
XBT_INFO("Usage: %s platform_file", argv[0]);
XBT_INFO("example: %s sd_platform.xml", argv[0]);
exit(1);
}
/* creation of the environment */
platform_file = argv[1];
SD_create_environment(platform_file);
/* test the estimation functions */
workstations = SD_workstation_get_list();
ws_nr = SD_workstation_get_number();
/* Show routes between all workstation */
for (i = 0; i < ws_nr; i++) {
for (j = 0; j < ws_nr; j++) {
const SD_link_t *route;
int route_size;
w1 = workstations[i];
w2 = workstations[j];
name1 = SD_workstation_get_name(w1);
name2 = SD_workstation_get_name(w2);
XBT_INFO("Route between %s and %s:", name1, name2);
route = SD_route_get_list(w1, w2);
route_size = SD_route_get_size(w1, w2);
for (k = 0; k < route_size; k++) {
XBT_INFO("\tLink %s: latency = %f, bandwidth = %f",
SD_link_get_name(route[k]),
SD_link_get_current_latency(route[k]),
SD_link_get_current_bandwidth(route[k]));
}
}
}
SD_exit();
return 0;
}
int main(int argc, char **argv)
{
/* initialisation of SD */
SD_workstation_t w1, w2;
const SD_workstation_t *workstations;
const SD_link_t *route;
const char *name1;
const char *name2;
int route_size, i, j, k;
int list_size;
#ifdef _XBT_WIN32
setbuf(stderr, NULL);
setbuf(stdout, NULL);
#else
setvbuf(stdout, NULL, _IOLBF, 0);
#endif
SD_init(&argc, argv);
/* creation of the environment */
SD_create_environment(argv[1]);
printf("Workstation number: %d, link number: %d\n",
SD_workstation_get_number(), SD_link_get_number());
if (argc >= 3) {
if (!strcmp(argv[2], "ONE_LINK")) {
workstations = SD_workstation_get_list();
w1 = workstations[0];
w2 = workstations[1];
name1 = SD_workstation_get_name(w1);
name2 = SD_workstation_get_name(w2);
printf("Route between %s and %s\n", name1, name2);
route = SD_route_get_list(w1, w2);
route_size = SD_route_get_size(w1, w2);
printf("Route size %d\n", route_size);
for (i = 0; i < route_size; i++) {
printf(" Link %s: latency = %f, bandwidth = %f\n",
SD_link_get_name(route[i]),
SD_link_get_current_latency(route[i]),
SD_link_get_current_bandwidth(route[i]));
}
printf("Route latency = %f, route bandwidth = %f\n",
SD_route_get_current_latency(w1, w2),
SD_route_get_current_bandwidth(w1, w2));
}
if (!strcmp(argv[2], "FULL_LINK")) {
workstations = SD_workstation_get_list();
list_size = SD_workstation_get_number();
for (i = 0; i < list_size; i++) {
w1 = workstations[i];
name1 = SD_workstation_get_name(w1);
for (j = 0; j < list_size; j++) {
w2 = workstations[j];
name2 = SD_workstation_get_name(w2);
printf("Route between %s and %s\n", name1, name2);
route = SD_route_get_list(w1, w2);
route_size = SD_route_get_size(w1, w2);
printf(" Route size %d\n", route_size);
for (k = 0; k < route_size; k++) {
printf(" Link %s: latency = %f, bandwidth = %f\n",
SD_link_get_name(route[k]),
SD_link_get_current_latency(route[k]),
SD_link_get_current_bandwidth(route[k]));
}
printf(" Route latency = %f, route bandwidth = %f\n",
SD_route_get_current_latency(w1, w2),
SD_route_get_current_bandwidth(w1, w2));
}
}
}
if (!strcmp(argv[2], "PROP")) {
printf("SG_TEST_mem: %s\n",
SD_workstation_get_property_value(SD_workstation_get_by_name("host1"),
"SG_TEST_mem")
);
printf("Author: %s\n", SD_as_router_get_property_value("AS0", "author"));
printf("AS1: %s\n", SD_as_router_get_property_value("AS1", "name"));
printf("AS2: %s\n", SD_as_router_get_property_value("AS2", "name"));
}
}
SD_exit();
return 0;
}
/*
* Return a rough estimation of the time needed to transfer 'size' bytes of data
* between two allocated tasks 'src' and 'dst'. Two cases are distinguished:
* - both allocations are strictly identical, then the route from the first
* workstation to itself (down link, backbone, up link) is considered,
* - Otherwise, the function first find a pair of distinct workstations from
* the src and dst allocations.
