Validate EdgeGenBench on an Android 16 KB runtime

README.md

@@ -60,6 +60,10 @@ Repeated physical-device reference runs can be captured with
 post-run memory and thermal snapshots from sampled peaks and power measurements.
 The first retained 10-run capture is summarized in the
 [Samsung SM-A356E repeated-device report](reports/android_sm_a356e_reference_10_run_v0_1_4.md).
+The APK/JNI reference path was also executed for 10 cold launches on an Android
+15 ARM64 emulator whose runtime reported `PAGE_SIZE=16384`; the raw evidence and
+claim boundaries are summarized in the
+[Android 16 KB runtime report](reports/android_16kb_emulator_reference_v0_1_7.md).
 Every successful CI run also assembles a versioned end-to-end release-evidence
 bundle containing native baseline/fused benchmark JSON, the verified APK, the
 16 KiB alignment report, a Git revision, and SHA-256 checksums. The acceptance

docs/end_to_end_acceptance.md

@@ -44,6 +44,11 @@ for reviewers.
   checks;
 - all retained files are bound to a Git revision with SHA-256 digests.
 
+The tracked Android 16 KB evidence separately demonstrates that the v0.1.7
+reference APK/JNI path launches and completes repeated benchmarks on an API 35
+ARM64 emulator reporting `PAGE_SIZE=16384`. It is runtime-compatibility proof,
+not physical-device performance, QNN placement, thermal, or power evidence.
+
 ## What requires a physical device
 
 CI does not claim NPU placement, thermals, or power. Attach physical-device

reports/android_16kb_emulator_reference_v0_1_7.md

@@ -0,0 +1,67 @@
+# Android 16 KB runtime evidence: API 35 ARM64 emulator
+
+Captured on 2026-08-27 from EdgeGenBench Android v0.1.7 (version code 8)
+using `scripts/profile_android_reference.sh` for 10 automated cold launches.
+
+## Provenance and scope
+
+| Field | Observed value |
+|---|---|
+| Environment | Google Android Emulator `sdk_gphone16k_arm64` |
+| Android / SDK | Android 15 / SDK 35 |
+| ABI | `arm64-v8a` |
+| Runtime page size | **16,384 bytes** |
+| App version | 0.1.7 (code 8) |
+| Backend | Deterministic reference backend, **not QNN** |
+| QNN/NPU placement | Not tested |
+| Power | Not measured |
+
+The runtime page size was read from the booted environment with
+`adb shell getconf PAGE_SIZE`. Every retained machine-readable benchmark result
+also records `runtime_page_size_bytes=16384`. Before installation, Android SDK
+`zipalign -c -P 16 -v 4` passed and all `PT_LOAD` segments in both packaged
+native libraries reported `0x4000` alignment.
+
+This closes the Android 16 KB **runtime compatibility** gap for the reference
+APK/JNI path. An emulator is not physical-device performance evidence, and
+these timings must not be compared with the Samsung or Qualcomm measurements.
+
+## Ten-run results
+
+Each outer run force-stopped and cold-launched the activity. The native
+benchmark then performed 100 measured iterations.
+
+| Metric | Mean | Median | Minimum | Maximum |
+|---|---:|---:|---:|---:|
+| Native cold latency (ms) | 0.022621 | 0.014333 | 0.011500 | 0.060667 |
+| Native warm mean (ms) | 0.002608 | 0.002440 | 0.002259 | 0.003924 |
+| Native warm p95 (ms) | 0.003333 | 0.002667 | 0.002458 | 0.006250 |
+| Baseline preprocessing (ms) | 26.361593 | 23.912975 | 21.260857 | 38.929105 |
+| Fused preprocessing (ms) | 12.570465 | 12.233062 | 11.625028 | 14.820786 |
+| Preprocessing speedup | 2.092613x | 1.951007x | 1.772588x | 2.852528x |
+| Android launch total (ms) | 4032.9 | 3948.0 | 3190 | 5258 |
+| Post-run PSS (KiB) | 60,623 | 60,698 | 60,233 | 60,853 |
+| Post-run RSS (KiB) | 157,038 | 157,096 | 156,608 | 157,232 |
+
+All ten runs reported zero preprocessing drift and zero downstream output
+drift. PSS and RSS are post-run process snapshots, not sampled peaks.
+
+## Thermal and power boundaries
+
+The emulator reported thermal status 0 and a constant synthetic test sensor.
+Those values are emulator diagnostics, not physical thermal measurements.
+Power remains `not measured`; no energy or power-savings claim is made.
+
+## Retained evidence
+
+The complete capture is stored under
+`reports/device/android-16kb-api35-reference-10-runs/` and includes:
+
+- device/app identity and the observed runtime page size;
+- ten activity-start, logcat, memory, and thermal records;
+- the aggregate latency/memory CSV;
+- pre/post thermal snapshots and the final screenshot;
+- explicit reference-backend, QNN, memory, thermal, and power claim boundaries.
+
+The remaining hardware-only gaps are an end-to-end QNN APK run on a supported
+Snapdragon device and a calibrated physical power measurement.

