# DeepSeek 1017: near-million-token needle and memory floor

Two saved runs found one exact-string needle at 63 percent depth in random filler, with 1034753 and 1035020 prompt tokens. Each completion is seven tokens, with zero cached prompt tokens. These are two different build/setup observations, not repeated measurements of one unchanged configuration or evidence of general long-document reasoning.

- Type: Performance report
- Evidence: source_reported; site reproduced: false
- Model family: DeepSeek
- Model: LibertAIDAI/DeepSeek-V4.1-Flash-1017-EXL3-2.9bpw
- Original author: Elevatormusic
- Original project: https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark
- Pinned document: https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/INDEX.md
- Source revision: 9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32
- Source commit time (not experiment date): 2026-10-18T05:40:29Z
- Checked: 2026-10-18
- Experiment date: 2026-10-18T01:51:54Z
- Runtime topics: TensorFold
- Hardware topics: spark, nvidia
- Reported setup: {"system": "two DGX Spark GB10, TP2", "node_count": 2, "parallelism": null, "kv_dtype": null, "context_limit_tokens": 1048576, "experiment_date": "2026-10-18T01:51:54Z"}
- Performance figures: attributed selections with per-point conditions; no cross-source ranking

## Conditions

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

```json
{
  "conditions": {
    "model_revision": "afc7aa0aab98ee735c0f54e0a122019af1ac08f1",
    "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": "fd2365042f56 near-1M first token",
      "evidence_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/needle-1m.json#L8",
      "conditions": {
        "model": "DeepSeek-V4.1-Flash-1017",
        "model_artifact": "LibertAIDAI/DeepSeek-V4.1-Flash-1017-EXL3-2.9bpw",
        "model_revision": "afc7aa0aab98ee735c0f54e0a122019af1ac08f1",
        "Engram_revision": "1bae0e1088993b9b82de08f59de5be5a34e42170",
        "weight_precision": "EXL3 2.9bpw",
        "system": "two DGX Spark GB10, TP2",
        "node_count": 2,
        "engine": "TensorFold Python 0.6.6",
        "runtime_execution_revision": null,
        "executed_image_digest": null,
        "context_limit_tokens": 1048576,
        "concurrency": 1,
        "needle_depth_fraction": 0.63,
        "workload": "one exact-string needle in random filler lines",
        "temperature": null,
        "top_p": null,
        "thinking": null,
        "repetitions": 1,
        "general_quality_evaluation": false,
        "multi_request_long_context_validated": false,
        "runtime_revision_prefix": "fd2365042f56",
        "input_tokens": 1034753,
        "output_tokens": 7,
        "cached_tokens": 0,
        "cache_state": "zero prefix-cache hit tokens; not a cold OS page-cache guarantee",
        "experiment_date": "2026-10-18T01:51:54Z",
        "needle_found": true,
        "reasoning_tokens": 0,
        "total_seconds": 835.8
      }
    },
    {
      "label": "92aa710b533d near-1M first token",
      "evidence_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/needle-1m-final.json#L8",
      "conditions": {
        "model": "DeepSeek-V4.1-Flash-1017",
        "model_artifact": "LibertAIDAI/DeepSeek-V4.1-Flash-1017-EXL3-2.9bpw",
        "model_revision": "afc7aa0aab98ee735c0f54e0a122019af1ac08f1",
        "Engram_revision": "1bae0e1088993b9b82de08f59de5be5a34e42170",
        "weight_precision": "EXL3 2.9bpw",
        "system": "two DGX Spark GB10, TP2",
        "node_count": 2,
        "engine": "TensorFold Python 0.6.6",
        "runtime_execution_revision": null,
        "executed_image_digest": null,
        "context_limit_tokens": 1048576,
        "concurrency": 1,
        "needle_depth_fraction": 0.63,
        "workload": "one exact-string needle in random filler lines",
        "temperature": null,
        "top_p": null,
        "thinking": null,
        "repetitions": 1,
        "general_quality_evaluation": false,
        "multi_request_long_context_validated": false,
        "runtime_revision_prefix": "92aa710b533d",
        "input_tokens": 1035020,
        "output_tokens": 7,
        "cached_tokens": 0,
        "cache_state": "zero prefix-cache hit tokens; not a cold OS page-cache guarantee",
        "experiment_date": "2026-10-18T04:47:07Z",
        "needle_found": true,
        "reasoning_tokens": 0,
        "total_seconds": 825.9
      }
    },
    {
      "label": "near-1M final head minimum MemAvailable",
      "evidence_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/INDEX.md#L59",
