# Qwen Flash-Next: single-Spark memory and cold context

The v2.4.0 promotion arm serves the pinned GDN-MSE checkpoint, with an extra MXFP8 prefill shard. NVFP4 expert weights, MXFP8 paths and a refitted four-draft MTP head are separate components. The experimental image tag is retained; the later release-image digest does not prove the exact cold-test image digest. Repository release names are specific to this one-Spark recipe.

- Type: Performance report
- Evidence: source_reported; site reproduced: false
- Model family: Qwen
- Model: ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE
- Original author: ursuciprian
- Original project: https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark
- Pinned document: https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/README.md
- Source revision: 348ede7e28a01f6aa6b501aaf2392d20a286a012
- Source commit time (not experiment date): 2026-10-16T16:43:24Z
- Checked: 2026-10-18
- Experiment date: 2026-10-16
- Runtime topics: vLLM
- Hardware topics: spark, nvidia
- Reported setup: {"system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe", "node_count": 1, "parallelism": "TP1", "kv_dtype": "fp8", "context_limit_tokens": 262144, "experiment_date": "2026-10-16"}
- Performance figures: attributed selections with per-point conditions; no cross-source ranking

## Conditions

Unknown is null. Recipe options are not measured benchmark settings.

```json
{
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    "weight_hash": null,
    "runtime_execution_revision": null,
    "input_tokens": null,
    "output_tokens": null,
    "concurrency": null,
    "cache_state": null,
    "quantization": null,
    "speculative_decoding": null,
    "temperature": null,
    "top_p": null
  },
  "test_profiles": [
    {
      "label": "1x v2.4.0 16384-token ttft",
      "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv#L1262",
      "conditions": {
        "model": "Qwen3.8-Flash-Next",
        "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
        "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
        "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
        "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
        "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
        "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
        "node_count": 1,
        "parallelism": "TP1",
        "engine": "vLLM + b12x",
        "engine_version": null,
        "runtime_execution_revision": null,
        "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
        "b12x_revision_prefix": "a1ad1b69",
        "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
        "executed_image_digest": null,
        "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
        "release_image_is_exact_cold_test_image": false,
        "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
        "experiment_date": "2026-10-16",
        "context_limit_tokens": 262144,
        "configured_max_requests": 8,
        "draft_tokens": 4,
        "kv_dtype": "fp8",
        "GPU_memory_utilization_startup_guard": 0.01,
        "configured_KV_pool_bytes": 15032385536,
        "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
        "concurrency": 1,
        "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
        "temperature": 0,
        "thinking": null,
        "output_tokens": 1,
        "actual_output_tokens_per_request": null,
        "GPU_clock_cap_MHz": null,
        "input_tokens": 16384,
        "repetitions": "4 boots x 3 cold prompts; SD between boots",
        "harness": "cold.py (k101)",
        "source_run_directory": "1x:results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/",
        "source_metric": "ttft_s",
        "workload": "long-prompt"
      }
    },
    {
      "label": "1x v2.4.0 16384-token prefill_rate",
      "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv#L1263",
      "conditions": {
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        "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
        "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
        "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
        "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
        "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
        "node_count": 1,
        "parallelism": "TP1",
        "engine": "vLLM + b12x",
        "engine_version": null,
        "runtime_execution_revision": null,
        "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
        "b12x_revision_prefix": "a1ad1b69",
        "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
        "executed_image_digest": null,
        "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
        "release_image_is_exact_cold_test_image": false,
        "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
        "experiment_date": "2026-10-16",
        "context_limit_tokens": 262144,
        "configured_max_requests": 8,
        "draft_tokens": 4,
        "kv_dtype": "fp8",
        "GPU_memory_utilization_startup_guard": 0.01,
        "configured_KV_pool_bytes": 15032385536,
        "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
        "concurrency": 1,
        "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
        "temperature": 0,
        "thinking": null,
        "output_tokens": 1,
        "actual_output_tokens_per_request": null,
        "GPU_clock_cap_MHz": null,
        "input_tokens": 16384,
        "repetitions": "4 boots x 3 cold prompts; SD between boots",
        "harness": "cold.py (k101)",
        "source_run_directory": "1x:results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/",
        "source_metric": "pp",
        "workload": "long-prompt"
      }
    },
    {
      "label": "1x v2.4.0 65536-token ttft",
      "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv#L1264",
      "conditions": {
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        "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
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        "node_count": 1,
        "parallelism": "TP1",
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        "experiment_date": "2026-10-16",
        "context_limit_tokens": 262144,
        "configured_max_requests": 8,
        "draft_tokens": 4,
        "kv_dtype": "fp8",
        "GPU_memory_utilization_startup_guard": 0.01,
        "configured_KV_pool_bytes": 15032385536,
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        "concurrency": 1,
        "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
        "temperature": 0,
        "thinking": null,
        "output_tokens": 1,
        "actual_output_tokens_per_request": null,
        "GPU_clock_cap_MHz": null,
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        "repetitions": "4 boots x 3 cold prompts; SD between boots",
        "harness": "cold.py (k101)",
        "source_run_directory": "1x:results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/",
        "source_metric": "ttft_s",
        "workload": "long-prompt"
      }
    },
    {
      "label": "1x v2.4.0 65536-token prefill_rate",
      "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv#L1265",
      "conditions": {
        "model": "Qwen3.8-Flash-Next",
        "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
        "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
        "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
        "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