reports/device/android-16kb-api35-reference-10-runs/device-report.txt

@@ -0,0 +1,9 @@
+captured_at=2026-08-27T20:01:33Z
+manufacturer=Google
+model=sdk_gphone16k_arm64
+android=15
+sdk=35
+abi=arm64-v8a
+page_size=16384
+    versionCode=8 minSdk=28 targetSdk=35
+    versionName=0.1.7

reports/device/android-16kb-api35-reference-10-runs/latency-memory.csv

@@ -0,0 +1,11 @@
+run,cold_ms,warm_mean_ms,warm_p95_ms,baseline_preprocess_mean_ms,fused_preprocess_mean_ms,preprocess_speedup_x,preprocess_max_abs_drift,output_max_abs_drift,launch_total_ms,total_pss_kib,total_rss_kib
+1,0.033250,0.002658,0.002667,38.929105,13.647231,2.852528,0.000000,0.000000,4575,60548,156992
+2,0.013958,0.002545,0.002750,21.260857,11.686140,1.819322,0.000000,0.000000,4036,60695,157104
+3,0.011500,0.002315,0.002584,23.230263,12.460185,1.864359,0.000000,0.000000,3190,60247,156688
+4,0.020083,0.002310,0.002667,25.604844,12.850200,1.992564,0.000000,0.000000,5258,60701,157088
+5,0.012625,0.002312,0.002583,23.244588,12.173451,1.909449,0.000000,0.000000,3484,60717,157168
+6,0.060667,0.002259,0.002458,30.244593,14.820786,2.040688,0.000000,0.000000,4001,60788,157232
+7,0.035708,0.003924,0.006250,21.789849,12.292673,1.772588,0.000000,0.000000,4840,60233,156608
+8,0.014709,0.002855,0.006041,21.970452,12.135276,1.810462,0.000000,0.000000,3804,60853,157232
+9,0.011625,0.002335,0.002708,32.760015,11.625028,2.818059,0.000000,0.000000,3895,60642,157056
+10,0.012084,0.002570,0.002625,24.581362,12.013676,2.046115,0.000000,0.000000,3246,60807,157216

reports/device/android-16kb-api35-reference-10-runs/measurement-status.txt

@@ -0,0 +1,5 @@
+backend=reference
+qnn-npu-placement=not-tested
+power=not-measured
+memory=post-run-snapshots-not-sampled-peaks
+thermal=platform-sensor-snapshots-not-calibrated-power

reports/device/android-16kb-api35-reference-10-runs/runs/run-001/activity-start.txt

@@ -0,0 +1,7 @@
+Starting: Intent { cmp=dev.edgegenbench/.MainActivity (has extras) }
+Status: ok
+LaunchState: COLD
+Activity: dev.edgegenbench/.MainActivity
+TotalTime: 4575
+WaitTime: 4837
+Complete