      "conditions": {
        "model": "DeepSeek-V4.1-Flash-1017",
        "model_artifact": "LibertAIDAI/DeepSeek-V4.1-Flash-1017-EXL3-2.9bpw",
        "model_revision": "afc7aa0aab98ee735c0f54e0a122019af1ac08f1",
        "Engram_revision": "1bae0e1088993b9b82de08f59de5be5a34e42170",
        "weight_precision": "EXL3 2.9bpw",
        "system": "two DGX Spark GB10, TP2",
        "node_count": 2,
        "engine": "TensorFold Python 0.6.6",
        "runtime_execution_revision": null,
        "executed_image_digest": null,
        "context_limit_tokens": 1048576,
        "concurrency": 1,
        "needle_depth_fraction": 0.63,
        "workload": "one exact-string needle in random filler lines",
        "temperature": null,
        "top_p": null,
        "thinking": null,
        "repetitions": 1,
        "general_quality_evaluation": false,
        "multi_request_long_context_validated": false,
        "runtime_revision_prefix": "92aa710b533d",
        "input_tokens": 1035020,
        "output_tokens": 7,
        "cache_state": "same final needle; cached_tokens 0",
        "experiment_date": "2026-10-18",
        "memory_kind": "minimum_host_MemAvailable_during_prefill",
        "node": "head",
        "earlyoom_limit_MiB_at_measurement": 1536,
        "earlyoom_later_limit_MiB": 1024,
        "OS_memory_controls_changed": true,
        "ordinary_host_baseline_inferred": false
      }
    },
    {
      "label": "near-1M final worker minimum MemAvailable",
      "evidence_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/INDEX.md#L59",
      "conditions": {
        "model": "DeepSeek-V4.1-Flash-1017",
        "model_artifact": "LibertAIDAI/DeepSeek-V4.1-Flash-1017-EXL3-2.9bpw",
        "model_revision": "afc7aa0aab98ee735c0f54e0a122019af1ac08f1",
        "Engram_revision": "1bae0e1088993b9b82de08f59de5be5a34e42170",
        "weight_precision": "EXL3 2.9bpw",
        "system": "two DGX Spark GB10, TP2",
        "node_count": 2,
        "engine": "TensorFold Python 0.6.6",
        "runtime_execution_revision": null,
        "executed_image_digest": null,
        "context_limit_tokens": 1048576,
        "concurrency": 1,
        "needle_depth_fraction": 0.63,
        "workload": "one exact-string needle in random filler lines",
        "temperature": null,
        "top_p": null,
        "thinking": null,
        "repetitions": 1,
        "general_quality_evaluation": false,
        "multi_request_long_context_validated": false,
        "runtime_revision_prefix": "92aa710b533d",
        "input_tokens": 1035020,
        "output_tokens": 7,
        "cache_state": "same final needle; cached_tokens 0",
        "experiment_date": "2026-10-18",
        "memory_kind": "minimum_host_MemAvailable_during_prefill",
        "node": "worker",
        "earlyoom_limit_MiB_at_measurement": 1536,
        "earlyoom_later_limit_MiB": 1024,
        "OS_memory_controls_changed": true,
        "ordinary_host_baseline_inferred": 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": null, "scope": "Source declaration only; base weights, converters, runtimes and source integration material retain their own terms."}


## Editorial answer

Two saved runs found one exact-string needle at 63 percent depth in random filler, with 1034753 and 1035020 prompt tokens. Each completion is seven tokens, with zero cached prompt tokens. These are two different build/setup observations, not repeated measurements of one unchanged configuration or evidence of general long-document reasoning.

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.

## What does success mean here?

Two saved runs found one exact-string needle at 63 percent depth in random filler, with 1034753 and 1035020 prompt tokens. Each completion is seven tokens, with zero cached prompt tokens. These are two different build/setup observations, not repeated measurements of one unchanged configuration or evidence of general long-document reasoning.

Sources: https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/needle-1m.json, https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/needle-1m-final.json

## How much latency and headroom were observed?

The first token took 830.4 seconds in the earlier run and 817.7 seconds in the final setup. During the final fill, minimum host MemAvailable was 1779 MiB on the head and 2542 MiB on the worker. The source describes engine swap policy, host reclaim settings, Engram page dropping and earlyoom thresholds. This is a tuned narrow-margin observation, not a safe default capacity.

