int test_perfmonsetup()
{
CpuInfo_t cpuinfo;
int group1, group2;
int cpu = 0;
topology_init();
cpuinfo = get_cpuInfo();
if (cpuinfo->isIntel == 0)
{
topology_finalize();
return 1;
}
int ret = perfmon_init(1, &cpu);
if (ret != 0)
goto fail;
if (perfmon_getNumberOfGroups() != 0)
goto fail;
if (perfmon_getNumberOfThreads() != 1)
goto fail;
ret = perfmon_addEventSet(eventset_ok);
if (ret != 0)
goto fail;
group1 = ret;
if (perfmon_getNumberOfGroups() != 1)
goto fail;
if (perfmon_getNumberOfEvents(group1) != 3)
goto fail;
ret = perfmon_setupCounters(group1);
if (ret != 0)
goto fail;
if (perfmon_getIdOfActiveGroup() != group1)
goto fail;
ret = perfmon_addEventSet(eventset_option);
if (ret != 1)
goto fail;
group2 = ret;
if (perfmon_getIdOfActiveGroup() != group1)
goto fail;
if (perfmon_getNumberOfGroups() != 2)
goto fail;
if (perfmon_getNumberOfEvents(group1) != 3)
goto fail;
if (perfmon_getNumberOfEvents(group2) != 3)
goto fail;
perfmon_finalize();
topology_finalize();
return 1;
fail:
perfmon_finalize();
topology_finalize();
return 0;
}
int test_perfmonstop_nostart()
{
CpuInfo_t cpuinfo;
int cpu = 0;
int group;
topology_init();
cpuinfo = get_cpuInfo();
if (cpuinfo->isIntel == 0)
{
topology_finalize();
return 1;
}
int ret = perfmon_init(1, &cpu);
if (ret != 0)
goto fail;
ret = perfmon_addEventSet(eventset_ok);
if (ret != 0)
goto fail;
group = ret;
ret = perfmon_setupCounters(group);
if (ret != 0)
goto fail;
ret = perfmon_stopCounters();
if (ret == 0)
goto fail;
perfmon_finalize();
topology_finalize();
return 1;
fail:
perfmon_finalize();
topology_finalize();
return 0;
}
int test_perfmonresult_nosetup()
{
CpuInfo_t cpuinfo;
int cpu = 0;
int group;
topology_init();
cpuinfo = get_cpuInfo();
if (cpuinfo->isIntel == 0)
{
topology_finalize();
return 1;
}
int ret = perfmon_init(1, &cpu);
if (ret != 0)
goto fail;
ret = perfmon_addEventSet(eventset_ok);
if (ret != 0)
goto fail;
group = ret;
double result = perfmon_getResult(group,0,0);
if (result != 0)
goto fail;
perfmon_finalize();
topology_finalize();
return 1;
fail:
perfmon_finalize();
topology_finalize();
return 0;
}
int main(int argc, char* argv[])
{
int i;
int* cpus;
int gid;
double result = 0.0;
// Load the topology module and print some values.
topology_init();
// CpuInfo_t contains global information like name, CPU family, ...
CpuInfo_t info = get_cpuInfo();
// CpuTopology_t contains information about the topology of the CPUs.
CpuTopology_t topo = get_cpuTopology();
printf("Likwid example on a %s with %d CPUs\n", info->name, topo->numHWThreads);
cpus = malloc(topo->numHWThreads * sizeof(int));
if (!cpus)
return 1;
for (i=0;i<topo->numHWThreads;i++)
{
cpus[i] = topo->threadPool[i].apicId;
}
// Must be called before perfmon_init() but only if you want to use another
// access mode as the pre-configured one. For direct access (0) you have to
// be root.