reports/device/android-16kb-api35-reference-10-runs/runs/run-001/logcat.txt

@@ -0,0 +1,20 @@
+--------- beginning of main
+08-27 16:01:35.017  7683  7683 I EdgeGenBench: MainActivity.onCreate: rendering high-contrast benchmark UI
+08-27 16:01:36.400  7683  7683 I EdgeGenBench: MainActivity.onCreate: content view attached
+08-27 16:01:36.401  7683  7683 I EdgeGenBench: MainActivity.onCreate: auto_run requested
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: backend=reference
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: CPU fallback=false
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: cold_ms=0.033250
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: warm_mean_ms=0.002658
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: warm_p95_ms=0.002667
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: runs=100
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: baseline_preprocess_mean_ms=38.929105
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: fused_preprocess_mean_ms=13.647231
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: preprocess_elements=262144
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: preprocess_speedup_x=2.852528
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: preprocess_max_abs_drift=0.000000
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: output_max_abs_drift=0.000000
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: output=0.156160
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: power=not measured
+08-27 16:01:44.154  7683  7705 I EdgeGenBench: placement={"backend":"reference","operators":{"ReferenceLinear":1},"cpu_fallback":false,"hardware_measurement":false}
+08-27 16:01:44.221  7683  7683 I EdgeGenBench: benchmark_json={"schema_version":1,"backend":"reference","cpu_fallback":false,"cold_ms":0.03325,"warm_mean_ms":0.00265791,"warm_p95_ms":0.002667,"runs":100,"baseline_preprocess_mean_ms":38.9291046,"fused_preprocess_mean_ms":13.6472313,"preprocess_elements":262144,"preprocess_speedup_x":2.852527648,"preprocess_max_abs_drift":0,"output_max_abs_drift":0,"output":0.156159997,"runtime_page_size_bytes":16384,"power":"not measured","captured_at_epoch_ms":1787860904166}

reports/device/android-16kb-api35-reference-10-runs/runs/run-001/meminfo.txt

@@ -0,0 +1,50 @@
+Applications Memory Usage (in Kilobytes):
+Uptime: 16882397 Realtime: 16882397
+
+** MEMINFO in pid 7683 [dev.edgegenbench] **
+                   Pss  Private  Private  SwapPss      Rss     Heap     Heap     Heap
+                 Total    Dirty    Clean    Dirty    Total     Size    Alloc     Free
+                ------   ------   ------   ------   ------   ------   ------   ------
+  Native Heap    17258    17216        0       77    18080    24384    17314     1938
+  Dalvik Heap     4283     4160       32      333     5168     6687     3344     3343
+ Dalvik Other     6454     2464        0      169    10688                           
+        Stack      928      928        0        0      928                           
+       Ashmem       65        0        0        0      608                           
+    Other dev       80        0       32        0      688                           
+     .so mmap     4299      528      384       21    34032                           
+    .jar mmap     3489        0      400        0    40352                           
+    .apk mmap     8869       64     8560        0    10224                           
+    .ttf mmap      266        0        0        0     1024                           
+    .dex mmap       22        0        0        0      912                           
+    .oat mmap       69        0        0        0     1664                           
+    .art mmap    10466     9312      512      113    25808                           
+   Other mmap     2143       16        0        0     5152                           
+      Unknown     1130     1024       80       14     1664                           
+        TOTAL    60548    35712    10000      727   156992    31071    20658     5281
+
+ App Summary
+                       Pss(KB)                        Rss(KB)
+                        ------                         ------
+           Java Heap:    13984                          30976
+         Native Heap:    17216                          18080
+                Code:     9968                          96208
+               Stack:      928                            928
+            Graphics:        0                              0
+       Private Other:     3616
+              System:    14836
+             Unknown:                                   10800
+
+           TOTAL PSS:    60548            TOTAL RSS:   156992       TOTAL SWAP PSS:      727
+
+ Objects
+               Views:       13         ViewRootImpl:        1
+         AppContexts:        7           Activities:        1
+              Assets:       20        AssetManagers:        0
+       Local Binders:       14        Proxy Binders:       55
+       Parcel memory:        5         Parcel count:       20
+    Death Recipients:        0             WebViews:        0
+
+ SQL
+         MEMORY_USED:        0
+  PAGECACHE_OVERFLOW:        0          MALLOC_SIZE:        0
+

reports/device/android-16kb-api35-reference-10-runs/runs/run-001/thermal.txt

@@ -0,0 +1,23 @@
+IsStatusOverride: false
+ThermalEventListeners:
+	callbacks: 5
+	killed: false
+	broadcasts count: -1
+ThermalStatusListeners:
+	callbacks: 3
+	killed: false
+	broadcasts count: -1
+Thermal Status: 0
+Cached temperatures:
+	Temperature{mValue=30.8, mType=3, mName=test temperature sensor, mStatus=0}
+HAL Ready: true
+HAL connection:
+	ThermalHAL 2.0 connected: yes
+Current temperatures from HAL:
+	Temperature{mValue=30.8, mType=3, mName=test temperature sensor, mStatus=0}
+Current cooling devices from HAL:
+	CoolingDevice{mValue=100, mType=0, mName=test cooling device}
+Temperature static thresholds from HAL:
+	TemperatureThreshold{mType=3, mName=test temperature sensor, mHotThrottlingThresholds=[NaN, NaN, NaN, 48.0, NaN, NaN, 60.0], mColdThrottlingThresholds=[NaN, NaN, NaN, NaN, NaN, NaN, NaN]}
+Temperature headroom thresholds:
+[NaN, NaN, NaN, NaN, NaN, NaN, 1.4]

reports/device/android-16kb-api35-reference-10-runs/runs/run-002/activity-start.txt

