Speed test matrix
Laguna-XS.2 on H200 NVL 141GB
sglang · 0.5.6.post3.dev9269+g834400705 · BF166 contexts (8K–251K) × 8 concurrency levels (1–128) · prefill at 8K, 16K, 32K, 64K, 128K, 251K, 256K
Hardware
- Type
- Discrete GPU
- GPU
- H200 NVL
- VRAM
- 141 GB
- OS
- linux
Engine
- Engine
- sglang
- Version
- 0.5.6.post3.dev9269+g834400705
- Quantization
- BF16
- Backend
- cuda
- Repository
- github.com/sgl-project/sglang
- Build
- cuda-13.2
- Commit
834400705f2d
Run
- Served model
- poolside
- Revision
- main
- Benchmark tool
- llm-inference-bench v0.4.29
- Decode test
- Fixed duration
- Prefill mode
- Measured during decode warm-up
- Time per measurement
- 30 s
- Max output
- 4,096 tokens
Launch command
env SGLANG_ALLOW_OVERWRITE_LONGER_CONTEXT_LEN=1 "$HOME/env_h200-poolside-sglang/bin/sglang" serve --model-path poolside/Laguna-XS.2 --served-model-name poolside --trust-remote-code --tp 1 --reasoning-parser poolside_v1 --tool-call-parser poolside_v1 --context-length 262144 --mem-fraction-static 0.851907 --enable-metrics --host 0.0.0.0 --port 8000 --api-key <redacted>
Prefill
prompt tok/s by context length8K context34.8K236 ms TTFT
16K context34.7K467 ms TTFT
32K context32.5K991 ms TTFT
64K context26.4K2,436 ms TTFT
128K context19.1K6,723 ms TTFT
251K context12.4K20,307 ms TTFT
256K context12.3K20,892 ms TTFT
Sustained decode
total tok/s · rows are context length, columns are simultaneous requests| Context | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 |
|---|---|---|---|---|---|---|---|---|
| 8K | 176.465 ms TTFT | 201.895 ms TTFT | 544.9102 ms TTFT | 690.6128 ms TTFT | 1,286.0193 ms TTFT | 1,861.9355 ms TTFT | Over capacity | Over capacity |
| 16K | 173.691 ms TTFT | 106.8105 ms TTFT | 451.1144 ms TTFT | 821.0191 ms TTFT | 1,270.9379 ms TTFT | Over capacity | Over capacity | Over capacity |
| 32K | 168.4122 ms TTFT | 203.8164 ms TTFT | 501.4241 ms TTFT | 576.1410 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity |
| 64K | 160.0165 ms TTFT | 194.2263 ms TTFT | 440.6392 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 128K | 144.9265 ms TTFT | 244.2417 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 251K | 122.2483 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
Over capacity: not run because this many requests at this context would exceed the server's KV cache.
TTFT is measured after the benchmark warms the server's prompt cache, so it mostly excludes prefill.
