ClusterCockpit/cc-metric-collector
1
0
Fork 0
mirror of https://github.com/ClusterCockpit/cc-metric-collector.git synced 2025-07-19 03:11:41 +02:00
Code Issues Packages Projects Releases Wiki Activity

Fix for Likwid collector (#95)

Browse Source 
* Run LIKWID in separate thread and check metric type

* Change LIKWID collector documentation to use 'type' instead of 'scope'

* Re-initialize LIKWID after one read is missing due to lock toggle
This commit is contained in:
Thomas Gruber
2022-12-14 16:53:08 +01:00
committed by GitHub
parent a1f4dd6a6c
commit efd4f5feb4
2 changed files with 167 additions and 98 deletions
Download Patch File Download Diff File Expand all files Collapse all files

247
collectors/likwidMetric.go
View File

@@ -28,6 +28,7 @@ import (
lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
topo "github.com/ClusterCockpit/cc-metric-collector/pkg/ccTopology"
"github.com/NVIDIA/go-nvml/pkg/dl"
"golang.design/x/thread"
)
const (
@@ -71,18 +72,20 @@ type LikwidCollectorConfig struct {
type LikwidCollector struct {
metricCollector
cpulist []C.int
cpu2tid map[int]int
sock2tid map[int]int
metrics map[C.int]map[string]int
groups []C.int
config LikwidCollectorConfig
gmresults map[int]map[string]float64
basefreq float64
running bool
initialized bool
likwidGroups map[C.int]LikwidEventsetConfig
lock sync.Mutex
cpulist []C.int
cpu2tid map[int]int
sock2tid map[int]int
metrics map[C.int]map[string]int
groups []C.int
config LikwidCollectorConfig
gmresults map[int]map[string]float64
basefreq float64
running bool
initialized bool
needs_reinit bool
likwidGroups map[C.int]LikwidEventsetConfig
lock sync.Mutex
measureThread thread.Thread
}
type LikwidMetric struct {
@@ -92,6 +95,18 @@ type LikwidMetric struct {
group_idx int
}
func checkMetricType(t string) bool {
valid := map[string]bool{
"node": true,
"socket": true,
"hwthread": true,
"core": true,
"memoryDomain": true,
}
_, ok := valid[t]
return ok
}
func eventsToEventStr(events map[string]string) string {
elist := make([]string, 0)
for k, v := range events {
@@ -179,6 +194,7 @@ func (m *LikwidCollector) Init(config json.RawMessage) error {
m.name = "LikwidCollector"
m.parallel = false
m.initialized = false
m.needs_reinit = true
m.running = false
m.config.AccessMode = LIKWID_DEF_ACCESSMODE
m.config.LibraryPath = LIKWID_LIB_NAME
@@ -239,7 +255,7 @@ func (m *LikwidCollector) Init(config json.RawMessage) error {
}
for _, metric := range evset.Metrics {
// Try to evaluate the metric
if testLikwidMetricFormula(metric.Calc, params) {
if testLikwidMetricFormula(metric.Calc, params) && checkMetricType(metric.Type) {
// Add the computable metric to the parameter list for the global metrics
globalParams = append(globalParams, metric.Name)
totalMetrics++
@@ -257,6 +273,9 @@ func (m *LikwidCollector) Init(config json.RawMessage) error {
if !testLikwidMetricFormula(metric.Calc, globalParams) {
cclog.ComponentError(m.name, "Calculation for metric", metric.Name, "failed")
metric.Calc = ""
} else if !checkMetricType(metric.Type) {
cclog.ComponentError(m.name, "Metric", metric.Name, "has invalid type")
metric.Calc = ""
} else {
totalMetrics++
}
@@ -268,6 +287,7 @@ func (m *LikwidCollector) Init(config json.RawMessage) error {
cclog.ComponentError(m.name, err.Error())
return err
}
m.measureThread = thread.New()
m.init = true
return nil
}
@@ -281,6 +301,7 @@ func (m *LikwidCollector) takeMeasurement(evset LikwidEventsetConfig, interval t
if ret != 0 {
var err error = nil
var skip bool = false