//accessClient_setaccessmode(0);
// Initialize the perfmon module.
perfmon_init(topo->numHWThreads, cpus);
// Add eventset string to the perfmon module.
gid = perfmon_addEventSet(EVENTSET);
// Setup the eventset identified by group ID (gid).
perfmon_setupCounters(gid);
// Start all counters in the previously set up event set.
perfmon_startCounters();
// Perform something
sleep(2);
// Stop all counters in the previously started event set.
perfmon_stopCounters();
// Print the result of every thread/CPU.
for (i = 0;i < topo->numHWThreads; i++)
{
result = perfmon_getResult(gid, 0, i);
printf("Measurement result for event set %s at CPU %d: %f\n", EVENTSET, cpus[i], result);
}
// Uninitialize the perfmon module.
perfmon_finalize();
// Uninitialize the topology module.
topology_finalize();
return 0;
}
int test_perfmonaddeventset_noinit()
{
int ret = perfmon_addEventSet(eventset_ok);
if (ret == 0)
goto fail;
return 1;
fail:
return 0;
}
static int lua_likwid_addEventSet(lua_State* L)
{
int groupId, n;
const char* tmpString;
if (perfmon_isInitialized == 0)
{
return 0;
}
n = lua_gettop(L);
tmpString = luaL_checkstring(L, n);
luaL_argcheck(L, strlen(tmpString) > 0, n, "Event string must be larger than 0");
groupId = perfmon_addEventSet((char*)tmpString);
lua_pushnumber(L, groupId+1);
return 1;
}
int test_perfmonresult()
{
CpuInfo_t cpuinfo;
int cpu = 0;
int group;
topology_init();
cpuinfo = get_cpuInfo();
if (cpuinfo->isIntel == 0)
{
topology_finalize();
return 1;
}
int ret = perfmon_init(1, &cpu);
if (ret != 0)
goto fail;
ret = perfmon_addEventSet(eventset_ok);
if (ret != 0)
goto fail;
group = ret;
ret = perfmon_setupCounters(group);
if (ret != 0)
goto fail;
ret = perfmon_startCounters();
if (ret != 0)
goto fail;
sleep(1);
ret = perfmon_stopCounters();
if (ret != 0)
goto fail;
if ((perfmon_getResult(group,0,0) == 0)||(perfmon_getResult(group,1,0) == 0))
goto fail;
if (perfmon_getTimeOfGroup(group) == 0)
goto fail;
perfmon_finalize();
topology_finalize();
return 1;
fail:
perfmon_finalize();
topology_finalize();
return 0;
}
int test_perfmonperfgroup()
{
CpuInfo_t cpuinfo;
int i;
int cpu = 0;
topology_init();
cpuinfo = get_cpuInfo();
int ret = perfmon_init(1, &cpu);
if (ret != 0) {
printf("Perfmon init failed\n");
goto fail;
}
char** glist = NULL;
char** slist = NULL;
char** llist = NULL;
ret = perfmon_getGroups(&glist, &slist, &llist);
if (ret <= 0)
{
goto fail;
}
ret = perfmon_addEventSet(glist[0]);
if (ret != 0) {
printf("Perfmon addEventSet(%s) failed\n", glist[0]);
goto fail;
}
if (perfmon_getNumberOfEvents(ret) == 0) {
printf("Perfmon number of events == 0\n");
goto fail;
}
if (perfmon_getNumberOfMetrics(ret) == 0) {
printf("Perfmon number of metrics == 0\n");
goto fail;
}
for (i=0; i<perfmon_getNumberOfEvents(ret); i++) {
if (strcmp(perfmon_getEventName(ret, i), "") == 0)
goto fail;
if (strcmp(perfmon_getCounterName(ret, i), "") == 0)
goto fail;
}
if (strcmp(perfmon_getGroupName(ret), "Custom") == 0)
{
goto fail;
}
if (strcmp(perfmon_getGroupInfoShort(ret), "Custom") == 0)
{
goto fail;
}
if (strcmp(perfmon_getGroupInfoLong(ret), "Custom") == 0)