@@ -0,0 +1,7 @@
+Starting: Intent { cmp=dev.edgegenbench/.MainActivity (has extras) }
+Status: ok
+LaunchState: COLD
+Activity: dev.edgegenbench/.MainActivity
+TotalTime: 4036
+WaitTime: 4042
+Complete

reports/device/android-16kb-api35-reference-10-runs/runs/run-002/logcat.txt

@@ -0,0 +1,20 @@
+--------- beginning of main
+08-27 16:01:48.212  7797  7797 I EdgeGenBench: MainActivity.onCreate: rendering high-contrast benchmark UI
+08-27 16:01:49.011  7797  7797 I EdgeGenBench: MainActivity.onCreate: content view attached
+08-27 16:01:49.012  7797  7797 I EdgeGenBench: MainActivity.onCreate: auto_run requested
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: backend=reference
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: CPU fallback=false
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: cold_ms=0.013958
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: warm_mean_ms=0.002545
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: warm_p95_ms=0.002750
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: runs=100
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: baseline_preprocess_mean_ms=21.260857
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: fused_preprocess_mean_ms=11.686140
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: preprocess_elements=262144
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: preprocess_speedup_x=1.819322
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: preprocess_max_abs_drift=0.000000
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: output_max_abs_drift=0.000000
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: output=0.156160
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: power=not measured
+08-27 16:01:54.321  7797  7814 I EdgeGenBench: placement={"backend":"reference","operators":{"ReferenceLinear":1},"cpu_fallback":false,"hardware_measurement":false}
+08-27 16:01:54.375  7797  7797 I EdgeGenBench: benchmark_json={"schema_version":1,"backend":"reference","cpu_fallback":false,"cold_ms":0.013958,"warm_mean_ms":0.00254542,"warm_p95_ms":0.00275,"runs":100,"baseline_preprocess_mean_ms":21.26085666,"fused_preprocess_mean_ms":11.68614039,"preprocess_elements":262144,"preprocess_speedup_x":1.819322373,"preprocess_max_abs_drift":0,"output_max_abs_drift":0,"output":0.156159997,"runtime_page_size_bytes":16384,"power":"not measured","captured_at_epoch_ms":1787860914336}

reports/device/android-16kb-api35-reference-10-runs/runs/run-002/meminfo.txt

@@ -0,0 +1,50 @@
+Applications Memory Usage (in Kilobytes):
+Uptime: 16892536 Realtime: 16892536
+
+** MEMINFO in pid 7797 [dev.edgegenbench] **
+                   Pss  Private  Private  SwapPss      Rss     Heap     Heap     Heap
+                 Total    Dirty    Clean    Dirty    Total     Size    Alloc     Free
+                ------   ------   ------   ------   ------   ------   ------   ------
+  Native Heap    17258    17216        0       78    18080    24384    17303     2055
+  Dalvik Heap     4267     4144       32      333     5152     6687     3344     3343
+ Dalvik Other     6726     2752        0      169    10944                           
+        Stack      880      880        0        0      880                           
+       Ashmem       65        0        0        0      608                           
+    Other dev       80        0       32        0      688                           
+     .so mmap     4291      528      384       21    34016                           
+    .jar mmap     3488        0      400        0    40352                           
+    .apk mmap     8864       64     8560        0    10208                           
+    .ttf mmap      266        0        0        0     1024                           
+    .dex mmap       22        0        0        0      912                           
+    .oat mmap       69        0        0        0     1664                           
+    .art mmap    10466     9312      512      113    25808                           
+   Other mmap     2143       16        0        0     5152                           
+      Unknown     1082     1024       32       14     1616                           
+        TOTAL    60695    35936     9952      728   157104    31071    20647     5398
+
+ App Summary
+                       Pss(KB)                        Rss(KB)
+                        ------                         ------
+           Java Heap:    13968                          30960
+         Native Heap:    17216                          18080
+                Code:     9984                          96160
+               Stack:      880                            880
+            Graphics:        0                              0
+       Private Other:     3840
+              System:    14807
+             Unknown:                                   11024
+
+           TOTAL PSS:    60695            TOTAL RSS:   157104       TOTAL SWAP PSS:      728
+
+ Objects
+               Views:       13         ViewRootImpl:        1
+         AppContexts:        7           Activities:        1
+              Assets:       20        AssetManagers:        0
+       Local Binders:       14        Proxy Binders:       55
+       Parcel memory:        4         Parcel count:       16
+    Death Recipients:        0             WebViews:        0
+
+ SQL
+         MEMORY_USED:        0
+  PAGECACHE_OVERFLOW:        0          MALLOC_SIZE:        0
+

