{"service":"echosizer-web","source":"engine-snapshot","note":"v0.1 web shell serves golden CLI snapshots. Live engine runs via `echosizer run`.","record":{"id":"coding-assistant-200","as_of":"2026-08-27","winner":{"gpu_id":"h200-sxm","tp":1,"batch_vram":19,"batch_tpot":1,"batch_sla":1,"tok_s_user":32.17,"ttft_s":0.1628,"gpus":34,"topology":"colocated","binding_constraint":"NONE"},"server":{"pattern_id":"hgx-8gpu","pattern_name":"Generic 8× GPU HGX Node","nodes":5,"gpus_installed":40,"gpus_per_node":8,"n_plus_1":false,"ram_gib_per_node":2048,"nvme_tb_per_node":15.36,"network_gbps":400,"nic_class_gbps":400,"t0_gib_per_gpu":49.8,"t1_gib_per_node":199.2,"t2_tb_per_node":1.55625,"t3":true,"node_kw":6.6,"it_kw":33,"facility_kw":46.2,"rack_u":40,"warnings":["facility_kw 46.2 exceeds 40.0 kW rack cap — emit 2 racks"]},"concurrency":{"lambda_rps":0.6667,"service_time_s":33.83,"mean":22.56,"design":34,"iterated":false},"memory":{"weight_gib":66.97,"kv_bytes_per_token":163840,"seq_reserved":16384,"kv_per_request_gib":2.5},"assumptions":["decode_eff=0.50 ESTIMATE","prefill_eff=0.55 ESTIMATE"],"rejected":[{"gpu_id":"h100-sxm","reason":"HBM"},{"gpu_id":"h100-sxm","reason":"HBM"},{"gpu_id":"h100-sxm","reason":"TPOT","sla_tok_s_user":30},{"gpu_id":"l40s","reason":"HBM"},{"gpu_id":"rtx-pro-6000-se","reason":"TPOT","sla_tok_s_user":30}],"sensitivity":[{"knob":"C*","low":"h200-sxm","base":"h200-sxm","high":"h200-sxm","sku_family_changed":false},{"knob":"S","low":"h200-sxm","base":"h200-sxm","high":"h200-sxm","sku_family_changed":false},{"knob":"h","low":"b200-sxm","base":"h200-sxm","high":"h200-sxm","sku_family_changed":false},{"knob":"R","low":"h200-sxm","base":"h200-sxm","high":"h200-sxm","sku_family_changed":false},{"knob":"precision","low":"h200-sxm","base":"h200-sxm","high":"h200-sxm","sku_family_changed":false}]}}