        "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
        "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
        "node_count": 1,
        "parallelism": "TP1",
        "engine": "vLLM + b12x",
        "engine_version": null,
        "runtime_execution_revision": null,
        "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
        "b12x_revision_prefix": "a1ad1b69",
        "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
        "executed_image_digest": null,
        "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
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        "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
        "experiment_date": "2026-10-16",
        "context_limit_tokens": 262144,
        "configured_max_requests": 8,
        "draft_tokens": 4,
        "kv_dtype": "fp8",
        "GPU_memory_utilization_startup_guard": 0.01,
        "configured_KV_pool_bytes": 15032385536,
        "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
        "concurrency": 1,
        "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
        "temperature": 0,
        "thinking": null,
        "output_tokens": 1,
        "actual_output_tokens_per_request": null,
        "GPU_clock_cap_MHz": null,
        "input_tokens": 65536,
        "repetitions": "4 boots x 3 cold prompts; SD between boots",
        "harness": "cold.py (k101)",
        "source_run_directory": "1x:results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/",
        "source_metric": "pp",
        "workload": "long-prompt"
      }
    },
    {
      "label": "1x v2.4.0 131072-token ttft",
      "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv#L1266",
      "conditions": {
        "model": "Qwen3.8-Flash-Next",
        "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
        "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
        "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
        "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
        "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
        "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
        "node_count": 1,
        "parallelism": "TP1",
        "engine": "vLLM + b12x",
        "engine_version": null,
        "runtime_execution_revision": null,
        "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
        "b12x_revision_prefix": "a1ad1b69",
        "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
        "executed_image_digest": null,
        "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
        "release_image_is_exact_cold_test_image": false,
        "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
        "experiment_date": "2026-10-16",
        "context_limit_tokens": 262144,
        "configured_max_requests": 8,
        "draft_tokens": 4,
        "kv_dtype": "fp8",
        "GPU_memory_utilization_startup_guard": 0.01,
        "configured_KV_pool_bytes": 15032385536,
        "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
        "concurrency": 1,
        "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
        "temperature": 0,
        "thinking": null,
        "output_tokens": 1,
        "actual_output_tokens_per_request": null,
        "GPU_clock_cap_MHz": null,
        "input_tokens": 131072,
        "repetitions": "4 boots x 3 cold prompts; SD between boots",
        "harness": "cold.py (k101)",
        "source_run_directory": "1x:results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/",
        "source_metric": "ttft_s",
        "workload": "long-prompt"
      }
    },
    {
      "label": "1x v2.4.0 131072-token prefill_rate",
      "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv#L1267",
      "conditions": {
        "model": "Qwen3.8-Flash-Next",
        "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
        "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
        "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
        "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
        "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
        "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
        "node_count": 1,
        "parallelism": "TP1",
        "engine": "vLLM + b12x",
        "engine_version": null,
        "runtime_execution_revision": null,
        "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
        "b12x_revision_prefix": "a1ad1b69",
        "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
        "executed_image_digest": null,
        "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
        "release_image_is_exact_cold_test_image": false,
        "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
        "experiment_date": "2026-10-16",
        "context_limit_tokens": 262144,
        "configured_max_requests": 8,
        "draft_tokens": 4,
        "kv_dtype": "fp8",
        "GPU_memory_utilization_startup_guard": 0.01,
        "configured_KV_pool_bytes": 15032385536,
        "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
        "concurrency": 1,
        "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
        "temperature": 0,
        "thinking": null,
        "output_tokens": 1,
        "actual_output_tokens_per_request": null,
        "GPU_clock_cap_MHz": null,
        "input_tokens": 131072,
        "repetitions": "4 boots x 3 cold prompts; SD between boots",
        "harness": "cold.py (k101)",
        "source_run_directory": "1x:results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/",
        "source_metric": "pp",
        "workload": "long-prompt"
      }
    },
    {
      "label": "1x v2.4.0 allocated KV pool",
      "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/BENCHMARKS.md#L106",
      "conditions": {
        "model": "Qwen3.8-Flash-Next",
        "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
        "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
        "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
        "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
        "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
        "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
        "node_count": 1,
        "parallelism": "TP1",
        "engine": "vLLM + b12x",
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        "runtime_execution_revision": null,
        "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
        "b12x_revision_prefix": "a1ad1b69",
        "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
        "executed_image_digest": null,
        "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
        "release_image_is_exact_cold_test_image": false,
        "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
        "experiment_date": "2026-10-16",
        "context_limit_tokens": 262144,
        "configured_max_requests": 8,
        "draft_tokens": 4,
        "kv_dtype": "fp8",
        "GPU_memory_utilization_startup_guard": 0.01,
        "configured_KV_pool_bytes": 15032385536,
        "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
        "concurrency": null,
        "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
        "temperature": null,
        "thinking": null,
        "output_tokens": null,
        "actual_output_tokens_per_request": null,
        "GPU_clock_cap_MHz": null,
        "input_tokens": null,
        "memory_kind": "allocated_KV_token_pool_not_measured_peak_RAM",
        "max_context_simultaneously_validated": false
      }
    }
  ],
  "recipe_parameters": null,
  "deployment_options": []
}
```

