X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/66b0686fe441796325c3b5738b1b880d15ce1ea6..e2ca0637b19f1f957609d27280def599965f085b:/src/smpi/smpi_base.c

diff --git a/src/smpi/smpi_base.c b/src/smpi/smpi_base.c
index 9ba0db2f17..b967f687bd 100644
--- a/src/smpi/smpi_base.c
+++ b/src/smpi/smpi_base.c
@@ -7,22 +7,17 @@
 #include "private.h"
 #include "xbt/time.h"
 #include "mc/mc.h"
+#include "xbt/replay.h"
+#include <errno.h>
+#include "surf/surf.h"
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_base, smpi,
                                 "Logging specific to SMPI (base)");
-XBT_LOG_EXTERNAL_CATEGORY(smpi_base);
-XBT_LOG_EXTERNAL_CATEGORY(smpi_bench);
-XBT_LOG_EXTERNAL_CATEGORY(smpi_kernel);
-XBT_LOG_EXTERNAL_CATEGORY(smpi_mpi);
-XBT_LOG_EXTERNAL_CATEGORY(smpi_mpi_dt);
-XBT_LOG_EXTERNAL_CATEGORY(smpi_coll);
-XBT_LOG_EXTERNAL_CATEGORY(smpi_receiver);
-XBT_LOG_EXTERNAL_CATEGORY(smpi_sender);
-XBT_LOG_EXTERNAL_CATEGORY(smpi_util);
-
-static int match_recv(void* a, void* b) {
+
+static int match_recv(void* a, void* b, smx_action_t ignored) {
    MPI_Request ref = (MPI_Request)a;
    MPI_Request req = (MPI_Request)b;
+   XBT_DEBUG("Trying to match a recv of src %d against %d, tag %d against %d",ref->src,req->src, ref->tag, req->tag);
 
    xbt_assert(ref, "Cannot match recv against null reference");
    xbt_assert(req, "Cannot match recv against null request");
@@ -30,10 +25,10 @@ static int match_recv(void* a, void* b) {
           && (ref->tag == MPI_ANY_TAG || req->tag == ref->tag);
 }
 
-static int match_send(void* a, void* b) {
+static int match_send(void* a, void* b,smx_action_t ignored) {
    MPI_Request ref = (MPI_Request)a;
    MPI_Request req = (MPI_Request)b;
-
+   XBT_DEBUG("Trying to match a send of src %d against %d, tag %d against %d",ref->src,req->src, ref->tag, req->tag);
    xbt_assert(ref, "Cannot match send against null reference");
    xbt_assert(req, "Cannot match send against null request");
    return (req->src == MPI_ANY_SOURCE || req->src == ref->src)
@@ -63,6 +58,41 @@ static MPI_Request build_request(void *buf, int count,
   return request;
 }
 
+void smpi_action_trace_run(char *path)
+{
+  char *name;
+  xbt_dynar_t todo;
+  xbt_dict_cursor_t cursor;
+
+  action_fp=NULL;
+  if (path) {
+    action_fp = fopen(path, "r");
+    xbt_assert(action_fp != NULL, "Cannot open %s: %s", path,
+                strerror(errno));
+  }
+
+  if (!xbt_dict_is_empty(action_queues)) {
+    XBT_WARN
+        ("Not all actions got consumed. If the simulation ended successfully (without deadlock), you may want to add new processes to your deployment file.");
+
+
+    xbt_dict_foreach(action_queues, cursor, name, todo) {
+      XBT_WARN("Still %lu actions for %s", xbt_dynar_length(todo), name);
+    }
+  }
+
+  if (path)
+    fclose(action_fp);
+  xbt_dict_free(&action_queues);
+  action_queues = xbt_dict_new_homogeneous(NULL);
+}
+
+static void smpi_mpi_request_free_voidp(void* request)
+{
+  MPI_Request req = request;
+  smpi_mpi_request_free(&req);
+}
+
 /* MPI Low level calls */
 MPI_Request smpi_mpi_send_init(void *buf, int count, MPI_Datatype datatype,
                                int dst, int tag, MPI_Comm comm)
@@ -87,30 +117,61 @@ MPI_Request smpi_mpi_recv_init(void *buf, int count, MPI_Datatype datatype,
 void smpi_mpi_start(MPI_Request request)
 {
   smx_rdv_t mailbox;
+  int detached = 0;
 
