{
  "case": "fp8-b4-n1-64k",
  "batch": 4,
  "blocks": 1,
  "precision": "fp8",
  "budget_kib": 64,
  "status": "planner-rejected",
  "returncode": 1,
  "wall_seconds": 22.665,
  "stages": {
    "compile_runtime": "179\u00b5s",
    "gemm_candidates": "12.3s",
    "construct_mid": "22.6s"
  },
  "diagnostic": [
    "2026-09-22T14:59:57.942512Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:compile_runtime: close time.busy=179\u00b5s time.idle=2.78\u00b5s",
    "2026-09-22T15:00:08.141386Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:construct_mid:gemm_candidates: close time.busy=10.2s time.idle=2.45\u00b5s",
    "2026-09-22T15:00:20.427152Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:construct_mid:gemm_candidates: close time.busy=12.3s time.idle=3.00\u00b5s",
    "2026-09-22T15:00:20.500118Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:construct_mid: close time.busy=22.6s time.idle=2.53\u00b5s",
    "2026-09-22T15:00:20.500143Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}: close time.busy=22.6s time.idle=1.85\u00b5s",
    "Error: planning failed: no fitting path through high operation boundary 3",
    "",
    "Caused by:",
    "    no fitting path through high operation boundary 3"
  ]
}