cclog.ComponentDebug(m.name, "Setup returns", ret)
if ret == -37 {
skip = true
} else {
@@ -289,6 +310,7 @@ func (m *LikwidCollector) takeMeasurement(evset LikwidEventsetConfig, interval t
m.lock.Unlock()
return skip, err
}
m.running = true
ret = C.perfmon_startCounters()
if ret != 0 {
var err error = nil
@@ -301,7 +323,7 @@ func (m *LikwidCollector) takeMeasurement(evset LikwidEventsetConfig, interval t
m.lock.Unlock()
return skip, err
}
m.running = true
ret = C.perfmon_readCounters()
time.Sleep(interval)
m.running = false
ret = C.perfmon_stopCounters()
@@ -316,6 +338,24 @@ func (m *LikwidCollector) takeMeasurement(evset LikwidEventsetConfig, interval t
m.lock.Unlock()
return skip, err
}
m.running = false
runtime := float64(C.perfmon_getLastTimeOfGroup(evset.gid))
// Go over events and get the results
for eidx, counter := range evset.eorder {
gctr := C.GoString(counter)
for _, tid := range m.cpu2tid {
res := C.perfmon_getLastResult(evset.gid, C.int(eidx), C.int(tid))
fres := float64(res)
if m.config.InvalidToZero && (math.IsNaN(fres) || math.IsInf(fres, 0)) {
cclog.ComponentDebug(m.name, "Sanitize", gctr, "to zero")
fres = 0.0
}
evset.results[tid][gctr] = fres
}
}
for _, tid := range m.cpu2tid {
evset.results[tid]["time"] = runtime
}
}
m.lock.Unlock()
return false, nil
@@ -325,19 +365,8 @@ func (m *LikwidCollector) takeMeasurement(evset LikwidEventsetConfig, interval t
func (m *LikwidCollector) calcEventsetMetrics(evset LikwidEventsetConfig, interval time.Duration, output chan lp.CCMetric) error {
invClock := float64(1.0 / m.basefreq)
// Go over events and get the results
for eidx, counter := range evset.eorder {
gctr := C.GoString(counter)
for _, tid := range m.cpu2tid {
res := C.perfmon_getLastResult(evset.gid, C.int(eidx), C.int(tid))
fres := float64(res)
if m.config.InvalidToZero && (math.IsNaN(fres) || math.IsInf(fres, 0)) {
fres = 0.0
}
evset.results[tid][gctr] = fres
evset.results[tid]["time"] = interval.Seconds()
evset.results[tid]["inverseClock"] = invClock
}
for _, tid := range m.cpu2tid {
evset.results[tid]["inverseClock"] = invClock
}
// Go over the event set metrics, derive the value out of the event:counter values and send it
@@ -431,6 +460,28 @@ func (m *LikwidCollector) calcGlobalMetrics(interval time.Duration, output chan
return nil
}
func (m *LikwidCollector) ReInit() error {
C.perfmon_finalize()
ret := C.perfmon_init(C.int(len(m.cpulist)), &m.cpulist[0])
if ret != 0 {
return nil
}
for i, evset := range m.config.Eventsets {
var gid C.int
if len(evset.Events) > 0 {
//skip := false
likwidGroup := genLikwidEventSet(evset)
gid = C.perfmon_addEventSet(likwidGroup.estr)
if gid >= 0 {
likwidGroup.gid = gid
likwidGroup.internal = i
m.likwidGroups[gid] = likwidGroup
}
}
}
return nil
}
func (m *LikwidCollector) LateInit() error {
var ret C.int
if m.initialized {
@@ -445,6 +496,9 @@ func (m *LikwidCollector) LateInit() error {
os.Setenv("PATH", m.config.DaemonPath+":"+p)
}
C.HPMmode(1)
for _, c := range m.cpulist {
C.HPMaddThread(c)
}
}
cclog.ComponentDebug(m.name, "initialize LIKWID topology")
ret = C.topology_init()
@@ -468,48 +522,53 @@ func (m *LikwidCollector) LateInit() error {
m.basefreq = getBaseFreq()
cclog.ComponentDebug(m.name, "BaseFreq", m.basefreq)
cclog.ComponentDebug(m.name, "initialize LIKWID perfmon module")
ret = C.perfmon_init(C.int(len(m.cpulist)), &m.cpulist[0])
if ret != 0 {
var err error = nil
C.topology_finalize()
if ret != -22 {
err = errors.New("failed to initialize LIKWID perfmon")