## Reading notes

- A source document, not an independent experiment count. Preserve measurement type and unknown fields.

## Limits

- No independent Run AI Here model execution.
- Document revision is distinct from execution and weight identity.
- File bytes, host RSS, anonymous memory, MemAvailable, KV allocation and configured context are different quantities.

## License declaration

{"declared_spdx": "apache-2.0", "scope": "Source declaration only; base weights, converters, runtimes and source integration material retain their own terms."}


## Editorial answer

The v2.4.0 promotion arm serves the pinned GDN-MSE checkpoint, with an extra MXFP8 prefill shard. NVFP4 expert weights, MXFP8 paths and a refitted four-draft MTP head are separate components. The experimental image tag is retained; the later release-image digest does not prove the exact cold-test image digest. Repository release names are specific to this one-Spark recipe.

By Run AI Here editorial · 2026-10-18

Original source-grounded editorial synthesis with local Spark Qwen assistance and Codex review; no site model benchmark.

## Which quantization and build were tested?

The v2.4.0 promotion arm serves the pinned GDN-MSE checkpoint, with an extra MXFP8 prefill shard. NVFP4 expert weights, MXFP8 paths and a refitted four-draft MTP head are separate components. The experimental image tag is retained; the later release-image digest does not prove the exact cold-test image digest. Repository release names are specific to this one-Spark recipe.