All measurements
Latencies are medians. Total tok/s is output across all simultaneous requests.| Phase | Context | Requests at once | Status | Total tok/s | Per request tok/s | TTFT | Time between tokens | Average active requests | Completed requests | Output tokens | Measured for |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Prefill | 8K | 1 | Valid | 34.8K | — | 236 ms | — | — | 1 | — | — |
| Prefill | 16K | 1 | Valid | 34.7K | — | 467 ms | — | — | 1 | — | — |
| Prefill | 32K | 1 | Valid | 32.5K | — | 991 ms | — | — | 1 | — | — |
| Prefill | 64K | 1 | Valid | 26.4K | — | 2,436 ms | — | — | 1 | — | — |
| Prefill | 128K | 1 | Valid | 19.1K | — | 6,723 ms | — | — | 1 | — | — |
| Prefill | 251K | 1 | Valid | 12.4K | — | 20,307 ms | — | — | 1 | — | — |
| Prefill | 256K | 1 | Valid | 12.3K | — | 20,892 ms | — | — | 1 | — | — |
| Sustained decode | 8K | 1 | Valid | 176.4 | 176.9 | 65 ms | 5.7 ms | 1.0 | 1 | 5,293 | 30.0 s |
| Sustained decode | 8K | 2 | Valid | 201.8 | 101.0 | 95 ms | 9.9 ms | 3.0 | 0 | 6,054 | 30.0 s |
| Sustained decode | 8K | 4 | Valid | 544.9 | 136.2 | 102 ms | 7.3 ms | 4.0 | 4 | 16,344 | 30.0 s |
| Sustained decode | 8K | 8 | Valid | 690.6 | 86.6 | 128 ms | 11.5 ms | 12.0 | 0 | 20,720 | 30.0 s |
| Sustained decode | 8K | 16 | Valid | 1,286.0 | 79.3 | 193 ms | 12.6 ms | 18.1 | 0 | 38,576 | 30.0 s |
| Sustained decode | 8K | 32 | Valid | 1,861.9 | 58.0 | 355 ms | 17.2 ms | 41.1 | 0 | 55,840 | 30.0 s |
| Sustained decode | 8K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 8K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 1 | Valid | 173.6 | 174.2 | 91 ms | 5.7 ms | 1.0 | 1 | 5,206 | 30.0 s |
| Sustained decode | 16K | 2 | Valid | 106.8 | 53.6 | 105 ms | 18.7 ms | 34.0 | 0 | 3,202 | 30.0 s |
| Sustained decode | 16K | 4 | Valid | 451.1 | 110.9 | 144 ms | 9.0 ms | 5.1 | 0 | 13,532 | 30.0 s |
| Sustained decode | 16K | 8 | Valid | 821.0 | 102.9 | 191 ms | 9.7 ms | 8.0 | 0 | 24,624 | 30.0 s |
| Sustained decode | 16K | 16 | Valid | 1,270.9 | 77.7 | 379 ms | 12.9 ms | 16.3 | 0 | 38,128 | 30.0 s |
| Sustained decode | 16K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 1 | Valid | 168.4 | 169.3 | 122 ms | 5.9 ms | 1.0 | 1 | 5,052 | 30.0 s |
| Sustained decode | 32K | 2 | Valid | 203.8 | 96.7 | 164 ms | 10.3 ms | 10.5 | 0 | 6,114 | 30.0 s |
| Sustained decode | 32K | 4 | Valid | 501.4 | 125.3 | 241 ms | 8.0 ms | 4.0 | 4 | 15,039 | 30.0 s |
| Sustained decode | 32K | 8 | Valid | 576.1 | 72.4 | 410 ms | 13.8 ms | 12.0 | 0 | 17,280 | 30.0 s |
| Sustained decode | 32K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 1 | Valid | 160.0 | 161.0 | 165 ms | 6.2 ms | 1.0 | 1 | 4,799 | 30.0 s |
| Sustained decode | 64K | 2 | Valid | 194.2 | 94.2 | 263 ms | 10.6 ms | 8.4 | 0 | 5,824 | 30.0 s |
| Sustained decode | 64K | 4 | Valid | 440.6 | 106.1 | 392 ms | 9.4 ms | 4.3 | 0 | 13,216 | 30.0 s |
| Sustained decode | 64K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 1 | Valid | 144.9 | 146.4 | 265 ms | 6.8 ms | 1.0 | 1 | 4,345 | 30.0 s |
| Sustained decode | 128K | 2 | Valid | 244.2 | 119.5 | 417 ms | 8.4 ms | 2.0 | 0 | 7,326 | 30.0 s |
| Sustained decode | 128K | 4 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 251K | 1 | Valid | 122.2 | 125.1 | 483 ms | 8.0 ms | 1.0 | 1 | 3,667 | 30.0 s |
| Sustained decode | 251K | 2 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 251K | 4 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 251K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 251K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 251K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 251K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 251K | 128 | Over capacity | — | — | — | — | — | — | — | — |
Over capacity: not run because this many requests at this context would exceed the server's KV cache.