Sources: https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/INDEX.md

## What is still unknown?

Exact executed image digests and request sampling values are absent from the selected raw records. The author also reports slower prefill states and final-image runs below the best earlier result. One depth, one string and a seven-token output do not validate multiple needles, long generation, multimodal context, concurrent near-million-token requests or general answer correctness.

Sources: https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/docs/KNOWN-LIMITS.md, https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/INDEX.md

## What do the saved usage counts establish?

The two saved JSON records retain the actual prompt count, seven completion tokens, zero cached prompt tokens and zero reported reasoning tokens. These values establish the size and outcome of the performed requests. Zero reasoning tokens does not identify an unlogged request thinking flag, and a configured context limit is not an additional completed request.

Sources: https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/needle-1m-final.json

## Selected source-reported figures

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

```json
[
  {
    "label": "fd2365042f56 near-1M first token",
    "metric": "ttft",
    "value": 830.4,
    "unit": "s",
    "statistic": "single prompt, no variance estimate",
    "uncertainty": null,
    "conditions": {
      "model": "DeepSeek-V4.1-Flash-1017",
      "model_artifact": "LibertAIDAI/DeepSeek-V4.1-Flash-1017-EXL3-2.9bpw",
      "model_revision": "afc7aa0aab98ee735c0f54e0a122019af1ac08f1",
      "Engram_revision": "1bae0e1088993b9b82de08f59de5be5a34e42170",
      "weight_precision": "EXL3 2.9bpw",
      "system": "two DGX Spark GB10, TP2",
      "node_count": 2,
      "engine": "TensorFold Python 0.6.6",
      "runtime_execution_revision": null,
      "executed_image_digest": null,
      "context_limit_tokens": 1048576,
      "concurrency": 1,
      "needle_depth_fraction": 0.63,
      "workload": "one exact-string needle in random filler lines",
      "temperature": null,
      "top_p": null,
      "thinking": null,
      "repetitions": 1,
      "general_quality_evaluation": false,
      "multi_request_long_context_validated": false,
      "runtime_revision_prefix": "fd2365042f56",
      "input_tokens": 1034753,
      "output_tokens": 7,
      "cached_tokens": 0,
      "cache_state": "zero prefix-cache hit tokens; not a cold OS page-cache guarantee",
      "experiment_date": "2026-10-18T01:51:54Z",
      "needle_found": true,
      "reasoning_tokens": 0,
      "total_seconds": 835.8
    },
    "evidence_state": "source_reported",
    "site_reproduced": false,
    "source_document_id": "dsneedle-runs-2026-10-18-needle-1m.json",
    "source_document_sha256": "9b81971c1378ab5b0bef466219c3a7aa7e2f78315bddbfc5bd0837cfec2fde40",
    "source_line": 8,
    "evidence_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/needle-1m.json#L8"
  },
  {
    "label": "92aa710b533d near-1M first token",
    "metric": "ttft",
    "value": 817.7,
    "unit": "s",
    "statistic": "single prompt, no variance estimate",
    "uncertainty": null,
    "conditions": {
      "model": "DeepSeek-V4.1-Flash-1017",
      "model_artifact": "LibertAIDAI/DeepSeek-V4.1-Flash-1017-EXL3-2.9bpw",
      "model_revision": "afc7aa0aab98ee735c0f54e0a122019af1ac08f1",
      "Engram_revision": "1bae0e1088993b9b82de08f59de5be5a34e42170",
      "weight_precision": "EXL3 2.9bpw",
      "system": "two DGX Spark GB10, TP2",
      "node_count": 2,
      "engine": "TensorFold Python 0.6.6",
      "runtime_execution_revision": null,
      "executed_image_digest": null,
      "context_limit_tokens": 1048576,
      "concurrency": 1,
      "needle_depth_fraction": 0.63,
      "workload": "one exact-string needle in random filler lines",
      "temperature": null,
      "top_p": null,
      "thinking": null,
      "repetitions": 1,
      "general_quality_evaluation": false,
      "multi_request_long_context_validated": false,
      "runtime_revision_prefix": "92aa710b533d",
      "input_tokens": 1035020,
      "output_tokens": 7,
      "cached_tokens": 0,
      "cache_state": "zero prefix-cache hit tokens; not a cold OS page-cache guarantee",