cclog.ComponentError(m.name, err.Error())
} else {
err = errors.New("access to LIKWID perfmon locked")
}
return err
if m.needs_reinit {
m.ReInit()
m.needs_reinit = false
}
// While adding the events, we test the metrics whether they can be computed at all
for i, evset := range m.config.Eventsets {
var gid C.int
if len(evset.Events) > 0 {
skip := false
likwidGroup := genLikwidEventSet(evset)
for _, g := range m.likwidGroups {
if likwidGroup.go_estr == g.go_estr {
skip = true
break
}
}
if skip {
continue
}
// Now we add the list of events to likwid
gid = C.perfmon_addEventSet(likwidGroup.estr)
if gid >= 0 {
likwidGroup.gid = gid
likwidGroup.internal = i
m.likwidGroups[gid] = likwidGroup
}
} else {
cclog.ComponentError(m.name, "Invalid Likwid eventset config, no events given")
continue
}
// cclog.ComponentDebug(m.name, "initialize LIKWID perfmon module")
// ret = C.perfmon_init(C.int(len(m.cpulist)), &m.cpulist[0])
// if ret != 0 {
// var err error = nil
// C.topology_finalize()
// if ret != -22 {
// err = errors.New("failed to initialize LIKWID perfmon")
// cclog.ComponentError(m.name, err.Error())
// } else {
// err = errors.New("access to LIKWID perfmon locked")
// }
// return err
// }
}
// // While adding the events, we test the metrics whether they can be computed at all
// for i, evset := range m.config.Eventsets {
// var gid C.int
// if len(evset.Events) > 0 {
// //skip := false
// likwidGroup := genLikwidEventSet(evset)
// // for _, g := range m.likwidGroups {
// // if likwidGroup.go_estr == g.go_estr {
// // skip = true
// // break
// // }
// // }
// // if skip {
// // continue
// // }
// // Now we add the list of events to likwid
// gid = C.perfmon_addEventSet(likwidGroup.estr)
// if gid >= 0 {
// likwidGroup.gid = gid
// likwidGroup.internal = i
// m.likwidGroups[gid] = likwidGroup
// }
// } else {
// cclog.ComponentError(m.name, "Invalid Likwid eventset config, no events given")
// continue
// }
// }
// If no event set could be added, shut down LikwidCollector
if len(m.likwidGroups) == 0 {
@@ -540,38 +599,48 @@ func (m *LikwidCollector) Read(interval time.Duration, output chan lp.CCMetric)
return
}
if !m.initialized {
m.lock.Lock()
err = m.LateInit()
if err != nil {
m.measureThread.Call(func() {
if !m.initialized {
m.lock.Lock()
err = m.LateInit()
if err != nil {
m.lock.Unlock()
cclog.ComponentError(m.name, "lateinit failed")
return
}
m.initialized = true
m.lock.Unlock()
return
skip = true
}
m.initialized = true
m.lock.Unlock()
}
if m.initialized && !skip {
for _, evset := range m.likwidGroups {
if !skip {
// measure event set 'i' for 'interval' seconds
skip, err = m.takeMeasurement(evset, interval)
if err != nil {
cclog.ComponentError(m.name, err.Error())
return
if m.initialized && !skip {
time := interval
for _, evset := range m.likwidGroups {
if !skip {
// measure event set 'i' for 'interval' seconds
skip, err = m.takeMeasurement(evset, interval)
if err != nil {
cclog.ComponentError(m.name, err.Error())
return
}
}
if !skip {
// read measurements and derive event set metrics
m.calcEventsetMetrics(evset, time, output)
}
}
if !skip {
// read measurements and derive event set metrics
m.calcEventsetMetrics(evset, interval, output)
// use the event set metrics to derive the global metrics
m.calcGlobalMetrics(time, output)
}
if skip {
m.needs_reinit = true
m.initialized = false
}
}
if !skip {
// use the event set metrics to derive the global metrics
m.calcGlobalMetrics(interval, output)
}
}
})
}
func (m *LikwidCollector) Close() {