#include "xbt/ex.h"
#include "xbt/dict.h"
#include "portable.h"
+#include "surf_private.h"
#include "surf/surf_resource.h"
#include "simgrid/sg_config.h"
-
#include "workstation_private.h"
+#include "surf/cpu_cas01_private.h"
+#include "surf/maxmin_private.h"
+
+
+/* FIXME: Where should the VM state be defined?
+ * At now, this must be synchronized with e_msg_vm_state_t */
+typedef enum {
+ /* created, but not yet started */
+ vm_state_created,
+
+ vm_state_running,
+ vm_state_migrating,
+
+ /* Suspend/resume does not involve disk I/O, so we assume there is no transition states. */
+ vm_state_suspended,
+ /* Save/restore involves disk I/O, so there should be transition states. */
+ vm_state_saving,
+ vm_state_saved,
+ vm_state_restoring,
+
+} e_surf_vm_state_t;
+
+/* NOTE:
+ * The workstation_VM2013 struct includes the workstation_CLM03 struct in
+ * its first member. The workstation_VM2013_t struct inherites all
+ * characteristics of the workstation_CLM03 struct. So, we can treat a
+ * workstation_VM2013 object as a workstation_CLM03 if necessary.
+ **/
typedef struct workstation_VM2013 {
s_workstation_CLM03_t ws; /* a VM is a ''v''host */
+ /* The workstation object of the lower layer */
workstation_CLM03_t sub_ws; // Pointer to the ''host'' OS
- e_msg_vm_state_t current_state; // See include/msg/datatypes.h
+
+ e_surf_vm_state_t current_state;
+
+
+ surf_action_t cpu_action;
+
} s_workstation_VM2013_t, *workstation_VM2013_t;
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_vm_workstation, surf,
{
workstation_VM2013_t vm_ws = xbt_new0(s_workstation_VM2013_t, 1);
+ vm_ws->sub_ws = surf_workstation_resource_priv(ind_phys_workstation);
+ vm_ws->current_state = vm_state_created;
+
+
// //// WORKSTATION RELATED STUFF ////
- __init_ws(&(vm_ws->ws), name);
+ /* Create a workstation_CLM03 resource and register it to the system
+ Please note that the new ws is added into the host_lib. Then,
+ if you want to get a workstation_VM2013 object from host_lib, see
+ ws->generic_resouce.model->type first. If it is SURF_MODEL_TYPE_VM_WORKSTATION,
+ you can cast ws to vm_ws. */
+
+ __init_workstation_CLM03(&vm_ws->ws, name);
+
// Override the model with the current VM one.
vm_ws->ws.generic_resource.model = surf_vm_workstation_model;
- // //// CPU RELATED STUFF ////
- // This can be done directly during the creation of the surf_vm_worsktation model if
- // we consider that there will be only one CPU model for one layer of virtualization.
- // However, if you want to provide several layers (i.e. a VM inside a VM hosted by a PM)
- // we should add a kind of table that stores the different CPU model.
- // vm_ws->ws->generic_resource.model.extension.cpu=cpu_model_cas01(VM level ? );
- // //// NET RELATED STUFF ////
+ // //// CPU RELATED STUFF ////
+ // Roughly, create a vcpu resource by using the values of the sub_cpu one.
+ cpu_Cas01_t sub_cpu = surf_cpu_resource_priv(ind_phys_workstation);
+
+ /* We can assume one core and cas01 cpu for the first step.
+ * Do xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu) if you get the resource.
+ * */
+ cpu_cas01_create_resource(name, // name
+ sub_cpu->power_peak, // host->power_peak,
+ 1, // host->power_scale,
+ NULL, // host->power_trace,
+ 1, // host->core_amount,
+ SURF_RESOURCE_ON, // host->initial_state,
+ NULL, // host->state_trace,
+ NULL, // host->properties,
+ surf_cpu_model_vm);
+
+ vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_phys_workstation, 0); // cost 0 is okay?
+
+ //// NET RELATED STUFF ////
// Bind virtual net_elm to the host
// TODO rebind each time you migrate a VM
// TODO check how network requests are scheduled between distinct processes competing for the same card.