* In both cases, the estimation is the sum of
* - the time to send (1/src_allocation_size)th of the data on the private down
* link of one of the workstation in 'src_allocation'
* - the maximum time to send the entire data over each link in between
* - the time to send (1/dst_allocation_size)th of the data on the private up
* link of one of the workstation in 'dst_allocation'
* - the sum of the link's latencies on the route
* This estimation doesn't take concurrent transfers (and then bandwidth sharing
* between them) into account. Transfer times are thus underestimated.
*/
double SD_task_estimate_transfer_time_from(SD_task_t src, SD_task_t dst,
double size){
int src_allocation_size, dst_allocation_size;
SD_workstation_t *src_allocation, *dst_allocation;
const SD_link_t* route=NULL;
int route_size;
double transfer_time =0.0;
int src_index = -1, dst_index=-1;
int i, s, d;;
src_allocation_size = SD_task_get_allocation_size(src);
src_allocation = SD_task_get_allocation(src);
dst_allocation_size = SD_task_get_allocation_size(dst);
dst_allocation = SD_task_get_allocation(dst);
qsort((void *)src_allocation,src_allocation_size, sizeof(SD_workstation_t),
nameCompareWorkstations);
qsort((void *)dst_allocation,dst_allocation_size, sizeof(SD_workstation_t),
nameCompareWorkstations);
i = 0;
if (src_allocation_size == dst_allocation_size) {
for (s = 0; s < src_allocation_size; s++) {
for (d = 0; d < dst_allocation_size; d++) {
if (!strcmp(SD_workstation_get_name (src_allocation[s]),
SD_workstation_get_name (dst_allocation[d]))) {
i++;
break;
}
}
if (i <= s)
break;
}
}
if (i == src_allocation_size) {
/* both configurations are identical. Let just consider the transfer between
* the first workstation of each set */
route= SD_route_get_list (src_allocation[0], dst_allocation[0]);
route_size = SD_route_get_size(src_allocation[0], dst_allocation[0]);
src_index=dst_index=0;
} else {
/* Found 2 different hosts. The first host belongs to src
and the second one belongs to dst. Then
compute the transfer time walking through the route between
them */
for (s = 0; s < src_allocation_size; s++) {
for (d = 0; d < dst_allocation_size; d++) {
if (strcmp(SD_workstation_get_name (src_allocation[s]),
SD_workstation_get_name (dst_allocation[d]))) {
src_index = s;
dst_index = d;
break;
}
}
if (src_index != -1)
break;
}
route= SD_route_get_list (src_allocation[src_index],
dst_allocation[dst_index]);
route_size = SD_route_get_size(src_allocation[src_index],
dst_allocation[dst_index]);
}
/* first link */
transfer_time = size/
(SD_link_get_current_bandwidth(route[0])*src_allocation_size);
for (i = 1; i < route_size - 1; i++) {
if (transfer_time < (size /
SD_link_get_current_bandwidth(route[i])))
transfer_time = size / SD_link_get_current_bandwidth(route[i]);
}
/* last link */
if (transfer_time < size /
(SD_link_get_current_bandwidth(route[route_size-1]) *
dst_allocation_size)){
transfer_time = size /
(SD_link_get_current_bandwidth(route[route_size-1]) *
dst_allocation_size);
}
transfer_time +=
SD_route_get_current_latency (src_allocation[src_index],
dst_allocation[dst_index]);
XBT_VERB("Estimated transfer time between tasks '%s' and '%s': %.3f",
SD_task_get_name(src), SD_task_get_name(dst),transfer_time);
return transfer_time;
}
int main(int argc, char **argv)
{
sg_host_t host_list[2];
double computation_amount[2];
double communication_amount[4] = { 0 };