Sources: https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/VERSIONS.md, https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/arm-p1/recipe.yaml

## What does the long-prompt curve measure?

The selected cold-prefix observations cover 16384, 65536 and 131072 input tokens at C1, temperature zero and one requested output token. Values are means of four boots with three cold prompts each; reported SD is between boot means. A cold prefix does not establish cold operating-system page cache. These are prefill/TTFT observations, not long-response decode or broad reasoning accuracy.

Sources: https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv, https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/BENCHMARKS.md

## How should memory limits be read?

The recipe allocates a 14 GiB FP8 KV pool and reports 993754 token capacity, while its request window is 262144 and scheduler ceiling is eight requests. The token pool is shared: these numbers do not demonstrate eight simultaneous full windows. PLE uses NVMe mmap and page cache. The 0.01 GPU-memory-utilization setting is a startup guard with explicit KV bytes, not measured one-percent memory use.

Sources: https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/README.md, https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/arm-p1/recipe.yaml

## How should two-Spark comparisons be selected?

The project numbers releases independently for one-Spark and two-Spark setups. Its capability table also combines dated measurements when a newer build has no corresponding cell. Keep setup, release, workload and original run path together instead of treating every headline cell as one matched scaling experiment.

Sources: https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/VERSIONS.md

## Selected source-reported figures

Each point retains its own configuration, measurement unit and source. No site reproduction or cross-source ranking.

```json
[
  {
    "label": "1x v2.4.0 16384-token ttft",
    "metric": "ttft",
    "value": 7.104,
    "unit": "s",
    "statistic": "mean of 4 boots x 3 cold prompts, sd between boots",
    "uncertainty": {
      "kind": "SD between boot means, not confidence interval",
      "standard_deviation": 0.016
    },
    "conditions": {
      "model": "Qwen3.8-Flash-Next",
      "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
      "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
      "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
      "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
      "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
      "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
      "node_count": 1,
      "parallelism": "TP1",
      "engine": "vLLM + b12x",
      "engine_version": null,
      "runtime_execution_revision": null,
      "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
      "b12x_revision_prefix": "a1ad1b69",
      "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
      "executed_image_digest": null,
      "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
      "release_image_is_exact_cold_test_image": false,
      "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
      "experiment_date": "2026-10-16",
      "context_limit_tokens": 262144,
      "configured_max_requests": 8,
      "draft_tokens": 4,
      "kv_dtype": "fp8",
      "GPU_memory_utilization_startup_guard": 0.01,
      "configured_KV_pool_bytes": 15032385536,
      "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
      "concurrency": 1,
      "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
      "temperature": 0,
      "thinking": null,
      "output_tokens": 1,
      "actual_output_tokens_per_request": null,
      "GPU_clock_cap_MHz": null,
      "input_tokens": 16384,
      "repetitions": "4 boots x 3 cold prompts; SD between boots",
      "harness": "cold.py (k101)",
      "source_run_directory": "1x:results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/",
      "source_metric": "ttft_s",
      "workload": "long-prompt"
    },
    "evidence_state": "source_reported",
    "site_reproduced": false,
    "source_document_id": "qwen1x-docs-data-capability.csv",
    "source_document_sha256": "4376de2ea68ca23d5208731ce948a28801cd1da2dc026c9415b2b122e9339205",
    "source_line": 1262,
    "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv#L1262"
  },
  {
    "label": "1x v2.4.0 16384-token prefill_rate",
    "metric": "prefill_rate",
    "value": 2306.4,
    "unit": "tokens/s",
    "statistic": "mean of 4 boots x 3 cold prompts, sd between boots",
    "uncertainty": {
      "kind": "SD between boot means, not confidence interval",
      "standard_deviation": 5.2
    },
    "conditions": {
      "model": "Qwen3.8-Flash-Next",
