Speed test matrix
Olmo-3.1-32B-Think on RTX PRO 6000 Blackwell Server Edition 96GB
vllm · 0.30.1rc1.dev452+g73a583112 · 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.dev452+g73a583112
- Quantization
- BF16
- Backend
- cuda
- Repository
- github.com/vllm-project/vllm
- Build
- cuda-13.2
- Commit
73a5831127a9
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-73a5831127a9/bin/vllm" serve allenai/Olmo-3.1-32B-Think --served-model-name olmo --trust-remote-code --tensor-parallel-size 1 --reasoning-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 context5,602964 ms TTFT
16K context5,3871,969 ms TTFT
32K context5,2314,021 ms TTFT
59K context4,9657,779 ms TTFT
64K context4,9268,503 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 | 19.873 ms TTFT | 40.794 ms TTFT | 80.6148 ms TTFT | 146.8193 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity |
| 16K | 19.780 ms TTFT | 40.4131 ms TTFT | 79.7192 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 32K | 19.5104 ms TTFT | 40.0161 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 59K | 19.2146 ms TTFT | 39.0207 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 | 5,602.0 | — | 964 ms | — | — | 1 | — | — |
| Prefill | 16K | 1 | Valid | 5,387.0 | — | 1,969 ms | — | — | 1 | — | — |
| Prefill | 32K | 1 | Valid | 5,231.0 | — | 4,021 ms | — | — | 1 | — | — |
| Prefill | 59K | 1 | Valid | 4,965.0 | — | 7,779 ms | — | — | 1 | — | — |
| Prefill | 64K | 1 | Valid | 4,926.0 | — | 8,503 ms | — | — | 1 | — | — |
| Sustained decode | 8K | 1 | Valid | 19.8 | 19.8 | 73 ms | 50.6 ms | 1.0 | 0 | 593 | 30.0 s |
| Sustained decode | 8K | 2 | Valid | 40.7 | 20.3 | 94 ms | 49.1 ms | 2.0 | 0 | 1,222 | 30.0 s |
| Sustained decode | 8K | 4 | Valid | 80.6 | 20.1 | 148 ms | 49.7 ms | 4.0 | 0 | 2,416 | 30.0 s |
| Sustained decode | 8K | 8 | Valid | 146.8 | 18.3 | 193 ms | 54.6 ms | 8.0 | 0 | 4,400 | 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 | 80 ms | 50.8 ms | 1.0 | 0 | 590 | 30.0 s |
| Sustained decode | 16K | 2 | Valid | 40.4 | 20.2 | 131 ms | 49.5 ms | 2.0 | 0 | 1,212 | 30.0 s |
| Sustained decode | 16K | 4 | Valid | 79.7 | 19.9 | 192 ms | 50.2 ms | 4.0 | 0 | 2,388 | 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 | 104 ms | 51.3 ms | 1.0 | 0 | 586 | 30.0 s |
| Sustained decode | 32K | 2 | Valid | 40.0 | 20.0 | 161 ms | 50.1 ms | 2.0 | 0 | 1,198 | 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 | 146 ms | 52.0 ms | 1.0 | 0 | 576 | 30.0 s |
| Sustained decode | 59K | 2 | Valid | 39.0 | 19.5 | 207 ms | 51.3 ms | 2.0 | 0 | 1,168 | 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.