{
goto fail;
}
if (perfmon_getLastTimeOfGroup(ret) != 0)
{
goto fail;
}
if (perfmon_getTimeOfGroup(ret) != 0)
{
goto fail;
}
for (i=0; i<perfmon_getNumberOfMetrics(ret); i++) {
if (strcmp(perfmon_getMetricName(ret, i), "") == 0)
goto fail;
if (perfmon_getMetric(ret, i, 0) != 0.0)
goto fail;
}
free(glist);
free(slist);
free(llist);
perfmon_finalize();
affinity_finalize();
topology_finalize();
return 1;
fail:
if (glist)
free(glist);
if (slist)
free(slist);
if (llist)
free(llist);
perfmon_finalize();
affinity_finalize();
topology_finalize();
return 0;
}
int test_perfmoncustomgroup()
{
CpuInfo_t cpuinfo;
int cpu = 0;
topology_init();
cpuinfo = get_cpuInfo();
int ret = perfmon_init(1, &cpu);
if (ret != 0) {
printf("Perfmon init failed\n");
goto fail;
}
ret = perfmon_addEventSet(eventset_ok);
if (ret != 0) {
printf("Perfmon addEventSet(ok) failed\n");
goto fail;
}
if (perfmon_getNumberOfEvents(ret) != 3) {
printf("Perfmon number of events != 3\n");
goto fail;
}
if (perfmon_getNumberOfMetrics(ret) != 0) {
printf("Perfmon number of metrics != 0\n");
goto fail;
}
if (strcmp(perfmon_getEventName(ret, 0), event1_ok) != 0)
{
goto fail;
}
if (strcmp(perfmon_getEventName(ret, 1), event2_ok) != 0)
{
goto fail;
}
if (strcmp(perfmon_getEventName(ret, 2), event3_ok) != 0)
{
goto fail;
}
if (strcmp(perfmon_getCounterName(ret, 0), ctr1_ok) != 0)
{
goto fail;
}
if (strcmp(perfmon_getCounterName(ret, 1), ctr2_ok) != 0)
{
goto fail;
}
if (strcmp(perfmon_getCounterName(ret, 2), ctr3_ok) != 0)
{
goto fail;
}
if (strcmp(perfmon_getGroupName(ret), "Custom") != 0)
{
goto fail;
}
if (strcmp(perfmon_getGroupInfoShort(ret), "Custom") != 0)
{
goto fail;
}
if (strcmp(perfmon_getGroupInfoLong(ret), "Custom") != 0)
{
goto fail;
}
if (perfmon_getLastTimeOfGroup(ret) != 0)
{
goto fail;
}
perfmon_finalize();
affinity_finalize();
topology_finalize();
return 1;
fail:
perfmon_finalize();
affinity_finalize();
topology_finalize();
return 0;
}
int test_perfmonaddeventset()
{
char eventset_fail1[] = "INSTR_RETIRED.ANY:FIXC0";
char eventset_fail2[] = "INSTR_RETIRED-ANY:FIXC0";
CpuInfo_t cpuinfo;
int cpu = 0;
topology_init();
cpuinfo = get_cpuInfo();
if (cpuinfo->isIntel == 0)
{
topology_finalize();
return 1;
}
int ret = perfmon_init(1, &cpu);
if (ret != 0) {
printf("Perfmon init failed\n");
goto fail;
}
if (perfmon_getNumberOfGroups() != 0) {
printf("Perfmon number of groups != 0\n");
goto fail;
}
if (perfmon_getNumberOfThreads() != 1) {
printf("Perfmon number of threads != 1\n");
goto fail;
}
if (perfmon_getIdOfActiveGroup() != -1) {
printf("Perfmon id of active group != -1\n");
goto fail;
}
ret = perfmon_addEventSet(eventset_ok);
if (ret != 0) {
printf("Perfmon addEventSet(ok) failed\n");
goto fail;
}
if (perfmon_getNumberOfGroups() != 1) {
printf("Perfmon number of groups != 1\n");
goto fail;
}
if (perfmon_getNumberOfEvents(ret) != 3) {
printf("Perfmon number of events != 3\n");
goto fail;
}
if (perfmon_getIdOfActiveGroup() != -1) {
printf("Perfmon id of active group != -1\n");
goto fail;
}
ret = perfmon_addEventSet(eventset_option);
if (ret != 1) {