      "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
      "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
      "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
      "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
      "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
      "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
      "node_count": 1,
      "parallelism": "TP1",
      "engine": "vLLM + b12x",
      "engine_version": null,
      "runtime_execution_revision": null,
      "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
      "b12x_revision_prefix": "a1ad1b69",
      "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
      "executed_image_digest": null,
      "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
      "release_image_is_exact_cold_test_image": false,
      "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
      "experiment_date": "2026-10-16",
      "context_limit_tokens": 262144,
      "configured_max_requests": 8,
      "draft_tokens": 4,
      "kv_dtype": "fp8",
      "GPU_memory_utilization_startup_guard": 0.01,
      "configured_KV_pool_bytes": 15032385536,
      "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
      "concurrency": 1,
      "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
      "temperature": 0,
      "thinking": null,
      "output_tokens": 1,
      "actual_output_tokens_per_request": null,
      "GPU_clock_cap_MHz": null,
      "input_tokens": 16384,
      "repetitions": "4 boots x 3 cold prompts; SD between boots",
      "harness": "cold.py (k101)",
      "source_run_directory": "1x:results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/",
      "source_metric": "pp",
      "workload": "long-prompt"
    },
    "evidence_state": "source_reported",
    "site_reproduced": false,
    "source_document_id": "qwen1x-docs-data-capability.csv",
    "source_document_sha256": "4376de2ea68ca23d5208731ce948a28801cd1da2dc026c9415b2b122e9339205",
    "source_line": 1263,
    "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv#L1263"
  },
  {
    "label": "1x v2.4.0 65536-token ttft",
    "metric": "ttft",
    "value": 30.723,
    "unit": "s",
    "statistic": "mean of 4 boots x 3 cold prompts, sd between boots",
    "uncertainty": {
      "kind": "SD between boot means, not confidence interval",
      "standard_deviation": 0.06
    },
    "conditions": {
      "model": "Qwen3.8-Flash-Next",
      "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
      "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
      "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
      "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
      "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
      "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
      "node_count": 1,
      "parallelism": "TP1",
      "engine": "vLLM + b12x",
      "engine_version": null,
      "runtime_execution_revision": null,
      "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
      "b12x_revision_prefix": "a1ad1b69",
      "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
      "executed_image_digest": null,
      "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
      "release_image_is_exact_cold_test_image": false,
      "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
      "experiment_date": "2026-10-16",
      "context_limit_tokens": 262144,
      "configured_max_requests": 8,
      "draft_tokens": 4,
      "kv_dtype": "fp8",
      "GPU_memory_utilization_startup_guard": 0.01,
      "configured_KV_pool_bytes": 15032385536,
      "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
      "concurrency": 1,
      "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
      "temperature": 0,
      "thinking": null,
      "output_tokens": 1,
      "actual_output_tokens_per_request": null,
      "GPU_clock_cap_MHz": null,
      "input_tokens": 65536,
      "repetitions": "4 boots x 3 cold prompts; SD between boots",
      "harness": "cold.py (k101)",
      "source_run_directory": "1x:results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/",
      "source_metric": "ttft_s",
      "workload": "long-prompt"
    },
    "evidence_state": "source_reported",
    "site_reproduced": false,
    "source_document_id": "qwen1x-docs-data-capability.csv",
    "source_document_sha256": "4376de2ea68ca23d5208731ce948a28801cd1da2dc026c9415b2b122e9339205",
    "source_line": 1264,
    "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv#L1264"
  },
  {
    "label": "1x v2.4.0 65536-token prefill_rate",
    "metric": "prefill_rate",
    "value": 2133.2,
    "unit": "tokens/s",
    "statistic": "mean of 4 boots x 3 cold prompts, sd between boots",
    "uncertainty": {