   xbt_assert(!request->action,
               "Cannot (re)start a non-finished communication");
   if(request->flags & RECV) {
     print_request("New recv", request);
+    if (request->size < xbt_cfg_get_int(_surf_cfg_set, "smpi/async_small_thres"))
+    mailbox = smpi_process_mailbox_small();
+    else
     mailbox = smpi_process_mailbox();
-    // FIXME: SIMIX does not yet support don-contiguous datatypes
-    request->action = SIMIX_req_comm_irecv(mailbox, request->buf, &request->size, &match_recv, request);
+
+    // FIXME: SIMIX does not yet support non-contiguous datatypes
+    request->action = simcall_comm_irecv(mailbox, request->buf, &request->size, &match_recv, request);
   } else {
     print_request("New send", request);
-    mailbox = smpi_process_remote_mailbox(
-        smpi_group_index(smpi_comm_group(request->comm), request->dst));
-    // FIXME: SIMIX does not yet support don-contiguous datatypes
-    request->action = SIMIX_req_comm_isend(mailbox, request->size, -1.0,
-                                           request->buf, request->size, &match_send, request, 0);
-#ifdef HAVE_TRACING
-    SIMIX_req_set_category (request->action, TRACE_internal_smpi_get_category());
-#endif
-  }
+
+    if (request->size < xbt_cfg_get_int(_surf_cfg_set, "smpi/async_small_thres")) { // eager mode => detached send (FIXME: this limit should be configurable)
+      mailbox = smpi_process_remote_mailbox_small(
+            smpi_group_index(smpi_comm_group(request->comm), request->dst));
+    }else{
+      XBT_DEBUG("Send request %p is not in the permanent receive mailbox (buf: %p)",request,request->buf);
+      mailbox = smpi_process_remote_mailbox(
+                  smpi_group_index(smpi_comm_group(request->comm), request->dst));
+    }
+    if (request->size < 64*1024 ) { //(FIXME: this limit should be configurable)
+      void *oldbuf = request->buf;
+      detached = 1;
+      request->buf = malloc(request->size);
+      if (oldbuf)
+        memcpy(request->buf,oldbuf,request->size);
+      XBT_DEBUG("Send request %p is detached; buf %p copied into %p",request,oldbuf,request->buf);
+    }
+
+      request->action =
+      simcall_comm_isend(mailbox, request->size, -1.0,
+              request->buf, request->size,
+              &match_send,
+              &smpi_mpi_request_free_voidp, // how to free the userdata if a detached send fails
+              request,
+              // detach if msg size < eager/rdv switch limit
+              detached);
+
+  #ifdef HAVE_TRACING
+      /* FIXME: detached sends are not traceable (request->action == NULL) */
+      if (request->action)
+        simcall_set_category(request->action, TRACE_internal_smpi_get_category());
+  #endif
+
+    }
+
 }
 
 void smpi_mpi_startall(int count, MPI_Request * requests)
 {
-  int i;
+    int i;
 
   for(i = 0; i < count; i++) {
     smpi_mpi_start(requests[i]);
@@ -172,13 +233,14 @@ void smpi_mpi_recv(void *buf, int count, MPI_Datatype datatype, int src,
   smpi_mpi_wait(&request, status);
 }
 
