Speed test matrix
Olmo-3.1-32B-Instruct-DPO on RTX PRO 6000 Blackwell Server Edition 96GB
vllm · 0.30.1rc1.dev151+g73a78e6f1 · BF164 contexts (8K–59K) × 8 concurrency levels (1–128) · prefill at 8K, 16K, 32K, 59K, 64K
Hardware
- Type
- Discrete GPU
- GPU
- RTX PRO 6000 Blackwell Server Edition
- VRAM
- 96 GB
- OS
- linux
Engine
- Engine
- vllm
- Version
- 0.30.1rc1.dev151+g73a78e6f1
- Quantization
- BF16
- Backend
- cuda
- Repository
- github.com/vllm-project/vllm
- Build
- cuda-13.2
- Commit
73a78e6f1f38
Run
- Served model
- olmo
- Revision
- main
- Benchmark tool
- llm-inference-bench v0.7.6
- 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_rtxpro6k-allenai-vllm-73a78e6f1f38/bin/vllm" serve allenai/Olmo-3.1-32B-Instruct-DPO --served-model-name olmo --trust-remote-code --tensor-parallel-size 1 --enable-auto-tool-choice --tool-call-parser olmo3 --max-model-len 65536 --gpu-memory-utilization 0.84 --host 0.0.0.0 --port 8000 --api-key <redacted> --attention-backend FLASH_ATTN
Prefill
prompt tok/s by context length8K context5,594962 ms TTFT
16K context5,4011,961 ms TTFT
32K context5,2474,006 ms TTFT
59K context4,9707,766 ms TTFT
64K context4,9388,480 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 | 19.867 ms TTFT | 40.792 ms TTFT | 80.6145 ms TTFT | 146.6189 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity |
| 16K | 19.778 ms TTFT | 40.5104 ms TTFT | 80.0161 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 32K | 19.597 ms TTFT | 40.0151 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 59K | 19.2130 ms TTFT | 39.0189 ms TTFT | 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 | 5,594.0 | — | 962 ms | — | — | 1 | — | — |
| Prefill | 16K | 1 | Valid | 5,401.0 | — | 1,961 ms | — | — | 1 | — | — |
| Prefill | 32K | 1 | Valid | 5,247.0 | — | 4,006 ms | — | — | 1 | — | — |
| Prefill | 59K | 1 | Valid | 4,970.0 | — | 7,766 ms | — | — | 1 | — | — |
| Prefill | 64K | 1 | Valid | 4,938.0 | — | 8,480 ms | — | — | 1 | — | — |
| Sustained decode | 8K | 1 | Valid | 19.8 | 19.8 | 67 ms | 50.5 ms | 1.0 | 0 | 594 | 30.0 s |
| Sustained decode | 8K | 2 | Valid | 40.7 | 20.4 | 92 ms | 49.1 ms | 2.0 | 0 | 1,222 | 30.0 s |
| Sustained decode | 8K | 4 | Valid | 80.6 | 20.2 | 145 ms | 49.6 ms | 4.0 | 0 | 2,416 | 30.0 s |
| Sustained decode | 8K | 8 | Valid | 146.6 | 18.3 | 189 ms | 54.6 ms | 8.0 | 0 | 4,392 | 30.0 s |
| Sustained decode | 8K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 8K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 8K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 8K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 1 | Valid | 19.7 | 19.7 | 78 ms | 50.8 ms | 1.0 | 0 | 590 | 30.0 s |
| Sustained decode | 16K | 2 | Valid | 40.5 | 20.2 | 104 ms | 49.4 ms | 2.0 | 0 | 1,214 | 30.0 s |
| Sustained decode | 16K | 4 | Valid | 80.0 | 20.0 | 161 ms | 50.0 ms | 4.0 | 0 | 2,400 | 30.0 s |
| Sustained decode | 16K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 1 | Valid | 19.5 | 19.5 | 97 ms | 51.2 ms | 1.0 | 0 | 585 | 30.0 s |
| Sustained decode | 32K | 2 | Valid | 40.0 | 20.0 | 151 ms | 50.0 ms | 2.0 | 0 | 1,200 | 30.0 s |
| Sustained decode | 32K | 4 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| 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 | 59K | 1 | Valid | 19.2 | 19.2 | 130 ms | 52.0 ms | 1.0 | 0 | 577 | 30.0 s |
| Sustained decode | 59K | 2 | Valid | 39.0 | 19.5 | 189 ms | 51.3 ms | 2.0 | 0 | 1,170 | 30.0 s |
| Sustained decode | 59K | 4 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 59K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 59K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 59K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 59K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 59K | 128 | Over capacity | — | — | — | — | — | — | — | — |
Over capacity: not run because this many requests at this context would exceed the server's KV cache.