printf("Perfmon addEventSet(options) failed\n");
goto fail;
}
if (perfmon_getNumberOfGroups() != 2) {
printf("Perfmon number of groups != 2\n");
goto fail;
}
if (perfmon_getNumberOfEvents(ret) != 3) {
printf("Perfmon number of events != 3\n");
goto fail;
}
if (perfmon_getIdOfActiveGroup() != -1) {
printf("Perfmon id of active group != -1\n");
goto fail;
}
ret = perfmon_addEventSet(eventset_fail1);
if (ret >= 0) {
printf("Perfmon addEventSet(fail1) failed\n");
goto fail;
}
if (perfmon_getNumberOfGroups() != 2) {
printf("Perfmon number of groups != 2\n");
goto fail;
}
ret = perfmon_addEventSet(eventset_fail2);
if (ret >= 0) {
printf("Perfmon addEventSet(fail2) failed\n");
goto fail;
}
if (perfmon_getNumberOfGroups() != 2) {
printf("Perfmon number of groups != 2\n");
goto fail;
}
if (perfmon_getIdOfActiveGroup() != -1) {
printf("Perfmon id of active group != -1\n");
goto fail;
}
perfmon_finalize();
affinity_finalize();
topology_finalize();
return 1;
fail:
perfmon_finalize();
affinity_finalize();
topology_finalize();
return 0;
}
void likwid_markerInit(void)
{
int i;
int verbosity;
bstring bThreadStr;
bstring bEventStr;
struct bstrList* threadTokens;
struct bstrList* eventStrings;
char* modeStr = getenv("LIKWID_MODE");
char* eventStr = getenv("LIKWID_EVENTS");
char* cThreadStr = getenv("LIKWID_THREADS");
char* filepath = getenv("LIKWID_FILEPATH");
/* Dirty hack to avoid nonnull warnings */
int (*ownatoi)(const char*);
ownatoi = &atoi;
if ((modeStr != NULL) && (filepath != NULL) && (eventStr != NULL) && (cThreadStr != NULL))
{
likwid_init = 1;
}
else if (likwid_init == 0)
{
fprintf(stderr, "Cannot initalize LIKWID marker API, environment variables are not set\n");
fprintf(stderr, "You have to set the -m commandline switch for likwid-perfctr\n");
return;
}
else
{
return;
}
if (!lock_check())
{
fprintf(stderr,"Access to performance counters is locked.\n");
exit(EXIT_FAILURE);
}
topology_init();
numa_init();
affinity_init();
hashTable_init();
for(int i=0; i<MAX_NUM_NODES; i++) socket_lock[i] = LOCK_INIT;
HPMmode(atoi(modeStr));
if (getenv("LIKWID_DEBUG") != NULL)
{
perfmon_verbosity = atoi(getenv("LIKWID_DEBUG"));
verbosity = perfmon_verbosity;
}
bThreadStr = bfromcstr(cThreadStr);
threadTokens = bstrListCreate();
threadTokens = bsplit(bThreadStr,',');
num_cpus = threadTokens->qty;
for (i=0; i<num_cpus; i++)
{
threads2Cpu[i] = ownatoi(bdata(threadTokens->entry[i]));
}
bdestroy(bThreadStr);
bstrListDestroy(threadTokens);
if (getenv("LIKWID_PIN") != NULL)
{
likwid_pinThread(threads2Cpu[0]);
if (getenv("OMP_NUM_THREADS") != NULL)
{
if (ownatoi(getenv("OMP_NUM_THREADS")) > num_cpus)
{
use_locks = 1;
}
}
if (getenv("CILK_NWORKERS") != NULL)
{
if (ownatoi(getenv("CILK_NWORKERS")) > num_cpus)
{
use_locks = 1;
}
}
}
i = perfmon_init(num_cpus, threads2Cpu);
if (i<0)
{
fprintf(stderr,"Failed to initialize LIKWID perfmon library.\n");
return;
}
bEventStr = bfromcstr(eventStr);
eventStrings = bstrListCreate();
eventStrings = bsplit(bEventStr,'|');
numberOfGroups = eventStrings->qty;
groups = malloc(numberOfGroups * sizeof(int));
if (!groups)
{