      "kind": "SD between boot means, not confidence interval",
      "standard_deviation": 4.2
    },
    "conditions": {
      "model": "Qwen3.8-Flash-Next",
      "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
      "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
      "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
      "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
      "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
      "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
      "node_count": 1,
      "parallelism": "TP1",
      "engine": "vLLM + b12x",
      "engine_version": null,
      "runtime_execution_revision": null,
      "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
      "b12x_revision_prefix": "a1ad1b69",
      "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
      "executed_image_digest": null,
      "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
      "release_image_is_exact_cold_test_image": false,
      "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
      "experiment_date": "2026-10-16",
      "context_limit_tokens": 262144,
      "configured_max_requests": 8,
      "draft_tokens": 4,
      "kv_dtype": "fp8",
      "GPU_memory_utilization_startup_guard": 0.01,
      "configured_KV_pool_bytes": 15032385536,
      "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
      "concurrency": 1,
      "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
      "temperature": 0,
      "thinking": null,
      "output_tokens": 1,
      "actual_output_tokens_per_request": null,
      "GPU_clock_cap_MHz": null,
      "input_tokens": 65536,
      "repetitions": "4 boots x 3 cold prompts; SD between boots",
      "harness": "cold.py (k101)",
      "source_run_directory": "1x:results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/",
      "source_metric": "pp",
      "workload": "long-prompt"
    },
    "evidence_state": "source_reported",
    "site_reproduced": false,
    "source_document_id": "qwen1x-docs-data-capability.csv",
    "source_document_sha256": "4376de2ea68ca23d5208731ce948a28801cd1da2dc026c9415b2b122e9339205",
    "source_line": 1265,
    "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv#L1265"
  },
  {
    "label": "1x v2.4.0 131072-token ttft",
    "metric": "ttft",
    "value": 70.0,
    "unit": "s",
    "statistic": "mean of 4 boots x 3 cold prompts, sd between boots",
    "uncertainty": {
      "kind": "SD between boot means, not confidence interval",
      "standard_deviation": 0.137
    },
    "conditions": {
      "model": "Qwen3.8-Flash-Next",
      "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
      "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
      "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
      "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
      "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
      "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
      "node_count": 1,
      "parallelism": "TP1",
      "engine": "vLLM + b12x",
      "engine_version": null,
      "runtime_execution_revision": null,
      "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
      "b12x_revision_prefix": "a1ad1b69",
      "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
      "executed_image_digest": null,
      "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
      "release_image_is_exact_cold_test_image": false,
      "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
      "experiment_date": "2026-10-16",
      "context_limit_tokens": 262144,
      "configured_max_requests": 8,
      "draft_tokens": 4,
      "kv_dtype": "fp8",
      "GPU_memory_utilization_startup_guard": 0.01,
      "configured_KV_pool_bytes": 15032385536,
      "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
      "concurrency": 1,
      "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
      "temperature": 0,
      "thinking": null,
      "output_tokens": 1,
      "actual_output_tokens_per_request": null,
      "GPU_clock_cap_MHz": null,
      "input_tokens": 131072,
      "repetitions": "4 boots x 3 cold prompts; SD between boots",
      "harness": "cold.py (k101)",
      "source_run_directory": "1x:results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/",
      "source_metric": "ttft_s",
      "workload": "long-prompt"
    },
    "evidence_state": "source_reported",
    "site_reproduced": false,
    "source_document_id": "qwen1x-docs-data-capability.csv",
    "source_document_sha256": "4376de2ea68ca23d5208731ce948a28801cd1da2dc026c9415b2b122e9339205",
    "source_line": 1266,
    "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv#L1266"
  },
  {
    "label": "1x v2.4.0 131072-token prefill_rate",
    "metric": "prefill_rate",
    "value": 1872.5,
