Improve validate GPU runs and web UI feedback

audit/internal/webui/charts_svg.go

@@ -6,6 +6,7 @@ import (
 	"sort"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 
 	"bee/audit/internal/platform"
@@ -52,6 +53,12 @@ var metricChartPalette = []string{
 	"#ffbe5c",
 }
 
+var gpuLabelCache struct {
+	mu        sync.Mutex
+	loadedAt  time.Time
+	byIndex   map[int]string
+}
+
 func renderMetricChartSVG(title string, labels []string, times []time.Time, datasets [][]float64, names []string, yMin, yMax *float64, canvasHeight int, timeline []chartTimelineSegment) ([]byte, error) {
 	pointCount := len(labels)
 	if len(times) > pointCount {
@@ -76,15 +83,7 @@ func renderMetricChartSVG(title string, labels []string, times []time.Time, data
 		}
 	}
 
-	mn, avg, mx := globalStats(datasets)
+	statsLabel := chartStatsLabel(datasets)
-	if mx > 0 {
-		title = fmt.Sprintf("%s    ↓%s  ~%s  ↑%s",
-			title,
-			chartLegendNumber(mn),
-			chartLegendNumber(avg),
-			chartLegendNumber(mx),
-		)
-	}
 
 	legendItems := []metricChartSeries{}
 	for i, name := range names {
@@ -106,7 +105,7 @@ func renderMetricChartSVG(title string, labels []string, times []time.Time, data
 
 	var b strings.Builder
 	writeSVGOpen(&b, layout.Width, layout.Height)
-	writeChartFrame(&b, title, layout.Width, layout.Height)
+	writeChartFrame(&b, title, statsLabel, layout.Width, layout.Height)
 	writeTimelineIdleSpans(&b, layout, start, end, timeline)
 	writeVerticalGrid(&b, layout, times, pointCount, 8)
 	writeHorizontalGrid(&b, layout, scale)
@@ -133,7 +132,7 @@ func renderGPUOverviewChartSVG(idx int, samples []platform.LiveMetricSample, tim
 	labels := sampleTimeLabels(samples)
 	times := sampleTimes(samples)
 	svg, err := drawGPUOverviewChartSVG(
-		fmt.Sprintf("GPU %d Overview", idx),
+		gpuDisplayLabel(idx)+" Overview",
 		labels,
 		times,
 		[]metricChartSeries{
@@ -214,7 +213,7 @@ func drawGPUOverviewChartSVG(title string, labels []string, times []time.Time, s
 
 	var b strings.Builder
 	writeSVGOpen(&b, width, height)
-	writeChartFrame(&b, title, width, height)
+	writeChartFrame(&b, title, "", width, height)
 	writeTimelineIdleSpans(&b, layout, start, end, timeline)
 	writeVerticalGrid(&b, layout, times, pointCount, 8)
 	writeHorizontalGrid(&b, layout, scales[0])
@@ -457,10 +456,14 @@ func writeSVGClose(b *strings.Builder) {
 	b.WriteString("</svg>\n")
 }
 
-func writeChartFrame(b *strings.Builder, title string, width, height int) {
+func writeChartFrame(b *strings.Builder, title, subtitle string, width, height int) {
 	fmt.Fprintf(b, `<rect width="%d" height="%d" rx="10" ry="10" fill="#ffffff" stroke="#d7e0ea"/>`+"\n", width, height)
 	fmt.Fprintf(b, `<text x="%d" y="30" text-anchor="middle" font-family="sans-serif" font-size="16" font-weight="700" fill="#1f2937">%s</text>`+"\n",
 		width/2, sanitizeChartText(title))
+	if strings.TrimSpace(subtitle) != "" {
+		fmt.Fprintf(b, `<text x="%d" y="50" text-anchor="middle" font-family="sans-serif" font-size="12" font-weight="600" fill="#64748b">%s</text>`+"\n",
+			width/2, sanitizeChartText(subtitle))
+	}
 }
 