fprintf(stderr,"Cannot allocate space for group handling.\n");
bstrListDestroy(eventStrings);
exit(EXIT_FAILURE);
}
for (i=0; i<eventStrings->qty; i++)
{
groups[i] = perfmon_addEventSet(bdata(eventStrings->entry[i]));
}
bstrListDestroy(eventStrings);
bdestroy(bEventStr);
for (i=0; i<num_cpus; i++)
{
hashTable_initThread(threads2Cpu[i]);
for(int j=0; j<groupSet->groups[groups[0]].numberOfEvents;j++)
{
groupSet->groups[groups[0]].events[j].threadCounter[i].init = TRUE;
}
}
groupSet->activeGroup = 0;
}
void
likwid_markerInit(void)
{
int i;
int verbosity;
int setinit = 0;
bstring bThreadStr;
bstring bEventStr;
struct bstrList* threadTokens;
struct bstrList* eventStrings;
char* modeStr = getenv("LIKWID_MODE");
char* eventStr = getenv("LIKWID_EVENTS");
char* cThreadStr = getenv("LIKWID_THREADS");
char* filepath = getenv("LIKWID_FILEPATH");
char* perfpid = getenv("LIKWID_PERF_EXECPID");
char execpid[20];
/* Dirty hack to avoid nonnull warnings */
int (*ownatoi)(const char*);
ownatoi = &atoi;
if ((modeStr != NULL) && (filepath != NULL) && (eventStr != NULL) && (cThreadStr != NULL) && likwid_init == 0)
{
setinit = 1;
}
else if (likwid_init == 0)
{
fprintf(stderr, "Running without Marker API. Activate Marker API with -m on commandline.\n");
return;
}
else
{
return;
}
if (!lock_check())
{
fprintf(stderr,"Access to performance counters is locked.\n");
exit(EXIT_FAILURE);
}
topology_init();
numa_init();
affinity_init();
hashTable_init();
//#ifndef LIKWID_USE_PERFEVENT
HPMmode(atoi(modeStr));
//#endif
if (getenv("LIKWID_DEBUG") != NULL)
{
perfmon_verbosity = atoi(getenv("LIKWID_DEBUG"));
verbosity = perfmon_verbosity;
}
bThreadStr = bfromcstr(cThreadStr);
threadTokens = bsplit(bThreadStr,',');
num_cpus = threadTokens->qty;
for (i=0; i<num_cpus; i++)
{
threads2Cpu[i] = ownatoi(bdata(threadTokens->entry[i]));
}
bdestroy(bThreadStr);
bstrListDestroy(threadTokens);
if (getenv("LIKWID_PIN") != NULL)
{
likwid_pinThread(threads2Cpu[0]);
if (getenv("OMP_NUM_THREADS") != NULL)
{
if (ownatoi(getenv("OMP_NUM_THREADS")) > num_cpus)
{
use_locks = 1;
}
}
if (getenv("CILK_NWORKERS") != NULL)
{
if (ownatoi(getenv("CILK_NWORKERS")) > num_cpus)
{
use_locks = 1;
}
}
}
#ifdef LIKWID_USE_PERFEVENT
if (perfpid != NULL)
{
snprintf(execpid, 19, "%d", getpid());
setenv("LIKWID_PERF_PID", execpid, 1);
char* perfflags = getenv("LIKWID_PERF_FLAGS");
if (perfflags)
{
setenv("LIKWID_PERF_FLAGS", getenv("LIKWID_PERF_FLAGS"), 1);
}
}
#endif
i = perfmon_init(num_cpus, threads2Cpu);
if (i<0)
{
//fprintf(stderr,"Failed to initialize LIKWID perfmon library.\n");
return;
}
bEventStr = bfromcstr(eventStr);
eventStrings = bsplit(bEventStr,'|');
numberOfGroups = eventStrings->qty;
groups = malloc(numberOfGroups * sizeof(int));
if (!groups)
{
fprintf(stderr,"Cannot allocate space for group handling.\n");
bstrListDestroy(eventStrings);
exit(EXIT_FAILURE);
}
for (i=0; i<eventStrings->qty; i++)
{
groups[i] = perfmon_addEventSet(bdata(eventStrings->entry[i]));
}
bstrListDestroy(eventStrings);
bdestroy(bEventStr);
for (i=0; i<num_cpus; i++)
{
hashTable_initThread(threads2Cpu[i]);
for(int j=0; j<groupSet->groups[groups[0]].numberOfEvents;j++)