+
+
 void smpi_mpi_send(void *buf, int count, MPI_Datatype datatype, int dst,
                    int tag, MPI_Comm comm)
 {
-  MPI_Request request;
-
-  request = smpi_mpi_isend(buf, count, datatype, dst, tag, comm);
-  smpi_mpi_wait(&request, MPI_STATUS_IGNORE);
+	  MPI_Request request;
+	  request = smpi_mpi_isend(buf, count, datatype, dst, tag, comm);
+	  smpi_mpi_wait(&request, MPI_STATUS_IGNORE);
 }
 
 void smpi_mpi_sendrecv(void *sendbuf, int sendcount, MPI_Datatype sendtype,
@@ -209,6 +271,10 @@ int smpi_mpi_get_count(MPI_Status * status, MPI_Datatype datatype)
 static void finish_wait(MPI_Request * request, MPI_Status * status)
 {
   MPI_Request req = *request;
+  // if we have a sender, we should use its data, and not the data from the receive
+  if((req->action)&&
+      (req->src==MPI_ANY_SOURCE || req->tag== MPI_ANY_TAG))
+    req = (MPI_Request)SIMIX_comm_get_src_data((*request)->action);
 
   if(status != MPI_STATUS_IGNORE) {
     status->MPI_SOURCE = req->src;
@@ -218,6 +284,8 @@ static void finish_wait(MPI_Request * request, MPI_Status * status)
     // right?
     status->count = req->size;
   }
+  req = *request;
+
   print_request("Finishing", req);
   if(req->flags & NON_PERSISTENT) {
     smpi_mpi_request_free(request);
@@ -226,14 +294,16 @@ static void finish_wait(MPI_Request * request, MPI_Status * status)
   }
 }
 
-int smpi_mpi_test(MPI_Request * request, MPI_Status * status)
-{
-   int flag = SIMIX_req_comm_test((*request)->action);
-
-   if(flag) {
-      smpi_mpi_wait(request, status);
-   }
-   return flag;
+int smpi_mpi_test(MPI_Request * request, MPI_Status * status) {
+  int flag;
+  if ((*request)->action == NULL)
+    flag = 1;
+  else
+    flag = simcall_comm_test((*request)->action);
+  if(flag) {
+    finish_wait(request, status);
+  }
+  return flag;
 }
 
 int smpi_mpi_testany(int count, MPI_Request requests[], int *index,
@@ -257,7 +327,7 @@ int smpi_mpi_testany(int count, MPI_Request requests[], int *index,
       }
     }
     if(size > 0) {
-      i = SIMIX_req_comm_testany(comms);
+      i = simcall_comm_testany(comms);
       // FIXME: MPI_UNDEFINED or does SIMIX have a return code?
       if(i != MPI_UNDEFINED) {
         *index = map[i];
@@ -271,11 +341,76 @@ int smpi_mpi_testany(int count, MPI_Request requests[], int *index,
   return flag;
 }
 