 func writePlotBorder(b *strings.Builder, layout chartLayout) {
@@ -545,7 +548,21 @@ func writeSeriesPolyline(b *strings.Builder, layout chartLayout, times []time.Ti
 		x := chartXForTime(chartPointTime(times, 0), start, end, layout.PlotLeft, layout.PlotRight)
 		y := chartYForValue(values[0], scale, layout.PlotTop, layout.PlotBottom)
 		fmt.Fprintf(b, `<circle cx="%.1f" cy="%.1f" r="3.5" fill="%s"/>`+"\n", x, y, color)
+		return
 	}
+	peakIdx := 0
+	peakValue := values[0]
+	for idx, value := range values[1:] {
+		if value >= peakValue {
+			peakIdx = idx + 1
+			peakValue = value
+		}
+	}
+	x := chartXForTime(chartPointTime(times, peakIdx), start, end, layout.PlotLeft, layout.PlotRight)
+	y := chartYForValue(peakValue, scale, layout.PlotTop, layout.PlotBottom)
+	fmt.Fprintf(b, `<circle cx="%.1f" cy="%.1f" r="4.2" fill="%s" stroke="#ffffff" stroke-width="1.6"/>`+"\n", x, y, color)
+	fmt.Fprintf(b, `<path d="M %.1f %.1f L %.1f %.1f L %.1f %.1f Z" fill="%s" opacity="0.9"/>`+"\n",
+		x, y-10, x-5, y-18, x+5, y-18, color)
 }
 
 func writeLegend(b *strings.Builder, layout chartLayout, series []metricChartSeries) {
@@ -711,3 +728,49 @@ func valueClamp(value float64, scale chartScale) float64 {
 	}
 	return value
 }
+
+func chartStatsLabel(datasets [][]float64) string {
+	mn, avg, mx := globalStats(datasets)
+	if mx <= 0 && avg <= 0 && mn <= 0 {
+		return ""
+	}
+	return fmt.Sprintf("min %s   avg %s   max %s",
+		chartLegendNumber(mn),
+		chartLegendNumber(avg),
+		chartLegendNumber(mx),
+	)
+}
+
+func gpuDisplayLabel(idx int) string {
+	if name := gpuModelNameByIndex(idx); name != "" {
+		return fmt.Sprintf("GPU %d — %s", idx, name)
+	}
+	return fmt.Sprintf("GPU %d", idx)
+}
+
+func gpuModelNameByIndex(idx int) string {
+	now := time.Now()
+	gpuLabelCache.mu.Lock()
+	if now.Sub(gpuLabelCache.loadedAt) > 30*time.Second || gpuLabelCache.byIndex == nil {
+		gpuLabelCache.loadedAt = now
+		gpuLabelCache.byIndex = loadGPUModelNames()
+	}
+	name := strings.TrimSpace(gpuLabelCache.byIndex[idx])
+	gpuLabelCache.mu.Unlock()
+	return name
+}
+
+func loadGPUModelNames() map[int]string {
+	out := map[int]string{}
+	gpus, err := platform.New().ListNvidiaGPUs()
+	if err != nil {
+		return out
+	}
+	for _, gpu := range gpus {
+		name := strings.TrimSpace(gpu.Name)
+		if name != "" {
+			out[gpu.Index] = name
+		}
+	}
+	return out
+}

audit/internal/webui/pages.go

@@ -860,6 +860,35 @@ func renderMetrics() string {
 <script>
 let gpuChartKey = '';
 const gpuChartModeStorageKey = 'bee.metrics.gpuChartMode';
+let metricsNvidiaGPUsPromise = null;
+
+function loadMetricsNvidiaGPUs() {
+  if (!metricsNvidiaGPUsPromise) {
+    metricsNvidiaGPUsPromise = fetch('/api/gpu/nvidia')
+      .then(function(r) {
+        if (!r.ok) throw new Error('Failed to load NVIDIA GPUs.');
+        return r.json();
+      })
+      .then(function(list) { return Array.isArray(list) ? list : []; })
+      .catch(function() { return []; });
+  }
+  return metricsNvidiaGPUsPromise;
+}
+
+function metricsGPUNameMap(list) {
+  const out = {};
+  (list || []).forEach(function(gpu) {
+    const idx = Number(gpu.index);
+    if (!Number.isFinite(idx) || !gpu.name) return;
+    out[idx] = gpu.name;
+  });
+  return out;
+}
+
+function metricsGPUDisplayLabel(idx, names) {
+  const name = names && names[idx];
+  return name ? ('GPU ' + idx + ' — ' + name) : ('GPU ' + idx);
+}
 