- vm_ws->ws.net_elm=xbt_lib_get_or_null(host_lib,vm_ws->physical_ws->generic_resource.name,ROUTING_HOST_LEVEL);
+ // Please note that the __init_workstation_CLM03 invocation assigned NULL to ws.net_elm since no network elements
+ // were previously created for this hostname. Indeed all network elements are created during the SimGrid initialization phase by considering
+ // the platform file.
+ vm_ws->ws.net_elm = xbt_lib_get_or_null(host_lib, vm_ws->sub_ws->generic_resource.name, ROUTING_HOST_LEVEL);
xbt_lib_set(host_lib, name, ROUTING_HOST_LEVEL, vm_ws->ws.net_elm);
// //// STORAGE RELATED STUFF ////
+ // ind means ''indirect'' that this is a reference on the whole dict_elm structure (i.e not on the surf_resource_private infos)
- // ind means ''indirect'' that this is a reference on the whole dict_elm structure (i.e not on the surf_resource_private infos)
- vm_ws->physical_ws = surf_workstation_resource_priv(ind_phys_workstation);
- vm_ws->current_state=msg_vm_state_created,
- xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, vm_ws);
}
/* do something */
- vm_ws->physical_workstation = surf_workstation_resource_priv(ind_dest_phys_workstation);
+ vm_ws->sub_ws = surf_workstation_resource_priv(ind_dest_phys_workstation);
}
/*
/* ind_phys_workstation equals to smx_host_t */
workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_workstation);
xbt_assert(vm_ws);
- xbt_assert(vm_ws->generic_resource.model == surf_vm_workstation_model);
+ xbt_assert(vm_ws->ws.generic_resource.model == surf_vm_workstation_model);
- const char *name = vm_ws->generic_resource.name;
+ {
+ int ret = surf_cpu_model_pm->action_unref(vm_ws->cpu_action);
+ xbt_assert(ret == 1, "Bug: some resource still remains");
+ }
+
+ const char *name = vm_ws->ws.generic_resource.name;
/* this will call surf_resource_free() */
xbt_lib_unset(host_lib, name, SURF_WKS_LEVEL);
- xbt_free(vm_ws->generic_resource.name);
+ xbt_free(vm_ws->ws.generic_resource.name);
xbt_free(vm_ws);
}
}
+// TODO Please fix it (if found is wrong, nothing is returned)
+static double get_solved_value(surf_action_t cpu_action)
+{
+ int found = 0;
+ lmm_system_t pm_system = surf_workstation_model->model_private->maxmin_system;
+ lmm_variable_t var = NULL;
+
+ xbt_swag_foreach(var, &pm_system->variable_set) {
+ XBT_DEBUG("var id %p id_int %d double %f", var->id, var->id_int, var->value);
+ if (var->id == cpu_action) {
+ found = 1;
+ break;
+ }
+ }
+
+ if (found)
+ return var->value;
+
+ XBT_CRITICAL("bug: cannot found the solved variable of the action %p", cpu_action);
+}
+
+
static double vm_ws_share_resources(surf_model_t workstation_model, double now)
{
- // Can be obsolete if you right can ensure that ws_model has been code previously
- // invoke ws_share_resources on the physical_lyer: sub_ws->ws_share_resources()
+ /* 0. Make sure that we already calculated the resource share at the physical
+ * machine layer. */
{
unsigned int index_of_pm_ws_model = xbt_dynar_search(model_list_invoke, surf_workstation_model);
unsigned int index_of_vm_ws_model = xbt_dynar_search(model_list_invoke, surf_vm_workstation_model);
xbt_assert((index_of_pm_ws_model < index_of_vm_ws_model), "Cannot assume surf_workstation_model comes before");
- /* we have to make sure that the share_resource() callback of the model of the lower layer must be called in advance. */
+
+ /* Another option is that we call sub_ws->share_resource() here. The
+ * share_resource() function has no side-effect. We can call it here to
+ * ensure that. */
+ }
+
+
+ /* 1. Now we know how many resource should be assigned to each virtual
+ * machine. We update constraints of the virtual machine layer.
