{
  "case": "fp8-b4-n1-128k",
  "batch": 4,
  "blocks": 1,
  "precision": "fp8",
  "budget_kib": 128,
  "status": "planner-rejected",
  "returncode": 1,
  "wall_seconds": 67.557,
  "stages": {
    "compile_runtime": "280\u00b5s",
    "gemm_candidates": "36.8s",
    "construct_mid": "67.5s"
  },
  "diagnostic": [
    "2026-09-22T14:58:50.385358Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:compile_runtime: close time.busy=280\u00b5s time.idle=5.63\u00b5s",
    "2026-09-22T14:59:19.164543Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:construct_mid:gemm_candidates: close time.busy=28.8s time.idle=2.92\u00b5s",
    "2026-09-22T14:59:55.948308Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:construct_mid:gemm_candidates: close time.busy=36.8s time.idle=3.77\u00b5s",
    "2026-09-22T14:59:57.868496Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:construct_mid: close time.busy=67.5s time.idle=3.01\u00b5s",
    "2026-09-22T14:59:57.868533Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}: close time.busy=67.5s time.idle=2.81\u00b5s",
    "Error: planning failed: no fitting path through high operation boundary 3",
    "",
    "Caused by:",
    "    no fitting path through high operation boundary 3"
  ]
}