Speed test matrix
Laguna-XS-2.1 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
"$HOME/env_h200-poolside-sglang/bin/sglang" serve --model-path poolside/Laguna-XS-2.1 --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 context34.6K237 ms TTFT
16K context34.9K464 ms TTFT
32K context32.3K996 ms TTFT
64K context26.5K2,423 ms TTFT
128K context19K6,739 ms TTFT
251K context12.4K20,350 ms TTFT
256K context12.3K20,899 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 | 178.869 ms TTFT | 203.092 ms TTFT | 549.296 ms TTFT | 692.5123 ms TTFT | 1,275.4201 ms TTFT | 1,832.7344 ms TTFT | Over capacity | Over capacity |
| 16K | 175.894 ms TTFT | 106.5132 ms TTFT | 451.8125 ms TTFT | 816.5190 ms TTFT | 1,268.8322 ms TTFT | Over capacity | Over capacity | Over capacity |
| 32K | 170.6119 ms TTFT | 204.9137 ms TTFT | 505.1204 ms TTFT | 579.2357 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity |
| 64K | 161.8156 ms TTFT | 197.6303 ms TTFT | 448.0395 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 128K | 146.3256 ms TTFT | 246.4445 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 251K | 123.3473 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 | 34.6K | — | 237 ms | — | — | 1 | — | — |
| Prefill | 16K | 1 | Valid | 34.9K | — | 464 ms | — | — | 1 | — | — |
| Prefill | 32K | 1 | Valid | 32.3K | — | 996 ms | — | — | 1 | — | — |
| Prefill | 64K | 1 | Valid | 26.5K | — | 2,423 ms | — | — | 1 | — | — |
| Prefill | 128K | 1 | Valid | 19K | — | 6,739 ms | — | — | 1 | — | — |
| Prefill | 251K | 1 | Valid | 12.4K | — | 20,350 ms | — | — | 1 | — | — |
| Prefill | 256K | 1 | Valid | 12.3K | — | 20,899 ms | — | — | 1 | — | — |
| Sustained decode | 8K | 1 | Valid | 178.8 | 179.3 | 69 ms | 5.6 ms | 1.0 | 1 | 5,364 | 30.0 s |
| Sustained decode | 8K | 2 | Valid | 203.0 | 101.6 | 92 ms | 9.8 ms | 3.0 | 0 | 6,090 | 30.0 s |
| Sustained decode | 8K | 4 | Valid | 549.2 | 137.8 | 96 ms | 7.3 ms | 4.0 | 4 | 16,476 | 30.0 s |
| Sustained decode | 8K | 8 | Valid | 692.5 | 86.9 | 123 ms | 11.5 ms | 12.0 | 0 | 20,776 | 30.0 s |
| Sustained decode | 8K | 16 | Valid | 1,275.4 | 78.6 | 201 ms | 12.7 ms | 18.4 | 0 | 38,256 | 30.0 s |
| Sustained decode | 8K | 32 | Valid | 1,832.7 | 57.1 | 344 ms | 17.5 ms | 41.6 | 0 | 54,977 | 30.0 s |
| Sustained decode | 8K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 8K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 1 | Valid | 175.8 | 176.4 | 94 ms | 5.7 ms | 1.0 | 1 | 5,273 | 30.0 s |
| Sustained decode | 16K | 2 | Valid | 106.5 | 53.4 | 132 ms | 18.7 ms | 34.0 | 0 | 3,194 | 30.0 s |
| Sustained decode | 16K | 4 | Valid | 451.8 | 110.9 | 125 ms | 9.0 ms | 5.1 | 0 | 13,552 | 30.0 s |
| Sustained decode | 16K | 8 | Valid | 816.5 | 102.6 | 190 ms | 9.8 ms | 8.0 | 0 | 24,488 | 30.0 s |
| Sustained decode | 16K | 16 | Valid | 1,268.8 | 77.5 | 322 ms | 12.9 ms | 16.3 | 0 | 38,064 | 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 | 170.6 | 171.4 | 119 ms | 5.8 ms | 1.0 | 1 | 5,118 | 30.0 s |
| Sustained decode | 32K | 2 | Valid | 204.9 | 97.2 | 137 ms | 10.3 ms | 10.5 | 0 | 6,148 | 30.0 s |
| Sustained decode | 32K | 4 | Valid | 505.1 | 126.0 | 204 ms | 7.9 ms | 4.0 | 4 | 15,153 | 30.0 s |
| Sustained decode | 32K | 8 | Valid | 579.2 | 72.7 | 357 ms | 13.8 ms | 12.0 | 0 | 17,376 | 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 | 161.8 | 162.8 | 156 ms | 6.1 ms | 1.0 | 1 | 4,853 | 30.0 s |
| Sustained decode | 64K | 2 | Valid | 197.6 | 95.9 | 303 ms | 10.4 ms | 8.2 | 0 | 5,926 | 30.0 s |
| Sustained decode | 64K | 4 | Valid | 448.0 | 107.9 | 395 ms | 9.3 ms | 4.2 | 0 | 13,440 | 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 | 146.3 | 147.9 | 256 ms | 6.8 ms | 1.0 | 1 | 4,389 | 30.0 s |
| Sustained decode | 128K | 2 | Valid | 246.4 | 121.9 | 445 ms | 8.2 ms | 2.0 | 0 | 7,393 | 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 | 123.3 | 125.7 | 473 ms | 8.0 ms | 1.0 | 1 | 3,699 | 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.