double sg_tcp_gamma = 0.0;
+/******************************************************************************/
+/* Factors callbacks */
+/******************************************************************************/
+static double constant_latency_factor(double size)
+{
+ return sg_latency_factor;
+}
+
+static double constant_bandwidth_factor(double size)
+{
+ return sg_bandwidth_factor;
+}
+
+static double constant_bandwidth_constraint(double rate, double bound, double size)
+{
+ return rate;
+}
+
+/**********************/
+/* SMPI callbacks */
+/**********************/
+static double smpi_latency_factor(double size)
+{
+ /* 1 B <= size <= 1 KiB */
+ if (size <= 1024.0) {
+ return 1.0056;
+ }
+
+ /* 2 KiB <= size <= 32 KiB */
+ if (size <= 32768.0) {
+ return 1.8805;
+ }
+
+ /* 64 KiB <= size <= 4 MiB */
+ return 22.7111;
+}
+
+static double smpi_bandwidth_factor(double size)
+{
+ /* 1 B <= size <= 1 KiB */
+ if (size <= 1024.0) {
+ return 0.2758;
+ }
+
+ /* 2 KiB <= size <= 32 KiB */
+ if (size <= 32768.0) {
+ return 0.5477;
+ }
+
+ /* 64 KiB <= size <= 4 MiB */
+ return 0.9359;
+}
+
+static double smpi_bandwidth_constraint(double rate, double bound, double size)
+{
+ return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
+}
+
+
+static double (*latency_factor_callback)(double) = &constant_latency_factor;
+static double (*bandwidth_factor_callback)(double) = &constant_bandwidth_factor;
+static double (*bandwidth_constraint_callback)(double, double, double) = &constant_bandwidth_constraint;
+
+
static link_CM02_t net_link_new(char *name,
double bw_initial,
tmgr_trace_t bw_trace,
static surf_action_t net_communicate(const char *src_name, const char *dst_name,
int src, int dst, double size, double rate)
{
+ unsigned int i;
+ link_CM02_t link;
+ int failed = 0;
surf_action_network_CM02_t action = NULL;
+ double bandwidth_bound;
/* LARGE PLATFORMS HACK:
Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
Use the cluster_id for ->id */
xbt_dynar_t route = used_routing->get_route(src, dst);
/* LARGE PLATFORMS HACK:
total_route_size = route_size + src->link_nb + dst->nb */
- unsigned int i;
XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
/* LARGE PLATFORMS HACK:
"You're trying to send data from %s to %s but there is no connection between these two hosts.",
src_name, dst_name);
- link_CM02_t link;
- int failed = 0;
xbt_dynar_foreach(route, i, link) {
if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
failed = 1;
action->latency = 0.0;
action->weight = 0.0;
+ bandwidth_bound = -1.0;
xbt_dynar_foreach(route, i, link) {
action->latency += link->lat_current;
action->weight +=
link->lat_current +
sg_weight_S_parameter /
(link->lmm_resource.power.peak * link->lmm_resource.power.scale);
+ if(bandwidth_bound < 0.0)
+ bandwidth_bound = (*bandwidth_factor_callback)(size) * (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
+ else
+ bandwidth_bound = min(bandwidth_bound, (*bandwidth_factor_callback)(size) * (link->lmm_resource.power.peak * link->lmm_resource.power.scale));
}
/* LARGE PLATFORMS HACK:
Add src->link and dst->link latencies */
action->lat_current = action->latency;
- action->latency *= sg_latency_factor;
+ action->latency *= (*latency_factor_callback)(size);
+ action->rate = (*bandwidth_constraint_callback)(action->rate, bandwidth_bound, size);
/* LARGE PLATFORMS HACK:
lmm_variable_new(..., total_route_size) */
action->max_duration = duration;
}
+
+/**
+ * FIXME : this should be done in the binding code !!
+ */
+void network_create_resource(char *name,
+ double initial_bandwidth,double initial_latency)
+{
+
+ char *name_link;
+ double bw_initial;
+ tmgr_trace_t bw_trace;
+ double lat_initial;
+ tmgr_trace_t lat_trace;
+ e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
+ e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
+ tmgr_trace_t state_trace;
+
+
+ name_link = (char*)name;
+ bw_initial = initial_bandwidth;
+ bw_trace = tmgr_trace_new("");
+ lat_initial = initial_latency;
+ lat_trace = tmgr_trace_new("");
+ // FIXME Hard Coded Values
+ state_initial_link = SURF_RESOURCE_ON;
+ policy_initial_link = SURF_LINK_SHARED;
+ state_trace = tmgr_trace_new("");
+
+ net_link_new(name_link, bw_initial, bw_trace,
+ lat_initial, lat_trace, state_initial_link, state_trace,
+ policy_initial_link, xbt_dict_new());
+}
+
static void net_finalize(void)
{
surf_model_exit(surf_network_model);
net_get_link_bandwidth;
surf_network_model->extension.network.get_link_latency = net_get_link_latency;
surf_network_model->extension.network.link_shared = net_link_shared;
+ surf_network_model->extension.network.create_resource = network_create_resource;
+ surf_network_model->extension.network.add_traces = net_add_traces;
if (!network_maxmin_system)
network_maxmin_system = lmm_system_new();
NULL));
}
+
+
+/************************************************************************/
+/* New model based on LV08 and experimental results of MPI ping-pongs */
+/************************************************************************/
+void surf_network_model_init_SMPI(const char *filename)
+{
+
+ if (surf_network_model)
+ return;
+ surf_network_model_init_internal();
+ latency_factor_callback = &smpi_latency_factor;
+ bandwidth_factor_callback = &smpi_bandwidth_factor;
+ bandwidth_constraint_callback = &smpi_bandwidth_constraint;
+ net_define_callbacks(filename);
+ xbt_dynar_push(model_list, &surf_network_model);
+ network_solve = lmm_solve;
+
+ xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
+
+ update_model_description(surf_network_model_description,
+ "SMPI", surf_network_model);
+}
+
/************************************************************************/
/* New model based on optimizations discussed during this thesis */
/************************************************************************/
update_model_description(surf_network_model_description,
"Vegas", surf_network_model);
}
+
+