    "unit": "tokens/s",
    "statistic": "mean of 4 boots x 3 cold prompts, sd between boots",
    "uncertainty": {
      "kind": "SD between boot means, not confidence interval",
      "standard_deviation": 3.7
    },
    "conditions": {
      "model": "Qwen3.8-Flash-Next",
      "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
      "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
      "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
      "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
      "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
      "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
      "node_count": 1,
      "parallelism": "TP1",
      "engine": "vLLM + b12x",
      "engine_version": null,
      "runtime_execution_revision": null,
      "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
      "b12x_revision_prefix": "a1ad1b69",
      "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
      "executed_image_digest": null,
      "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
      "release_image_is_exact_cold_test_image": false,
      "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
      "experiment_date": "2026-10-16",
      "context_limit_tokens": 262144,
      "configured_max_requests": 8,
      "draft_tokens": 4,
      "kv_dtype": "fp8",
      "GPU_memory_utilization_startup_guard": 0.01,
      "configured_KV_pool_bytes": 15032385536,
      "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
      "concurrency": 1,
      "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
      "temperature": 0,
      "thinking": null,
      "output_tokens": 1,
      "actual_output_tokens_per_request": null,
      "GPU_clock_cap_MHz": null,
      "input_tokens": 131072,
      "repetitions": "4 boots x 3 cold prompts; SD between boots",
      "harness": "cold.py (k101)",
      "source_run_directory": "1x:results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/",
      "source_metric": "pp",
      "workload": "long-prompt"
    },
    "evidence_state": "source_reported",
    "site_reproduced": false,
    "source_document_id": "qwen1x-docs-data-capability.csv",
    "source_document_sha256": "4376de2ea68ca23d5208731ce948a28801cd1da2dc026c9415b2b122e9339205",
    "source_line": 1267,
    "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv#L1267"
  },
  {
    "label": "1x v2.4.0 allocated KV pool",
    "metric": "kv_pool_tokens",
    "value": 993754,
    "unit": "tokens",
    "statistic": "boot allocation observed on every reported boot",
    "uncertainty": null,
    "conditions": {
      "model": "Qwen3.8-Flash-Next",
      "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
      "model_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
      "extra_prefill_artifact": "local-inference-lab/Qwen3.8-Flash-Next-NVFP4",
      "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
      "weight_precision": "NVFP4 experts; MXFP8 dense/attention; GDN NVFP4 decode and MXFP8 prefill",
      "system": "one DGX Spark GB10 with 128 GB unified memory, local NVMe",
      "node_count": 1,
      "parallelism": "TP1",
      "engine": "vLLM + b12x",
      "engine_version": null,
      "runtime_execution_revision": null,
      "runtime_revision_prefix": "10d0acc8 files over 5dad364d",
      "b12x_revision_prefix": "a1ad1b69",
      "executed_image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
      "executed_image_digest": null,
      "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
      "release_image_is_exact_cold_test_image": false,
      "recipe_release": "1x v2.4.0 promotion A/B; k103 cb test arm, not the release-image ship check",
      "experiment_date": "2026-10-16",
      "context_limit_tokens": 262144,
      "configured_max_requests": 8,
      "draft_tokens": 4,
      "kv_dtype": "fp8",
      "GPU_memory_utilization_startup_guard": 0.01,
      "configured_KV_pool_bytes": 15032385536,
      "PLE_backing": "NVMe mmap, page cache; reported 26.8 GiB PLE table",
      "concurrency": null,
      "cache_state": "cold prefix, no cache hit; not a claimed cold OS page cache",
      "temperature": null,
      "thinking": null,
      "output_tokens": null,
      "actual_output_tokens_per_request": null,
      "GPU_clock_cap_MHz": null,
      "input_tokens": null,
      "memory_kind": "allocated_KV_token_pool_not_measured_peak_RAM",
      "max_context_simultaneously_validated": false
    },
    "evidence_state": "source_reported",
    "site_reproduced": false,
    "source_document_id": "qwen1x-docs-BENCHMARKS.md",
    "source_document_sha256": "ac2128626b607b2e4571bdb45fb7e2639e5c65c83841a8f28367bb5692986fc0",
    "source_line": 106,
    "evidence_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/BENCHMARKS.md#L106"
  }
]
```

