Rebellions RebelServer
Overview
Performance Metrics
| Precision | Peak (PFLOPS) | Per GPU (TFLOPS) | TFLOPS/W |
|---|---|---|---|
| FP16 | 8.2 | 1024.0 | — |
| FP8 | 16.4 | 2048.0 | — |
All figures are dense. Vendors commonly headline the sparse number, which is twice the dense one.
Configuration
- Accelerator
- Rebel100
- Count
- 8
- Memory per GPU
- 144 GB
- Bandwidth per GPU
- 4.8 TB/s
Power & Efficiency
- Aggregate Power
- 7.0 kW
- TDP per GPU
- 600 W
- FP8 Efficiency
- 2.34 TFLOPS/W
- Aggregate Bandwidth
- 38.4 TB/s
System Details
Interconnect
Backend 4 x 400G QSFP112-DD; 1 x 100G 2-port QSFP56; 1 x 10G/25G 2-port SFP28 (OCP 3.0)
Notes
A 5U server holding eight Rebel100 cards, driven by two AMD EPYC 9355 processors with 1.5 TB of DDR5 host memory across 24 DIMMs, drawing 4 kW typically and 7 kW at maximum, and weighing 45.3 kg gross. Accelerator memory is 1.152 TB of HBM3E across the eight cards at 38.4 TB/s. Compute is 16.384 PFLOPS of FP8 and 8.192 PFLOPS of FP16, dense — Rebellions labels the Rebel100 figures "Compute (Dense)" on its own homepage. Note that Rebellions' server page states "up to 2 PFLOPS FP8 performance with 8 RebelCards per server"; that 2 PFLOPS is the per-card figure rather than the per-server one, as its own rack and pod pages confirm, since 32 cards give 65.5 PFLOPS and 256 give 524.3. Note also that the 1.5 TB on that page is DDR5 host memory, not accelerator memory.