[ { "api_error_status": null, "duration_api_ms": 34146, "duration_ms": 34193, "fast_mode_disabled_reason": "sdk_opt_in_required", "fast_mode_state": "off", "first_content_frame_ms": 1144, "is_error": false, "modelUsage": { "claude-opus-5": { "cacheCreationInputTokens": 4699, "cacheReadInputTokens": 0, "canonicalModel": "claude-opus-5", "contextWindow": 1000000, "costBasis": "list", "costUSD": 0.110875, "inputTokens": 2, "maxOutputTokens": 64000, "outputTokens": 2555, "provider": "firstParty", "thinkingTokens": 9, "webSearchRequests": 0 } }, "num_turns": 1, "permission_denials": [], "queued_turn_count": 0, "result": "## Preconditions\n\n1. Every emitted program is a single MLIR `module { ... }` whose body contains nothing but `dataflow.thread` definitions.\n2. Each emitted program contains between one and three `dataflow.thread` definitions, and never zero.\n3. Every thread is declared `private`, is named `@thread_` where `` is its zero-based index in the module, and carries the domain attribute `#dataflow.thread_domain`.\n4. Every thread has exactly the four data arguments `%target: memref<4xi32>`, `%value: i32`, `%enabled: i1`, `%limit: index`, in that order, and exactly one control argument `ctrl (%start: none)`.\n5. Every thread body begins with exactly two `arith.constant` definitions of type `index`, one holding `0` and one holding `1`, defined before any other operation in the body.\n6. Every thread body ends with a `dataflow.thread.yield` terminator with no operands.\n7. Every thread contains one or two `loom.spatial_region` publication sites, and never zero and never more than two; the sites are sequential siblings in the thread's structured scope (no site is nested inside another site).\n8. Every `loom.spatial_region` operation appears either directly in the thread body or inside `scf.for` and/or `scf.if` scopes contained in that thread body; no other nesting form occurs.\n9. Every `scf.for` that wraps a region runs from the thread's `index` zero constant to the thread argument `%limit` in steps of the thread's `index` one constant, i.e. its bounds and step are exactly the values defined in the enclosing thread's preamble and its argument list.\n10. Every `scf.if` that wraps a region is predicated on the thread argument `%enabled` of type `i1` and has no `else` region and no results.\n11. When both loop and conditional scopes wrap a region, the `scf.for` is the outer scope and the `scf.if` is the inner scope; the reverse nesting never occurs.\n12. Every `loom.spatial_region` is written in generic form with an explicit `operandSegmentSizes` array of four `i32` entries \u2014 value inputs, stream input channels, memory inputs, stream output channels, in that order \u2014 and an explicit `resultSegmentSizes` array of two `i32` entries \u2014 value outputs then memory outputs.\n13. The segment-size arrays of every region agree exactly with the operand list, the entry block signature and the function type written on the operation: operand counts, entry block argument count and types, and result counts are mutually consistent.\n14. Every region's operands are supplied only by values that are in scope at the site, namely the enclosing thread's own arguments.\n15. Every region's body is a single block labelled `^bb_entry` whose arguments correspond positionally to the region's operands with matching types.\n16. Every region body terminates with a generic-form `\"loom.spatial_yield\"` whose `operandSegmentSizes` is a two-entry `i32` array, and whose operand count and function type match the region's result signature: zero operands for regions with no results, one `i32` operand for regions producing one `i32` result.\n17. Every region carries a `graph_name` string attribute and a `source_maps` attribute whose value is the empty list.\n18. Every value produced inside a region body is defined before its use, and any value yielded from a region is defined within that same region body.\n19. Memory-writing regions take the memref as an explicit memory input operand and store through the corresponding entry-block argument rather than capturing the thread argument implicitly.\n20. No emitted program contains `scf.parallel`, `scf.forall`, `dataflow.thread.launch`, function calls, or blocking receive operations anywhere inside or around a region.\n21. No region contains any nested `loom.spatial_region`, and no region has both results and memory outputs \u2014 memory outputs are always zero.\n22. Stream input channels and stream output channels are always absent: their segment counts are zero in every emitted region.\n23. All SSA names within a thread are unique, and names derived per site are unique across sites of the same thread and across threads.