 function loadGPUChartModePreference() {
   try {
@@ -909,14 +938,15 @@ function gpuIndices(rows) {
   return out.sort(function(a, b) { return a - b; });
 }
 
-function renderGPUOverviewCards(indices) {
+function renderGPUOverviewCards(indices, names) {
   const host = document.getElementById('gpu-metrics-by-gpu');
   if (!host) return;
   host.innerHTML = indices.map(function(idx) {
+    const label = metricsGPUDisplayLabel(idx, names);
     return '<div class="card" style="margin-bottom:16px">' +
-      '<div class="card-head">GPU ' + idx + ' — Overview</div>' +
+      '<div class="card-head">' + label + ' — Overview</div>' +
       '<div class="card-body" style="padding:8px">' +
-      '<img id="chart-gpu-' + idx + '-overview" data-chart-refresh="1" src="/api/metrics/chart/gpu/' + idx + '-overview.svg" style="width:100%;display:block;border-radius:6px" alt="GPU ' + idx + ' overview">' +
+      '<img id="chart-gpu-' + idx + '-overview" data-chart-refresh="1" src="/api/metrics/chart/gpu/' + idx + '-overview.svg" style="width:100%;display:block;border-radius:6px" alt="' + label + ' overview">' +
       '</div></div>';
   }).join('');
 }
@@ -936,18 +966,21 @@ function syncMetricsLayout(d) {
   const section = document.getElementById('gpu-metrics-section');
   const summary = document.getElementById('gpu-metrics-summary');
   const indices = gpuIndices(d.gpus);
+  loadMetricsNvidiaGPUs().then(function(gpus) {
+    const names = metricsGPUNameMap(gpus);
     if (section) section.style.display = indices.length > 0 ? '' : 'none';
     if (summary) {
       summary.textContent = indices.length > 0
-      ? ('Detected GPUs: ' + indices.map(function(idx) { return 'GPU ' + idx; }).join(', '))
+        ? ('Detected GPUs: ' + indices.map(function(idx) { return metricsGPUDisplayLabel(idx, names); }).join(', '))
         : 'No GPUs detected in live metrics.';
     }
-  const nextKey = indices.join(',');
+    const nextKey = indices.join(',') + '|' + indices.map(function(idx) { return names[idx] || ''; }).join(',');
     if (nextKey !== gpuChartKey) {
-    renderGPUOverviewCards(indices);
+      renderGPUOverviewCards(indices, names);
       gpuChartKey = nextKey;
     }
     applyGPUChartMode();
+  });
 }
 