+ *
+ *
+ * If we have two virtual machine (VM1 and VM2) on a physical machine (PM1).
+ * X1 + X2 = C (Equation 1)
+ * where
+ * the resource share of VM1: X1
+ * the resource share of VM2: X2
+ * the capacity of PM1: C
+ *
+ * Then, if we have two process (P1 and P2) on VM1.
+ * X1_1 + X1_2 = X1 (Equation 2)
+ * where
+ * the resource share of P1: X1_1
+ * the resource share of P2: X1_2
+ * the capacity of VM1: X1
+ *
+ * Equation 1 was solved in the physical machine layer.
+ * Equation 2 is solved in the virtual machine layer (here).
+ * X1 must be passed to the virtual machine laye as a constraint value.
+ *
+ **/
+
+ /* iterate for all hosts including virtual machines */
+ xbt_lib_cursor_t cursor;
+ char *key;
+ void **ind_host;
+ xbt_lib_foreach(host_lib, cursor, key, ind_host) {
+ workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
+ cpu_Cas01_t cpu_cas01 = ind_host[SURF_CPU_LEVEL];
+
+ /* skip if it is not a virtual machine */
+ if (!ws_clm03)
+ continue;
+ if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
+ continue;
+ xbt_assert(cpu_cas01, "cpu-less workstation");
+
+ /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
+ workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
+
+ double solved_value = get_solved_value(ws_vm2013->cpu_action);
+ XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value,
+ ws_clm03->generic_resource.name, ws_vm2013->sub_ws->generic_resource.name);
+
+ cpu_cas01->constraint->bound = solved_value;
}
- // assign the corresponding value to X1, X2, ....
- // invoke cpu and net share resources on layer (1)
- // return min;
- return -1.0;
+ /* 2. Calculate resource share at the virtual machine layer. */
+ return ws_share_resources(workstation_model, now);
}
static const char *vm_ws_get_phys_host(void *ind_vm_ws)
{
workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
- return vm_ws->physical_workstation->name;
+ return vm_ws->sub_ws->generic_resource.name;
}
static void surf_vm_workstation_model_init_internal(void)
{
- surf_vm_workstation_model = surf_model_init();
+ surf_model_t model = surf_model_init();
+
+ model->name = "Virtual Workstation";
+ model->type = SURF_MODEL_TYPE_VM_WORKSTATION;
+
+ model->extension.workstation.cpu_model = surf_cpu_model_vm;
- surf_vm_workstation_model->name = "Virtual Workstation";
- surf_vm_workstation_model->type = SURF_MODEL_TYPE_VM_WORKSTATION;
+ model->extension.vm_workstation.create = vm_ws_create;
+ model->extension.vm_workstation.set_state = vm_ws_set_state;
+ model->extension.vm_workstation.get_state = vm_ws_get_state;
+ model->extension.vm_workstation.migrate = vm_ws_migrate;
+ model->extension.vm_workstation.get_phys_host = vm_ws_get_phys_host;
+ model->extension.vm_workstation.destroy = vm_ws_destroy;
- surf_vm_workstation_model->extension.vm_workstation.create = vm_ws_create;
- surf_vm_workstation_model->extension.vm_workstation.set_state = vm_ws_set_state;
- surf_vm_workstation_model->extension.vm_workstation.get_state = vm_ws_get_state;
- surf_vm_workstation_model->extension.vm_workstation.migrate = vm_ws_migrate;
- surf_vm_workstation_model->extension.vm_workstation.get_phys_host = vm_ws_get_phys_host;
- surf_vm_workstation_model->extension.vm_workstation.destroy = vm_ws_destroy;
+ model->model_private->share_resources = vm_ws_share_resources;
+ model->model_private->resource_used = ws_resource_used;
+ model->model_private->update_actions_state = ws_update_actions_state;
+ model->model_private->update_resource_state = ws_update_resource_state;
+ model->model_private->finalize = ws_finalize;
- surf_vm_workstation_model->model_private->share_resources = ws_share_resources;
+ surf_vm_workstation_model = model;
}
void surf_vm_workstation_model_init()