{
groupSet->groups[groups[0]].events[j].threadCounter[i].init = TRUE;
groupSet->groups[groups[0]].state = STATE_START;
}
}
if (setinit)
{
likwid_init = 1;
}
threads2Pthread[registered_cpus] = pthread_self();
registered_cpus++;
groupSet->activeGroup = 0;
perfmon_setupCounters(groupSet->activeGroup);
perfmon_startCounters();
}
int main(int argn, char** argc)
{
int err, i ,j;
int numCPUs = 0;
int gid;
DATATYPE *a,*b,*c,*d;
TimeData timer;
double triad_time, copy_time, scale_time, stream_time;
char estr[1024];
double result, scalar = 3.0;
char* ptr;
if (argn != 3)
{
printf("Usage: %s <cpustr> <events>\n", argc[0]);
return 1;
}
strcpy(estr, argc[2]);
allocate_vector(&a, SIZE);
allocate_vector(&b, SIZE);
allocate_vector(&c, SIZE);
allocate_vector(&d, SIZE);
err = topology_init();
if (err < 0)
{
printf("Failed to initialize LIKWID's topology module\n");
return 1;
}
CpuTopology_t topo = get_cpuTopology();
affinity_init();
int* cpus = (int*)malloc(topo->numHWThreads * sizeof(int));
if (!cpus)
return 1;
numCPUs = cpustr_to_cpulist(argc[1], cpus, topo->numHWThreads);
omp_set_num_threads(numCPUs);
err = perfmon_init(numCPUs, cpus);
if (err < 0)
{
printf("Failed to initialize LIKWID's performance monitoring module\n");
affinity_finalize();
topology_finalize();
return 1;
}
gid = perfmon_addEventSet(estr);
if (gid < 0)
{
printf("Failed to add event string %s to LIKWID's performance monitoring module\n", estr);
perfmon_finalize();
affinity_finalize();
topology_finalize();
return 1;
}
err = perfmon_setupCounters(gid);
if (err < 0)
{
printf("Failed to setup group %d in LIKWID's performance monitoring module\n", gid);
perfmon_finalize();
affinity_finalize();
topology_finalize();
return 1;
}
#ifdef _OPENMP
printf(HLINE);
#pragma omp parallel
{
#pragma omp master
{
printf ("Number of Threads requested = %i\n",omp_get_num_threads());
}
likwid_pinThread(cpus[omp_get_thread_num()]);
printf ("Thread %d running on processor %d ....\n",omp_get_thread_num(),sched_getcpu());
}
#endif
#pragma omp parallel for
for (int j=0; j<SIZE; j++) {
a[j] = 1.0;
b[j] = 2.0;
c[j] = 0.0;
d[j] = 1.0;
}
err = perfmon_startCounters();
if (err < 0)
{
printf("Failed to start counters for group %d for thread %d\n",gid, (-1*err)-1);
perfmon_finalize();
topology_finalize();
return 1;
}
time_start(&timer);
#pragma omp parallel
{
for (int k=0; k<ITER; k++)
{
LIKWID_MARKER_START("copy");
#pragma omp for
for (int j=0; j<SIZE; j++)
{
c[j] = a[j];
}
LIKWID_MARKER_STOP("copy");
}
}
time_stop(&timer);
err = perfmon_stopCounters();
copy_time = time_print(&timer)/(double)ITER;
if (err < 0)
{
printf("Failed to stop counters for group %d for thread %d\n",gid, (-1*err)-1);
perfmon_finalize();
topology_finalize();
return 1;
}
printf("Processed %.1f Mbyte at copy benchmark in %.4f seconds: %.2f MByte/s\n",
1E-6*(2*SIZE*sizeof(DATATYPE)),
copy_time,
1E-6*((2*SIZE*sizeof(DATATYPE))/copy_time));
ptr = strtok(estr,",");
j = 0;
while (ptr != NULL)
{
for (i = 0;i < numCPUs; i++)
{
result = perfmon_getResult(gid, j, cpus[i]);
printf("Measurement result for event set %s at CPU %d: %f\n", ptr, cpus[i], result);