 function loadMetricsLayout() {
@@ -1029,17 +1062,17 @@ func renderValidate(opts HandlerOptions) string {
 		`</div>
 <div style="height:1px;background:var(--border);margin:16px 0"></div>
 <div class="grid3">
-` + renderSATCard("nvidia", "NVIDIA GPU", "runSAT('nvidia')", "", renderValidateCardBody(
+` + renderSATCard("nvidia", "NVIDIA GPU", "runNvidiaValidateSet('nvidia')", "", renderValidateCardBody(
 		inv.NVIDIA,
 		`Runs NVIDIA diagnostics and board inventory checks.`,
 		`<code>nvidia-smi</code>, <code>dmidecode</code>, <code>dcgmi diag</code>`,
-		`Diag level is taken from Validate Profile.`,
+		`Runs one GPU at a time. Diag level is taken from Validate Profile.`,
 	)) +
-		renderSATCard("nvidia-targeted-stress", "NVIDIA GPU Targeted Stress", "runSAT('nvidia-targeted-stress')", "", renderValidateCardBody(
+		renderSATCard("nvidia-targeted-stress", "NVIDIA GPU Targeted Stress", "runNvidiaValidateSet('nvidia-targeted-stress')", "", renderValidateCardBody(
 			inv.NVIDIA,
 			`Runs a controlled NVIDIA DCGM load in Validate to check stability under moderate stress.`,
 			`<code>dcgmi diag targeted_stress</code>`,
-			`Uses the fixed DCGM targeted stress recipe.`,
+			`Runs one GPU at a time with the fixed DCGM targeted stress recipe.`,
 		)) +
 		`</div>
 <div class="grid3" style="margin-top:16px">
@@ -1077,17 +1110,37 @@ function satCPUDurationFromDiagLevel() {
 function satLabels() {
   return {nvidia:'Validate GPU', 'nvidia-targeted-stress':'NVIDIA Targeted Stress Validate (dcgmi diag targeted_stress)', memory:'Validate Memory', storage:'Validate Storage', cpu:'Validate CPU', amd:'Validate AMD GPU', 'amd-mem':'AMD GPU MEM Integrity', 'amd-bandwidth':'AMD GPU MEM Bandwidth'};
 }
-function satRequestBody(target) {
+let satNvidiaGPUsPromise = null;
+function loadSatNvidiaGPUs() {
+  if (!satNvidiaGPUsPromise) {
+    satNvidiaGPUsPromise = fetch('/api/gpu/nvidia')
+      .then(r => {
+        if (!r.ok) throw new Error('Failed to load NVIDIA GPUs.');
+        return r.json();
+      })
+      .then(list => Array.isArray(list) ? list : []);
+  }
+  return satNvidiaGPUsPromise;
+}
+function satGPUDisplayName(gpu) {
+  const idx = (gpu && Number.isFinite(Number(gpu.index))) ? Number(gpu.index) : 0;
+  const name = gpu && gpu.name ? gpu.name : ('GPU ' + idx);
+  return 'GPU ' + idx + ' — ' + name;
+}
+function satRequestBody(target, overrides) {
   const body = {};
   const labels = satLabels();
   body.display_name = labels[target] || ('Validate ' + target);
   if (target === 'nvidia') body.diag_level = satDiagLevel();
   if (target === 'nvidia-targeted-stress') body.duration = 300;
   if (target === 'cpu') body.duration = satCPUDurationFromDiagLevel();
+  if (overrides) {
+    Object.keys(overrides).forEach(key => { body[key] = overrides[key]; });
+  }
   return body;
 }
-function enqueueSATTarget(target) {
+function enqueueSATTarget(target, overrides) {
-  return fetch('/api/sat/'+target+'/run', {method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify(satRequestBody(target))})
+  return fetch('/api/sat/'+target+'/run', {method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify(satRequestBody(target, overrides))})
     .then(r => r.json());
 }
 function selectedAMDValidateTargets() {
@@ -1101,12 +1154,15 @@ function selectedAMDValidateTargets() {
   return targets;
 }
 function runSAT(target) {
+  return runSATWithOverrides(target, null);
+}
+function runSATWithOverrides(target, overrides) {
   if (satES) { satES.close(); satES = null; }
   document.getElementById('sat-output').style.display='block';
   document.getElementById('sat-title').textContent = '— ' + target;
   const term = document.getElementById('sat-terminal');
   term.textContent = 'Enqueuing ' + target + ' test...\n';