      "experiment_date": "2026-10-18T04:47:07Z",
      "needle_found": true,
      "reasoning_tokens": 0,
      "total_seconds": 825.9
    },
    "evidence_state": "source_reported",
    "site_reproduced": false,
    "source_document_id": "dsneedle-runs-2026-10-18-needle-1m-final.json",
    "source_document_sha256": "c476006b019d46c68a334ad3763f3e8e0f0532d01dfc6fb800c043c225709ab1",
    "source_line": 8,
    "evidence_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/needle-1m-final.json#L8"
  },
  {
    "label": "near-1M final head minimum MemAvailable",
    "metric": "minimum_memavailable",
    "value": 1779,
    "unit": "MiB",
    "statistic": "minimum observed in this one fill, not a safe capacity guarantee",
    "uncertainty": null,
    "conditions": {
      "model": "DeepSeek-V4.1-Flash-1017",
      "model_artifact": "LibertAIDAI/DeepSeek-V4.1-Flash-1017-EXL3-2.9bpw",
      "model_revision": "afc7aa0aab98ee735c0f54e0a122019af1ac08f1",
      "Engram_revision": "1bae0e1088993b9b82de08f59de5be5a34e42170",
      "weight_precision": "EXL3 2.9bpw",
      "system": "two DGX Spark GB10, TP2",
      "node_count": 2,
      "engine": "TensorFold Python 0.6.6",
      "runtime_execution_revision": null,
      "executed_image_digest": null,
      "context_limit_tokens": 1048576,
      "concurrency": 1,
      "needle_depth_fraction": 0.63,
      "workload": "one exact-string needle in random filler lines",
      "temperature": null,
      "top_p": null,
      "thinking": null,
      "repetitions": 1,
      "general_quality_evaluation": false,
      "multi_request_long_context_validated": false,
      "runtime_revision_prefix": "92aa710b533d",
      "input_tokens": 1035020,
      "output_tokens": 7,
      "cache_state": "same final needle; cached_tokens 0",
      "experiment_date": "2026-10-18",
      "memory_kind": "minimum_host_MemAvailable_during_prefill",
      "node": "head",
      "earlyoom_limit_MiB_at_measurement": 1536,
      "earlyoom_later_limit_MiB": 1024,
      "OS_memory_controls_changed": true,
      "ordinary_host_baseline_inferred": false
    },
    "evidence_state": "source_reported",
    "site_reproduced": false,
    "source_document_id": "dsneedle-runs-2026-10-18-INDEX.md",
    "source_document_sha256": "e69d8c270e6407ddbaacb82da36cc48994b6f20fd4300d176753371b4e23fb8e",
    "source_line": 59,
    "evidence_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/INDEX.md#L59"
  },
  {
    "label": "near-1M final worker minimum MemAvailable",
    "metric": "minimum_memavailable",
    "value": 2542,
    "unit": "MiB",
    "statistic": "minimum observed in this one fill, not a safe capacity guarantee",
    "uncertainty": null,
    "conditions": {
      "model": "DeepSeek-V4.1-Flash-1017",
      "model_artifact": "LibertAIDAI/DeepSeek-V4.1-Flash-1017-EXL3-2.9bpw",
      "model_revision": "afc7aa0aab98ee735c0f54e0a122019af1ac08f1",
      "Engram_revision": "1bae0e1088993b9b82de08f59de5be5a34e42170",
      "weight_precision": "EXL3 2.9bpw",
      "system": "two DGX Spark GB10, TP2",
      "node_count": 2,
      "engine": "TensorFold Python 0.6.6",
      "runtime_execution_revision": null,
      "executed_image_digest": null,
      "context_limit_tokens": 1048576,
      "concurrency": 1,
      "needle_depth_fraction": 0.63,
      "workload": "one exact-string needle in random filler lines",
      "temperature": null,
      "top_p": null,
      "thinking": null,
      "repetitions": 1,
      "general_quality_evaluation": false,
      "multi_request_long_context_validated": false,
      "runtime_revision_prefix": "92aa710b533d",
      "input_tokens": 1035020,
      "output_tokens": 7,
      "cache_state": "same final needle; cached_tokens 0",
      "experiment_date": "2026-10-18",
      "memory_kind": "minimum_host_MemAvailable_during_prefill",
      "node": "worker",
      "earlyoom_limit_MiB_at_measurement": 1536,
      "earlyoom_later_limit_MiB": 1024,
      "OS_memory_controls_changed": true,
      "ordinary_host_baseline_inferred": false
    },
    "evidence_state": "source_reported",
    "site_reproduced": false,
    "source_document_id": "dsneedle-runs-2026-10-18-INDEX.md",
    "source_document_sha256": "e69d8c270e6407ddbaacb82da36cc48994b6f20fd4300d176753371b4e23fb8e",
    "source_line": 59,