/* initialization of SD */
SD_init(&argc, argv);
xbt_assert(argc > 1, "Usage: %s platform_file\n\nExample: %s two_clusters.xml", argv[0], argv[0]);
SD_create_environment(argv[1]);
/* test the estimation functions */
const sg_host_t *hosts = sg_host_list();
sg_host_t h1 = hosts[0];
sg_host_t h2 = hosts[1];
const char *name1 = sg_host_get_name(h1);
const char *name2 = sg_host_get_name(h2);
double comp_amount1 = 2000000;
double comp_amount2 = 1000000;
double comm_amount12 = 2000000;
double comm_amount21 = 3000000;
XBT_INFO("Computation time for %f flops on %s: %f", comp_amount1, name1, comp_amount1/sg_host_speed(h1));
XBT_INFO("Computation time for %f flops on %s: %f", comp_amount2, name2, comp_amount2/sg_host_speed(h2));
XBT_INFO("Route between %s and %s:", name1, name2);
SD_link_t *route = SD_route_get_list(h1, h2);
int route_size = SD_route_get_size(h1, h2);
for (int i = 0; i < route_size; i++)
XBT_INFO(" Link %s: latency = %f, bandwidth = %f", sg_link_name(route[i]), sg_link_latency(route[i]),
sg_link_bandwidth(route[i]));
xbt_free(route);
XBT_INFO("Route latency = %f, route bandwidth = %f", SD_route_get_latency(h1, h2), SD_route_get_bandwidth(h1, h2));
XBT_INFO("Communication time for %f bytes between %s and %s: %f", comm_amount12, name1, name2,
SD_route_get_latency(h1, h2) + comm_amount12 / SD_route_get_bandwidth(h1, h2));
XBT_INFO("Communication time for %f bytes between %s and %s: %f", comm_amount21, name2, name1,
SD_route_get_latency(h2, h1) + comm_amount21 / SD_route_get_bandwidth(h2, h1));
/* creation of the tasks and their dependencies */
SD_task_t taskA = SD_task_create("Task A", NULL, 10.0);
SD_task_t taskB = SD_task_create("Task B", NULL, 40.0);
SD_task_t taskC = SD_task_create("Task C", NULL, 30.0);
SD_task_t taskD = SD_task_create("Task D", NULL, 60.0);
/* try to attach and retrieve user data to a task */
SD_task_set_data(taskA, static_cast<void*>(&comp_amount1));
if (fabs(comp_amount1 - (*(static_cast<double*>(SD_task_get_data(taskA))))) > 1e-12)
XBT_ERROR("User data was corrupted by a simple set/get");
SD_task_dependency_add(NULL, NULL, taskB, taskA);
SD_task_dependency_add(NULL, NULL, taskC, taskA);
SD_task_dependency_add(NULL, NULL, taskD, taskB);
SD_task_dependency_add(NULL, NULL, taskD, taskC);
SD_task_dependency_add(NULL, NULL, taskB, taskC);
try {
SD_task_dependency_add(NULL, NULL, taskA, taskA); /* shouldn't work and must raise an exception */
xbt_die("Hey, I can add a dependency between Task A and Task A!");
} catch (xbt_ex& ex) {
if (ex.category != arg_error)
throw; /* this is a serious error */
}
try {
SD_task_dependency_add(NULL, NULL, taskB, taskA); /* shouldn't work and must raise an exception */
xbt_die("Oh oh, I can add an already existing dependency!");
} catch (xbt_ex& ex) {
if (ex.category != arg_error)
throw;
}
try {
SD_task_dependency_remove(taskA, taskC); /* shouldn't work and must raise an exception */
xbt_die("Dude, I can remove an unknown dependency!");
} catch (xbt_ex& ex) {
if (ex.category != arg_error)
throw;
}
try {
SD_task_dependency_remove(taskC, taskC); /* shouldn't work and must raise an exception */
xbt_die("Wow, I can remove a dependency between Task C and itself!");
} catch (xbt_ex& ex) {
if (ex.category != arg_error)
throw;
}
/* if everything is ok, no exception is forwarded or rethrown by main() */
/* watch points */
SD_task_watch(taskD, SD_DONE);