-  return enqueueSATTarget(target)
+  return enqueueSATTarget(target, overrides)
     .then(d => {
       term.textContent += 'Task ' + d.task_id + ' queued. Streaming log...\n';
       satES = new EventSource('/api/tasks/'+d.task_id+'/stream');
@@ -1114,6 +1170,55 @@ function runSAT(target) {
       satES.addEventListener('done', e => { satES.close(); satES=null; term.textContent += (e.data ? '\nERROR: '+e.data : '\nCompleted.')+'\n'; });
     });
 }
+function expandSATTarget(target) {
+  if (target !== 'nvidia' && target !== 'nvidia-targeted-stress') {
+    return Promise.resolve([{target: target}]);
+  }
+  return loadSatNvidiaGPUs().then(gpus => gpus.map(gpu => ({
+    target: target,
+    overrides: {
+      gpu_indices: [Number(gpu.index)],
+      display_name: (satLabels()[target] || ('Validate ' + target)) + ' (' + satGPUDisplayName(gpu) + ')'
+    },
+    label: satGPUDisplayName(gpu)
+  })));
+}
+function runNvidiaValidateSet(target) {
+  return loadSatNvidiaGPUs().then(gpus => {
+    if (!gpus.length) return;
+    if (gpus.length === 1) {
+      const gpu = gpus[0];
+      return runSATWithOverrides(target, {
+        gpu_indices: [Number(gpu.index)],
+        display_name: (satLabels()[target] || ('Validate ' + target)) + ' (' + satGPUDisplayName(gpu) + ')'
+      });
+    }
+    if (satES) { satES.close(); satES = null; }
+    document.getElementById('sat-output').style.display='block';
+    document.getElementById('sat-title').textContent = '— ' + target;
+    const term = document.getElementById('sat-terminal');
+    term.textContent = 'Enqueuing ' + target + ' tests one GPU at a time...\n';
+    const labelBase = satLabels()[target] || ('Validate ' + target);
+    const enqueueNext = (idx) => {
+      if (idx >= gpus.length) return;
+      const gpu = gpus[idx];
+      const gpuLabel = satGPUDisplayName(gpu);
+      enqueueSATTarget(target, {
+        gpu_indices: [Number(gpu.index)],
+        display_name: labelBase + ' (' + gpuLabel + ')'
+      }).then(d => {
+        term.textContent += 'Task ' + d.task_id + ' queued for ' + gpuLabel + '.\n';
+        if (idx === gpus.length - 1) {
+          satES = new EventSource('/api/tasks/' + d.task_id + '/stream');
+          satES.onmessage = e => { term.textContent += e.data+'\n'; term.scrollTop=term.scrollHeight; };
+          satES.addEventListener('done', e => { satES.close(); satES=null; term.textContent += (e.data ? '\nERROR: '+e.data : '\nCompleted.')+'\n'; });
+        }
+        enqueueNext(idx + 1);
+      });
+    };
+    enqueueNext(0);
+  });
+}
 function runAMDValidateSet() {
   const targets = selectedAMDValidateTargets();
   if (!targets.length) return;
@@ -1142,25 +1247,38 @@ function runAMDValidateSet() {
 }
 function runAllSAT() {
   const cycles = Math.max(1, parseInt(document.getElementById('sat-cycles').value)||1);
-  const targets = ['nvidia','nvidia-targeted-stress','memory','storage','cpu'].concat(selectedAMDValidateTargets());
-  const total = targets.length * cycles;
-  let enqueued = 0;
   const status = document.getElementById('sat-all-status');
   status.textContent = 'Enqueuing...';
-  const enqueueNext = (cycle, idx) => {
+  const baseTargets = ['nvidia','nvidia-targeted-stress','memory','storage','cpu'].concat(selectedAMDValidateTargets());
-    if (cycle >= cycles) { status.textContent = 'Enqueued '+total+' tasks.'; return; }
+  const activeTargets = baseTargets.filter(target => {
-    if (idx >= targets.length) { enqueueNext(cycle+1, 0); return; }
-    const target = targets[idx];
     const btn = document.getElementById('sat-btn-' + target);
-    if (btn && btn.disabled) { enqueueNext(cycle, idx+1); return; }
+    return !(btn && btn.disabled);
-    enqueueSATTarget(target)
+  });
-      .then(()=>{