## Supplemental source identities

```json
{
  "supplemental_sources": [
    {
      "document_id": "qwen1x-docs-data-capability.csv",
      "parent_record_id": "qwen38-flash-next-single-spark-context",
      "publisher": "ursuciprian",
      "repository": "ursuciprian/qwen3.8-flash-next-1x-dgx-spark",
      "revision": "348ede7e28a01f6aa6b501aaf2392d20a286a012",
      "document_path": "docs/data/capability.csv",
      "pinned_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/data/capability.csv",
      "document_sha256": "4376de2ea68ca23d5208731ce948a28801cd1da2dc026c9415b2b122e9339205",
      "checked_on": "2026-10-18"
    },
    {
      "document_id": "qwen1x-docs-BENCHMARKS.md",
      "parent_record_id": "qwen38-flash-next-single-spark-context",
      "publisher": "ursuciprian",
      "repository": "ursuciprian/qwen3.8-flash-next-1x-dgx-spark",
      "revision": "348ede7e28a01f6aa6b501aaf2392d20a286a012",
      "document_path": "docs/BENCHMARKS.md",
      "pinned_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/docs/BENCHMARKS.md",
      "document_sha256": "ac2128626b607b2e4571bdb45fb7e2639e5c65c83841a8f28367bb5692986fc0",
      "checked_on": "2026-10-18"
    },
    {
      "document_id": "qwen1x-VERSIONS.md",
      "parent_record_id": "qwen38-flash-next-single-spark-context",
      "publisher": "ursuciprian",
      "repository": "ursuciprian/qwen3.8-flash-next-1x-dgx-spark",
      "revision": "348ede7e28a01f6aa6b501aaf2392d20a286a012",
      "document_path": "VERSIONS.md",
      "pinned_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/VERSIONS.md",
      "document_sha256": "c513523883d95b716707697a0633fb9c5e63c9cf748aeaf37a38d4f771913abd",
      "checked_on": "2026-10-18"
    },
    {
      "document_id": "qwen1x-results-k103-1x-prefill-combo-ab-20261016-1206-cb-01-arm-p1-recipe.yaml",
      "parent_record_id": "qwen38-flash-next-single-spark-context",
      "publisher": "ursuciprian",
      "repository": "ursuciprian/qwen3.8-flash-next-1x-dgx-spark",
      "revision": "348ede7e28a01f6aa6b501aaf2392d20a286a012",
      "document_path": "results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/arm-p1/recipe.yaml",
      "pinned_url": "https://github.com/ursuciprian/qwen3.8-flash-next-1x-dgx-spark/blob/348ede7e28a01f6aa6b501aaf2392d20a286a012/results/k103-1x-prefill-combo-ab-20261016-1206/cb-01/arm-p1/recipe.yaml",
      "document_sha256": "33ecbeea74e85987bd4dfa7418543438e98ff93ea2270c103deccab44a43fa7e",
      "checked_on": "2026-10-18"
    }
  ]
}
```

## memory observations

```json
{
  "memory_observations": [
    {
      "id": "qwen-1x-v2.4-cold",
      "model_artifact": "ursuciprian/Qwen3.8-Flash-Next-NVFP4-GDN-MSE",
      "checkpoint_revision": "03f4a0570496bbe741189f4a2a7d611679e85406",
      "extra_prefill_revision": "7c4f1bc1a2d6847e0cbc01ac6b823f00251de8dd",
      "engine": "vLLM + b12x",
      "image_tag": "ghcr.io/ursuciprian/spark-vllm-b12x:k103-20261015-a1ad1b69-10d0acc8",
      "executed_image_digest": null,
      "release_image_digest": "sha256:30fe678ed7ae5d4deb277be137497bcf597e46e829471b7bed24edd4294a84f1",
      "context_limit_tokens": 262144,
      "measured_cold_input_tokens": [
        16384,
        65536,
        131072
      ],
      "configured_max_requests": 8,
      "KV_pool_bytes": 15032385536,
      "KV_pool_tokens": 993754,
      "MTP_draft_tokens": 4,
      "PLE_file_reported_GiB": 26.8,
      "all_eight_full_window_requests_proven": false,
      "cold_prefix_is_not_cold_page_cache": true
    }
  ]
}
```