reports/device/android-16kb-api35-reference-10-runs/runs/run-002/thermal.txt

@@ -0,0 +1,23 @@
+IsStatusOverride: false
+ThermalEventListeners:
+	callbacks: 5
+	killed: false
+	broadcasts count: -1
+ThermalStatusListeners:
+	callbacks: 3
+	killed: false
+	broadcasts count: -1
+Thermal Status: 0
+Cached temperatures:
+	Temperature{mValue=30.8, mType=3, mName=test temperature sensor, mStatus=0}
+HAL Ready: true
+HAL connection:
+	ThermalHAL 2.0 connected: yes
+Current temperatures from HAL:
+	Temperature{mValue=30.8, mType=3, mName=test temperature sensor, mStatus=0}
+Current cooling devices from HAL:
+	CoolingDevice{mValue=100, mType=0, mName=test cooling device}
+Temperature static thresholds from HAL:
+	TemperatureThreshold{mType=3, mName=test temperature sensor, mHotThrottlingThresholds=[NaN, NaN, NaN, 48.0, NaN, NaN, 60.0], mColdThrottlingThresholds=[NaN, NaN, NaN, NaN, NaN, NaN, NaN]}
+Temperature headroom thresholds:
+[NaN, NaN, NaN, NaN, NaN, NaN, 1.4]

reports/device/android-16kb-api35-reference-10-runs/runs/run-003/activity-start.txt

@@ -0,0 +1,7 @@
+Starting: Intent { cmp=dev.edgegenbench/.MainActivity (has extras) }
+Status: ok
+LaunchState: COLD
+Activity: dev.edgegenbench/.MainActivity
+TotalTime: 3190
+WaitTime: 3454
+Complete

reports/device/android-16kb-api35-reference-10-runs/runs/run-003/logcat.txt

@@ -0,0 +1,20 @@
+--------- beginning of main
+08-27 16:01:57.633  7896  7896 I EdgeGenBench: MainActivity.onCreate: rendering high-contrast benchmark UI
+08-27 16:01:58.442  7896  7896 I EdgeGenBench: MainActivity.onCreate: content view attached
+08-27 16:01:58.442  7896  7896 I EdgeGenBench: MainActivity.onCreate: auto_run requested
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: backend=reference
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: CPU fallback=false
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: cold_ms=0.011500
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: warm_mean_ms=0.002315
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: warm_p95_ms=0.002584
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: runs=100
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: baseline_preprocess_mean_ms=23.230263
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: fused_preprocess_mean_ms=12.460185
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: preprocess_elements=262144
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: preprocess_speedup_x=1.864359
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: preprocess_max_abs_drift=0.000000
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: output_max_abs_drift=0.000000
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: output=0.156160
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: power=not measured
+08-27 16:02:03.924  7896  7914 I EdgeGenBench: placement={"backend":"reference","operators":{"ReferenceLinear":1},"cpu_fallback":false,"hardware_measurement":false}
+08-27 16:02:03.982  7896  7896 I EdgeGenBench: benchmark_json={"schema_version":1,"backend":"reference","cpu_fallback":false,"cold_ms":0.0115,"warm_mean_ms":0.00231455,"warm_p95_ms":0.002584,"runs":100,"baseline_preprocess_mean_ms":23.23026294,"fused_preprocess_mean_ms":12.46018544,"preprocess_elements":262144,"preprocess_speedup_x":1.864359327,"preprocess_max_abs_drift":0,"output_max_abs_drift":0,"output":0.156159997,"runtime_page_size_bytes":16384,"power":"not measured","captured_at_epoch_ms":1787860923937}