+  Promise.all(activeTargets.map(expandSATTarget)).then(groups => {
+    const expanded = [];
+    for (let cycle = 0; cycle < cycles; cycle++) {
+      groups.forEach(group => group.forEach(item => expanded.push(item)));
+    }
+    const total = expanded.length;
+    let enqueued = 0;
+    if (!total) {
+      status.textContent = 'No tasks selected.';
+      return;
+    }
+    const enqueueNext = (idx) => {
+      if (idx >= expanded.length) { status.textContent = 'Enqueued ' + total + ' tasks.'; return; }
+      const item = expanded[idx];
+      enqueueSATTarget(item.target, item.overrides)
+        .then(() => {
           enqueued++;
-        status.textContent = 'Enqueued '+enqueued+'/'+total+'...';
+          status.textContent = 'Enqueued ' + enqueued + '/' + total + '...';
-        enqueueNext(cycle, idx+1);
+          enqueueNext(idx + 1);
         });
     };
-  enqueueNext(0, 0);
+    enqueueNext(0);
+  }).catch(err => {
+    status.textContent = 'Error: ' + err.message;
+  });
 }
 </script>
 <script>
@@ -2179,29 +2297,57 @@ function usbRefresh() {
           '<td>'+label+'</td>' +
           '<td style="font-size:12px;color:var(--muted)">'+model+'</td>' +
           '<td style="white-space:nowrap">' +
-            '<button class="btn btn-sm btn-primary" onclick="usbExport(\'audit\','+JSON.stringify(t)+')">Audit JSON</button> ' +
+            '<button class="btn btn-sm btn-primary" onclick="usbExport(\'audit\','+JSON.stringify(t)+',this)">Audit JSON</button> ' +
-            '<button class="btn btn-sm btn-secondary" onclick="usbExport(\'bundle\','+JSON.stringify(t)+')">Support Bundle</button>' +
+            '<button class="btn btn-sm btn-secondary" onclick="usbExport(\'bundle\','+JSON.stringify(t)+',this)">Support Bundle</button>' +
+            '<div class="usb-row-msg" style="margin-top:6px;font-size:12px;color:var(--muted)"></div>' +
           '</td></tr>';
       }).join('') + '</table>';
   }).catch(e => {
     document.getElementById('usb-status').textContent = 'Error: ' + e;
   });
 }
-window.usbExport = function(type, target) {
+window.usbExport = function(type, target, btn) {
   const msg = document.getElementById('usb-msg');
+  const row = btn ? btn.closest('td') : null;
+  const rowMsg = row ? row.querySelector('.usb-row-msg') : null;
+  const originalText = btn ? btn.textContent : '';
+  if (btn) {
+    btn.disabled = true;
+    btn.textContent = 'Exporting...';
+  }
+  if (rowMsg) {
+    rowMsg.style.color = 'var(--muted)';
+    rowMsg.textContent = 'Working...';
+  }
   msg.style.color = 'var(--muted)';
-  msg.textContent = 'Exporting to ' + (target.device||'') + '...';
+  msg.textContent = 'Exporting ' + (type === 'bundle' ? 'support bundle' : 'audit JSON') + ' to ' + (target.device||'') + '...';
   fetch('/api/export/usb/'+type, {
     method: 'POST',
     headers: {'Content-Type':'application/json'},
     body: JSON.stringify(target)
-  }).then(r=>r.json()).then(d => {
+  }).then(async r => {
-    if (d.error) { msg.style.color='var(--err,red)'; msg.textContent = 'Error: '+d.error; return; }
+    const d = await r.json();
+    if (!r.ok) throw new Error(d.error || ('HTTP ' + r.status));
+    return d;
+  }).then(d => {
     msg.style.color = 'var(--ok,green)';
     msg.textContent = d.message || 'Done.';
+    if (rowMsg) {
+      rowMsg.style.color = 'var(--ok,green)';
+      rowMsg.textContent = d.message || 'Done.';
+    }
   }).catch(e => {
     msg.style.color = 'var(--err,red)';
     msg.textContent = 'Error: '+e;
+    if (rowMsg) {
+      rowMsg.style.color = 'var(--err,red)';
+      rowMsg.textContent = 'Error: ' + e;
+    }
+  }).finally(() => {
+    if (btn) {
+      btn.disabled = false;
+      btn.textContent = originalText;
+    }
   });
 };
 window.usbRefresh = usbRefresh;