SD_task_watch(taskB, SD_DONE);
SD_task_unwatch(taskD, SD_DONE);
/* scheduling parameters */
host_list[0] = h1;
host_list[1] = h2;
computation_amount[0] = comp_amount1;
computation_amount[1] = comp_amount2;
communication_amount[1] = comm_amount12;
communication_amount[2] = comm_amount21;
/* estimated time */
SD_task_t task = taskD;
XBT_INFO("Estimated time for '%s': %f", SD_task_get_name(task), SD_task_get_execution_time(task, 2, host_list,
computation_amount, communication_amount));
SD_task_schedule(taskA, 2, host_list, computation_amount, communication_amount, -1);
SD_task_schedule(taskB, 2, host_list, computation_amount, communication_amount, -1);
SD_task_schedule(taskC, 2, host_list, computation_amount, communication_amount, -1);
SD_task_schedule(taskD, 2, host_list, computation_amount, communication_amount, -1);
std::set<SD_task_t> *changed_tasks = simgrid::sd::simulate(-1.0);
for (auto task: *changed_tasks){
XBT_INFO("Task '%s' start time: %f, finish time: %f", SD_task_get_name(task),
SD_task_get_start_time(task), SD_task_get_finish_time(task));
}
XBT_DEBUG("Destroying tasks...");
SD_task_destroy(taskA);
SD_task_destroy(taskB);
SD_task_destroy(taskC);
SD_task_destroy(taskD);
XBT_DEBUG("Tasks destroyed. Exiting SimDag...");
SD_exit();
return 0;
}
int main(int argc, char **argv)
{
int i;
unsigned int ctr;
const char *platform_file;
const SD_workstation_t *workstations;
const char *name1;
const char *name2;
double computation_amount1;
double computation_amount2;
double communication_amount12;
double communication_amount21;
const SD_link_t *route;
int route_size;
SD_task_t task, taskA, taskB, taskC, taskD, checkB, checkD;
xbt_dynar_t changed_tasks;
xbt_ex_t ex;
const int workstation_number = 2;
SD_workstation_t workstation_list[2];
double computation_amount[2];
double communication_amount[4] = { 0 };
double rate = -1.0;
SD_workstation_t w1, w2;
/* initialization of SD */
SD_init(&argc, argv);
/* xbt_log_control_set("sd.thres=debug"); */
if (argc < 2) {
XBT_INFO("Usage: %s platform_file", argv[0]);
XBT_INFO("example: %s sd_platform.xml", argv[0]);
exit(1);
}
/* creation of the environment */
platform_file = argv[1];
SD_create_environment(platform_file);
/* test the estimation functions */
workstations = SD_workstation_get_list();
w1 = workstations[0];
w2 = workstations[1];
SD_workstation_set_access_mode(w2, SD_WORKSTATION_SEQUENTIAL_ACCESS);
name1 = SD_workstation_get_name(w1);
name2 = SD_workstation_get_name(w2);
computation_amount1 = 2000000;
computation_amount2 = 1000000;
communication_amount12 = 2000000;
communication_amount21 = 3000000;
XBT_INFO("Computation time for %f flops on %s: %f", computation_amount1,
name1, SD_workstation_get_computation_time(w1,
computation_amount1));
XBT_INFO("Computation time for %f flops on %s: %f", computation_amount2,
name2, SD_workstation_get_computation_time(w2,
computation_amount2));
XBT_INFO("Route between %s and %s:", name1, name2);
route = SD_route_get_list(w1, w2);
route_size = SD_route_get_size(w1, w2);
for (i = 0; i < route_size; i++) {
XBT_INFO(" Link %s: latency = %f, bandwidth = %f",
SD_link_get_name(route[i]),
SD_link_get_current_latency(route[i]),
SD_link_get_current_bandwidth(route[i]));
}
XBT_INFO("Route latency = %f, route bandwidth = %f",
SD_route_get_current_latency(w1, w2),
SD_route_get_current_bandwidth(w1, w2));
XBT_INFO("Communication time for %f bytes between %s and %s: %f",