}
ptr = strtok(NULL,",");
j++;
}
strcpy(estr, argc[2]);
perfmon_setupCounters(gid);
err = perfmon_startCounters();
if (err < 0)
{
printf("Failed to start counters for group %d for thread %d\n",gid, (-1*err)-1);
perfmon_finalize();
topology_finalize();
return 1;
}
time_start(&timer);
#pragma omp parallel
{
for (int k=0; k<ITER; k++)
{
LIKWID_MARKER_START("scale");
#pragma omp for
for (int j=0; j<SIZE; j++)
{
b[j] = scalar*c[j];
}
LIKWID_MARKER_STOP("scale");
}
}
time_stop(&timer);
err = perfmon_stopCounters();
scale_time = time_print(&timer)/(double)ITER;
if (err < 0)
{
printf("Failed to stop counters for group %d for thread %d\n",gid, (-1*err)-1);
perfmon_finalize();
topology_finalize();
return 1;
}
printf("Processed %.1f Mbyte at scale benchmark in %.4f seconds: %.2f MByte/s\n",
1E-6*(2*SIZE*sizeof(DATATYPE)),
copy_time,
1E-6*((2*SIZE*sizeof(DATATYPE))/copy_time));
ptr = strtok(estr,",");
j = 0;
while (ptr != NULL)
{
for (i = 0;i < numCPUs; i++)
{
result = perfmon_getResult(gid, j, cpus[i]);
printf("Measurement result for event set %s at CPU %d: %f\n", ptr, cpus[i], result);
}
ptr = strtok(NULL,",");
j++;
}
strcpy(estr, argc[2]);
perfmon_setupCounters(gid);
err = perfmon_startCounters();
if (err < 0)
{
printf("Failed to start counters for group %d for thread %d\n",gid, (-1*err)-1);
perfmon_finalize();
topology_finalize();
return 1;
}
time_start(&timer);
#pragma omp parallel
{
for (int k=0; k<ITER; k++)
{
LIKWID_MARKER_START("stream");
#pragma omp for
for (int j=0; j<SIZE; j++)
{
c[j] = a[j] + b[j];
}
LIKWID_MARKER_STOP("stream");
}
}
time_stop(&timer);
err = perfmon_stopCounters();
stream_time = time_print(&timer)/(double)ITER;
if (err < 0)
{
printf("Failed to stop counters for group %d for thread %d\n",gid, (-1*err)-1);
perfmon_finalize();
topology_finalize();
return 1;
}
printf("Processed %.1f Mbyte at stream benchmark in %.4f seconds: %.2f MByte/s\n",
1E-6*(2*SIZE*sizeof(DATATYPE)),
copy_time,
1E-6*((2*SIZE*sizeof(DATATYPE))/copy_time));
ptr = strtok(estr,",");
j = 0;
while (ptr != NULL)
{
for (i = 0;i < numCPUs; i++)
{
result = perfmon_getResult(gid, j, cpus[i]);
printf("Measurement result for event set %s at CPU %d: %f\n", ptr, cpus[i], result);
}
ptr = strtok(NULL,",");
j++;
}
strcpy(estr, argc[2]);
perfmon_setupCounters(gid);
err = perfmon_startCounters();
if (err < 0)
{
printf("Failed to start counters for group %d for thread %d\n",gid, (-1*err)-1);
perfmon_finalize();
topology_finalize();
return 1;
}
time_start(&timer);
#pragma omp parallel
{
for (int k=0; k<ITER; k++)
{
LIKWID_MARKER_START("triad");
#pragma omp for
for (int j=0; j<SIZE; j++)
{
a[j] = b[j] + c[j] * scalar;
}
LIKWID_MARKER_STOP("triad");
}
}
time_stop(&timer);
err = perfmon_stopCounters();
triad_time = time_print(&timer)/(double)ITER;
if (err < 0)
{
printf("Failed to stop counters for group %d for thread %d\n",gid, (-1*err)-1);
perfmon_finalize();
topology_finalize();
return 1;
}
printf("Processed %.1f Mbyte at triad benchmark in %.4f seconds: %.2f MByte/s\n",
1E-6*(4*SIZE*sizeof(DATATYPE)),
triad_time,