    "evidence_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/INDEX.md#L59"
  }
]
```

## Supplemental source identities

```json
{
  "supplemental_sources": [
    {
      "document_id": "dsneedle-runs-2026-10-18-needle-1m.json",
      "parent_record_id": "deepseek-1017-million-token-needle",
      "publisher": "Elevatormusic",
      "repository": "Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark",
      "revision": "9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32",
      "document_path": "runs/2026-10-18/needle-1m.json",
      "pinned_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/needle-1m.json",
      "document_sha256": "9b81971c1378ab5b0bef466219c3a7aa7e2f78315bddbfc5bd0837cfec2fde40",
      "checked_on": "2026-10-18"
    },
    {
      "document_id": "dsneedle-runs-2026-10-18-needle-1m-final.json",
      "parent_record_id": "deepseek-1017-million-token-needle",
      "publisher": "Elevatormusic",
      "repository": "Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark",
      "revision": "9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32",
      "document_path": "runs/2026-10-18/needle-1m-final.json",
      "pinned_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/needle-1m-final.json",
      "document_sha256": "c476006b019d46c68a334ad3763f3e8e0f0532d01dfc6fb800c043c225709ab1",
      "checked_on": "2026-10-18"
    },
    {
      "document_id": "dsneedle-docs-KNOWN-LIMITS.md",
      "parent_record_id": "deepseek-1017-million-token-needle",
      "publisher": "Elevatormusic",
      "repository": "Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark",
      "revision": "9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32",
      "document_path": "docs/KNOWN-LIMITS.md",
      "pinned_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/docs/KNOWN-LIMITS.md",
      "document_sha256": "eeb6bc6f7a3fce20654f977581e9718b124e70fc01ab358efebefe9afd9dc942",
      "checked_on": "2026-10-18"
    }
  ]
}
```

## memory observations

```json
{
  "memory_observations": [
    {
      "record_id": "deepseek-1017-million-token-needle",
      "kind": "minimum_host_MemAvailable_during_final_fill",
      "head_MiB": 1779,
      "worker_MiB": 2542,
      "host_tuning_required_in_source": true,
      "safe_capacity_guarantee": false
    }
  ]
}
```

## long context cases

```json
{
  "long_context_cases": [
    {
      "id": "dsneedle-runs-2026-10-18-needle-1m.json",
      "classification": "source_reported_single_needle_success",
      "configured_limit_tokens": 1048576,
      "actual_input_tokens": 1034753,
      "actual_output_tokens": 7,
      "needle_depth_fraction": 0.63,
      "exact_match": true,
      "TTFT_seconds": 830.4,
      "cached_tokens": 0,
      "runtime_revision_prefix": "fd2365042f56",
      "executed_image_digest": null,
      "sampling": null,
      "quality_scope": "one needle at one depth; not broad reasoning, multi-needle, long-response or concurrency validation",
      "source_document_id": "dsneedle-runs-2026-10-18-needle-1m.json",
      "source_document_sha256": "9b81971c1378ab5b0bef466219c3a7aa7e2f78315bddbfc5bd0837cfec2fde40",
      "source_line": 3,
      "evidence_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/needle-1m.json#L3"
    },
    {
      "id": "dsneedle-runs-2026-10-18-needle-1m-final.json",
      "classification": "source_reported_single_needle_success",
      "configured_limit_tokens": 1048576,
      "actual_input_tokens": 1035020,
      "actual_output_tokens": 7,
      "needle_depth_fraction": 0.63,
      "exact_match": true,
      "TTFT_seconds": 817.7,
      "cached_tokens": 0,
      "runtime_revision_prefix": "92aa710b533d",
      "executed_image_digest": null,
      "sampling": null,
      "quality_scope": "one needle at one depth; not broad reasoning, multi-needle, long-response or concurrency validation",
      "source_document_id": "dsneedle-runs-2026-10-18-needle-1m-final.json",
      "source_document_sha256": "c476006b019d46c68a334ad3763f3e8e0f0532d01dfc6fb800c043c225709ab1",
      "source_line": 3,
      "evidence_url": "https://github.com/Elevatormusic/DeepSeek-V4.1-Flash-1017-EXL3-TensorFold-2x-DGX-Spark/blob/9c6ab02340b770c6c3e1a9a4d5e70a56c5829d32/runs/2026-10-18/needle-1m-final.json#L3"
    }
  ]
}
```