audit/internal/webui/server.go

@@ -703,7 +703,7 @@ func chartDataFromSamples(path string, samples []platform.LiveMetricSample) ([][
 		}
 		switch sub {
 		case "load":
-			title = fmt.Sprintf("GPU %d Load", idx)
+			title = gpuDisplayLabel(idx) + " Load"
 			util := gpuDatasetByIndex(samples, idx, func(g platform.GPUMetricRow) float64 { return g.UsagePct })
 			mem := gpuDatasetByIndex(samples, idx, func(g platform.GPUMetricRow) float64 { return g.MemUsagePct })
 			if util == nil && mem == nil {
@@ -714,7 +714,7 @@ func chartDataFromSamples(path string, samples []platform.LiveMetricSample) ([][
 			yMin = floatPtr(0)
 			yMax = floatPtr(100)
 		case "temp":
-			title = fmt.Sprintf("GPU %d Temperature", idx)
+			title = gpuDisplayLabel(idx) + " Temperature"
 			temp := gpuDatasetByIndex(samples, idx, func(g platform.GPUMetricRow) float64 { return g.TempC })
 			if temp == nil {
 				return nil, nil, nil, "", nil, nil, false
@@ -724,7 +724,7 @@ func chartDataFromSamples(path string, samples []platform.LiveMetricSample) ([][
 			yMin = floatPtr(0)
 			yMax = autoMax120(temp)
 		case "clock":
-			title = fmt.Sprintf("GPU %d Core Clock", idx)
+			title = gpuDisplayLabel(idx) + " Core Clock"
 			clock := gpuDatasetByIndex(samples, idx, func(g platform.GPUMetricRow) float64 { return g.ClockMHz })
 			if clock == nil {
 				return nil, nil, nil, "", nil, nil, false
@@ -733,7 +733,7 @@ func chartDataFromSamples(path string, samples []platform.LiveMetricSample) ([][
 			names = []string{"Core Clock MHz"}
 			yMin, yMax = autoBounds120(clock)
 		case "memclock":
-			title = fmt.Sprintf("GPU %d Memory Clock", idx)
+			title = gpuDisplayLabel(idx) + " Memory Clock"
 			clock := gpuDatasetByIndex(samples, idx, func(g platform.GPUMetricRow) float64 { return g.MemClockMHz })
 			if clock == nil {
 				return nil, nil, nil, "", nil, nil, false
@@ -742,7 +742,7 @@ func chartDataFromSamples(path string, samples []platform.LiveMetricSample) ([][
 			names = []string{"Memory Clock MHz"}
 			yMin, yMax = autoBounds120(clock)
 		default:
-			title = fmt.Sprintf("GPU %d Power", idx)
+			title = gpuDisplayLabel(idx) + " Power"
 			power := gpuDatasetByIndex(samples, idx, func(g platform.GPUMetricRow) float64 { return g.PowerW })
 			if power == nil {
 				return nil, nil, nil, "", nil, nil, false
@@ -871,7 +871,7 @@ func gpuDatasets(samples []platform.LiveMetricSample, pick func(platform.GPUMetr
 			continue
 		}
 		datasets = append(datasets, ds)
-		names = append(names, fmt.Sprintf("GPU %d", idx))
+		names = append(names, gpuDisplayLabel(idx))
 	}
 	return datasets, names
 }

audit/internal/webui/server_test.go

@@ -259,7 +259,7 @@ func TestRenderMetricsUsesBufferedChartRefresh(t *testing.T) {
 	if !strings.Contains(body, `/api/metrics/chart/gpu-all-memclock.svg`) {
 		t.Fatalf("metrics page should include GPU memory clock chart: %s", body)
 	}
-	if !strings.Contains(body, `renderGPUOverviewCards(indices)`) {
+	if !strings.Contains(body, `renderGPUOverviewCards(indices, names)`) {
 		t.Fatalf("metrics page should build per-GPU chart cards dynamically: %s", body)
 	}
 }