1E-6*((4*SIZE*sizeof(DATATYPE))/triad_time));
ptr = strtok(estr,",");
j = 0;
while (ptr != NULL)
{
for (i = 0;i < numCPUs; i++)
{
result = perfmon_getResult(gid, j, cpus[i]);
printf("Measurement result for event set %s at CPU %d: %f\n", ptr, cpus[i], result);
}
ptr = strtok(NULL,",");
j++;
}
perfmon_finalize();
affinity_finalize();
topology_finalize();
return 0;
}
int main(int argc, char* argv[])
{
int i, j;
int err;
int* cpus;
int gid;
double result = 0.0;
char estr[] = "INSTR_RETIRED_ANY:FIXC0,CPU_CLK_UNHALTED_CORE:FIXC1,CPU_CLK_UNHALTED_REF:FIXC2,TEMP_CORE:TMP0";
// Load the topology module and print some values.
err = topology_init();
if (err < 0)
{
printf("Failed to initialize LIKWID's topology module\n");
return 1;
}
// CpuInfo_t contains global information like name, CPU family, ...
CpuInfo_t info = get_cpuInfo();
// CpuTopology_t contains information about the topology of the CPUs.
CpuTopology_t topo = get_cpuTopology();
// Create affinity domains. Commonly only needed when reading Uncore counters
//affinity_init();
printf("Likwid example on a %s with %d CPUs\n", info->name, topo->numHWThreads);
cpus = (int*)malloc(topo->numHWThreads * sizeof(int));
if (!cpus)
return 1;
for (i=0;i<topo->numHWThreads;i++)
{
cpus[i] = topo->threadPool[i].apicId;
}
// Must be called before perfmon_init() but only if you want to use another
// access mode as the pre-configured one. For direct access (0) you have to
// be root.
//accessClient_setaccessmode(0);
// Initialize the perfmon module.
err = perfmon_init(topo->numHWThreads, cpus);
if (err < 0)
{
printf("Failed to initialize LIKWID's performance monitoring module\n");
topology_finalize();
return 1;
}
// Add eventset string to the perfmon module.
gid = perfmon_addEventSet(estr);
if (gid < 0)
{
printf("Failed to add event string %s to LIKWID's performance monitoring module\n", estr);
perfmon_finalize();
topology_finalize();
return 1;
}
// Setup the eventset identified by group ID (gid).
err = perfmon_setupCounters(gid);
if (err < 0)
{
printf("Failed to setup group %d in LIKWID's performance monitoring module\n", gid);
perfmon_finalize();
topology_finalize();
return 1;
}
// Start all counters in the previously set up event set.
err = perfmon_startCounters();
if (err < 0)
{
printf("Failed to start counters for group %d for thread %d\n",gid, (-1*err)-1);
perfmon_finalize();
topology_finalize();
return 1;
}
// Perform something
sleep(2);
// Stop all counters in the previously started event set.
err = perfmon_stopCounters();
if (err < 0)
{
printf("Failed to stop counters for group %d for thread %d\n",gid, (-1*err)-1);
perfmon_finalize();
topology_finalize();
return 1;
}
// Print the result of every thread/CPU for all events in estr.
char* ptr = strtok(estr,",");
j = 0;
while (ptr != NULL)
{
for (i = 0;i < topo->numHWThreads; i++)
{
result = perfmon_getResult(gid, j, cpus[i]);
printf("Measurement result for event set %s at CPU %d: %f\n", ptr, cpus[i], result);
}
ptr = strtok(NULL,",");
j++;
}
// Uninitialize the perfmon module.
perfmon_finalize();
// Uninitialize the topology module.
topology_finalize();
return 0;
}