+
+int smpi_mpi_testall(int count, MPI_Request requests[],
+                     MPI_Status status[])
+{
+  int flag=1;
+  int i;
+  for(i=0; i<count; i++)
+    if(requests[i]!= MPI_REQUEST_NULL)
+      if (smpi_mpi_test(&requests[i], &status[i])!=1)
+       flag=0;
+
+  return flag;
+}
+
+void smpi_mpi_probe(int source, int tag, MPI_Comm comm, MPI_Status* status){
+  int flag=0;
+  //FIXME find another wait to avoid busy waiting ?
+  // the issue here is that we have to wait on a nonexistent comm
+  while(flag==0){
+        smpi_mpi_iprobe(source, tag, comm, &flag, status);
+        XBT_DEBUG("Busy Waiting on probing : %d", flag);
+        if(!flag) {
+            simcall_process_sleep(0.0001);
+        }
+  }
+}
+
+void smpi_mpi_iprobe(int source, int tag, MPI_Comm comm, int* flag, MPI_Status* status){
+  MPI_Request request =build_request(NULL, 0, MPI_CHAR, source, smpi_comm_rank(comm), tag,
+            comm, NON_PERSISTENT | RECV);
+  // behave like a receive, but don't do it
+  smx_rdv_t mailbox;
+
+  print_request("New iprobe", request);
+  // We have to test both mailboxes as we don't know if we will receive one one or another
+    if (xbt_cfg_get_int(_surf_cfg_set, "smpi/async_small_thres")>0){
+        mailbox = smpi_process_mailbox_small();
+        XBT_DEBUG("trying to probe the perm recv mailbox");
+        request->action = simcall_comm_iprobe(mailbox, request->src, request->tag, &match_recv, (void*)request);
+    }
+    if (request->action==NULL){
+	mailbox = smpi_process_mailbox();
+        XBT_DEBUG("trying to probe the other mailbox");
+        request->action = simcall_comm_iprobe(mailbox, request->src, request->tag, &match_recv, (void*)request);
+    }
+
+  if(request->action){
+    MPI_Request req = (MPI_Request)SIMIX_comm_get_src_data(request->action);
+    *flag=true;
+    if(status != MPI_STATUS_IGNORE) {
+      status->MPI_SOURCE = req->src;
+      status->MPI_TAG = req->tag;
+      status->MPI_ERROR = MPI_SUCCESS;
+      status->count = req->size;
+    }
+  }
+  else *flag=false;
+  smpi_mpi_request_free(&request);
+
+  return;
+}
+
 void smpi_mpi_wait(MPI_Request * request, MPI_Status * status)
 {
   print_request("Waiting", *request);
-  SIMIX_req_comm_wait((*request)->action, -1.0);
-  finish_wait(request, status);
+  if ((*request)->action != NULL) { // this is not a detached send
+    simcall_comm_wait((*request)->action, -1.0);
+    finish_wait(request, status);
+  }
+  // FIXME for a detached send, finish_wait is not called:
 }
 
 int smpi_mpi_waitany(int count, MPI_Request requests[],
@@ -293,19 +428,21 @@ int smpi_mpi_waitany(int count, MPI_Request requests[],
     size = 0;
     XBT_DEBUG("Wait for one of");
     for(i = 0; i < count; i++) {
-      if(requests[i] != MPI_REQUEST_NULL) {
-        print_request("   ", requests[i]);
+      if((requests[i] != MPI_REQUEST_NULL) && (requests[i]->action != NULL)) {
+        print_request("Waiting any ", requests[i]);
         xbt_dynar_push(comms, &requests[i]->action);
         map[size] = i;
         size++;
       }
     }
     if(size > 0) {
-      i = SIMIX_req_comm_waitany(comms);
+      i = simcall_comm_waitany(comms);
+
       // FIXME: MPI_UNDEFINED or does SIMIX have a return code?
       if (i != MPI_UNDEFINED) {
         index = map[i];
         finish_wait(&requests[index], status);
+
       }
     }
     xbt_free(map);
@@ -617,7 +754,8 @@ void smpi_mpi_reduce(void *sendbuf, void *recvbuf, int count,
     // FIXME: check for errors
     smpi_datatype_extent(datatype, &lb, &dataext);
     // Local copy from root
-    smpi_datatype_copy(sendbuf, count, datatype, recvbuf, count, datatype);
+    if (sendbuf && recvbuf)
+      smpi_datatype_copy(sendbuf, count, datatype, recvbuf, count, datatype);
     // Receive buffers from senders
     //TODO: make a MPI_barrier here ?
     requests = xbt_new(MPI_Request, size - 1);
@@ -638,10 +776,12 @@ void smpi_mpi_reduce(void *sendbuf, void *recvbuf, int count,
     smpi_mpi_startall(size - 1, requests);
     for(src = 0; src < size - 1; src++) {
       index = smpi_mpi_waitany(size - 1, requests, MPI_STATUS_IGNORE);
+      XBT_DEBUG("finished waiting any request with index %d", index);
       if(index == MPI_UNDEFINED) {
         break;
       }
-      smpi_op_apply(op, tmpbufs[index], recvbuf, &count, &datatype);
+      if(op) /* op can be MPI_OP_NULL that does nothing */
+        smpi_op_apply(op, tmpbufs[index], recvbuf, &count, &datatype);
     }
     for(index = 0; index < size - 1; index++) {
       xbt_free(tmpbufs[index]);