communication_amount12, name1, name2,
SD_route_get_communication_time(w1, w2, communication_amount12));
XBT_INFO("Communication time for %f bytes between %s and %s: %f",
communication_amount21, name2, name1,
SD_route_get_communication_time(w2, w1, communication_amount21));
/* creation of the tasks and their dependencies */
taskA = SD_task_create("Task A", NULL, 10.0);
taskB = SD_task_create("Task B", NULL, 40.0);
taskC = SD_task_create("Task C", NULL, 30.0);
taskD = SD_task_create("Task D", NULL, 60.0);
/* try to attach and retrieve user data to a task */
SD_task_set_data(taskA, (void*) &computation_amount1);
if (computation_amount1 != (*((double*) SD_task_get_data(taskA))))
XBT_ERROR("User data was corrupted by a simple set/get");
SD_task_dependency_add(NULL, NULL, taskB, taskA);
SD_task_dependency_add(NULL, NULL, taskC, taskA);
SD_task_dependency_add(NULL, NULL, taskD, taskB);
SD_task_dependency_add(NULL, NULL, taskD, taskC);
/* SD_task_dependency_add(NULL, NULL, taskA, taskD); /\* deadlock */
TRY {
SD_task_dependency_add(NULL, NULL, taskA, taskA); /* shouldn't work and must raise an exception */
xbt_die("Hey, I can add a dependency between Task A and Task A!");
}
CATCH(ex) {
if (ex.category != arg_error)
RETHROW; /* this is a serious error */
xbt_ex_free(ex);
}
TRY {
SD_task_dependency_add(NULL, NULL, taskB, taskA); /* shouldn't work and must raise an exception */
xbt_die("Oh oh, I can add an already existing dependency!");
}
CATCH(ex) {
if (ex.category != arg_error)
RETHROW;
xbt_ex_free(ex);
}
TRY {
SD_task_dependency_remove(taskA, taskC); /* shouldn't work and must raise an exception */
xbt_die("Dude, I can remove an unknown dependency!");
}
CATCH(ex) {
if (ex.category != arg_error)
RETHROW;
xbt_ex_free(ex);
}
TRY {
SD_task_dependency_remove(taskC, taskC); /* shouldn't work and must raise an exception */
xbt_die("Wow, I can remove a dependency between Task C and itself!");
}
CATCH(ex) {
if (ex.category != arg_error)
RETHROW;
xbt_ex_free(ex);
}
/* if everything is ok, no exception is forwarded or rethrown by main() */
/* watch points */
SD_task_watch(taskD, SD_DONE);
SD_task_watch(taskB, SD_DONE);
SD_task_unwatch(taskD, SD_DONE);
/* scheduling parameters */
workstation_list[0] = w1;
workstation_list[1] = w2;
computation_amount[0] = computation_amount1;
computation_amount[1] = computation_amount2;
communication_amount[1] = communication_amount12;
communication_amount[2] = communication_amount21;
/* estimated time */
task = taskD;
XBT_INFO("Estimated time for '%s': %f", SD_task_get_name(task),
SD_task_get_execution_time(task, workstation_number,
workstation_list, computation_amount,
communication_amount));
/* let's launch the simulation! */
SD_task_schedule(taskA, workstation_number, workstation_list,
computation_amount, communication_amount, rate);
SD_task_schedule(taskB, workstation_number, workstation_list,
computation_amount, communication_amount, rate);
SD_task_schedule(taskC, workstation_number, workstation_list,
computation_amount, communication_amount, rate);
SD_task_schedule(taskD, workstation_number, workstation_list,
computation_amount, communication_amount, rate);
changed_tasks = SD_simulate(-1.0);
xbt_dynar_foreach(changed_tasks, ctr, task) {
XBT_INFO("Task '%s' start time: %f, finish time: %f",
SD_task_get_name(task),
SD_task_get_start_time(task), SD_task_get_finish_time(task));
}