\n\n## Sampling conventions\n\n1. The module size is sampled uniformly from the closed range one to three threads; larger modules are never emitted.\n2. The per-thread site count is sampled independently per thread from the closed range one to two; three or more sites per thread never occur.\n3. Thread names use the fixed scheme `@thread_` concatenated with the decimal thread index starting at `0`.\n4. Per-site SSA suffixes use the fixed scheme `_`, both zero-based decimals, giving names such as `%out_1_0`, `%payload_2_1`, `%iv_0_1`.\n5. The constant preamble names are fixed as `%c_zero_` and `%c_one_`, one pair per thread, even when no loop in that thread uses them.\n6. `graph_name` values are always the literal `\"graph_\" + + \"_\" + `; no other naming scheme or duplicate names are produced.\n7. Exactly four nesting shapes are emitted per site, chosen independently: bare region, region in `scf.for`, region in `scf.if`, and region in `scf.for` containing `scf.if`; an `scf.if` wrapping an `scf.for` is never emitted, and no nesting depth beyond two is emitted.\n8. Exactly three region bodies are emitted, chosen independently per site: an empty region with no operands and no results; a memory region with one value input and one memory input and no results; and a value region with one value input and one value output.\n9. The memory region always stores the single `i32` payload at a locally defined `index` constant `0` into slot zero of the `memref<4xi32>`; no other index, offset, or load is emitted.\n10. The value region always computes `arith.addi` of its single lane argument with itself and yields that `i32` sum; no other arithmetic, no multiple results, and no multi-operation bodies are emitted.\n11. The empty region's body consists solely of the entry block label and the yield; it never contains computation.\n12. Region operands, when present, are always drawn from the fixed thread arguments `%value` (value input) and `%target` (memory input); the thread arguments `%enabled`, `%limit` and `%start` are never passed into a region.\n13. The `i1` argument `%enabled` is used only as an `scf.if` condition, and `%limit` only as a loop upper bound; neither is otherwise consumed.\n14. The control argument `%start` is declared on every thread but never used.\n15. Types are fixed throughout: `i32` for payload values, `memref<4xi32>` for memory, `index` for loop induction and constants, `i1` for the predicate.\n16. Region results, when produced, are bound to `%out_` and are never consumed by any subsequent operation.\n17. Regions are always written in generic (quoted) form with explicit segment attributes rather than any custom assembly form, and `scf.for`/`scf.if` are always written in custom form.\n18. The `source_maps` attribute is always the empty list; non-empty source maps are never emitted.\n19. Indentation is fixed: two spaces for thread-body statements, four spaces for the region operation, six for the entry block label, eight for region body statements; nested `scf.if` bodies are not further indented relative to their `scf.for` parent.\n20. `scf.for` loops always use unit step and zero lower bound rather than sampled bounds, and loop bodies contain exactly one site each.\n21. Each thread's sites are emitted in ascending site-index order and each thread in ascending thread-index order, with no interleaving or reordering.\n22. The nesting shape and the region body kind are chosen independently, so all twelve combinations are reachable at every site.", "result_index": 0, "session_id": "b2ef6bd8-719d-4a80-8d46-357b736e77c3", "stop_reason": "end_turn", "subagent_stats": { "by_type": {}, "completed": 0, "failed": 0, "killed": { "parent": 0, "system": 0, "user": 0 }, "max_depth": 0, "refused": { "budget": 0, "concurrency_limit": 0, "depth_limit": 0 }, "requested": { "background": 0, "foreground": 0, "unset": 0 }, "spawned": 0, "spawned_by_subagents": 0, "started_in_background": 0 }, "subtype": "success", "terminal_reason": "completed", "time_to_request_ms": 47, "total_cost_usd": 0.110875, "ttft_ms": 1163, "ttft_stream_ms": 1143, "type": "result", "usage": { "cache_creation": { "ephemeral_1h_input_tokens": 4699, "ephemeral_5m_input_tokens": 0 }, "cache_creation_input_tokens": 4699, "cache_read_input_tokens": 0, "inference_geo": "not_available", "input_tokens": 2, "iterations": [], "output_tokens": 2555, "output_tokens_details": { "thinking_tokens": 9 }, "server_tool_use": { "web_fetch_requests": 0, "web_search_requests": 0 }, "service_tier": "standard", "speed": "standard" }, "uuid": "d9ca4adb-0203-4f72-a01a-7509106ba47f" } ]