Experiments on Joulie

CPU-Only Benchmark

Mon, 01 Jan 0001 00:00:00 +0000

This page reports results from the CPU-only cluster benchmark experiment:

experiments/01-cpu-only-benchmark/

Scope

The benchmark compares three baselines on a pure CPU cluster:

A: simulator only (Joulie-free)
B: Joulie with static partition policy
C: Joulie with queue-aware policy

It evaluates energy and throughput under real Kubernetes scheduling with KWOK nodes and simulated power control.

Experimental setup

Cluster and nodes

kind control-plane + worker (real control plane)
8 managed KWOK nodes - CPU only, no GPUs
Workload pods target KWOK nodes via selector + toleration

Node inventory

Node prefix	Count	CPU model	CPU cores	RAM
kwok-cpu-highcore	2	AMD EPYC 9965 192-Core	384 (2×192)	1536 GiB
kwok-cpu-highfreq	2	AMD EPYC 9375F 32-Core	64 (2×32)	770 GiB
kwok-cpu-intensive	4	AMD EPYC 9655 96-Core	192 (2×96)	1536 GiB

Total: 8 nodes, 2304 CPU cores, 0 GPUs.

Heterogeneous GPU Cluster Benchmark

Mon, 01 Jan 0001 00:00:00 +0000

This page reports results from the heterogeneous GPU cluster benchmark experiment:

experiments/02-heterogeneous-benchmark/

Scope

The benchmark compares three baselines on a heterogeneous cluster mixing 5 distinct GPU hardware families plus CPU-only nodes:

A: simulator only (Joulie-free)
B: Joulie with static partition policy
C: Joulie with queue-aware policy

Experimental setup

Cluster and nodes

kind control-plane + worker (real control plane)
41 managed KWOK nodes: 33 GPU nodes + 8 CPU-only nodes
Workload pods target KWOK nodes via selector + toleration

Node inventory - detailed cluster composition

This is a heterogeneous GPU cluster mixing 5 distinct GPU hardware families across 33 GPU nodes, plus 8 CPU-only nodes.

Homogeneous H100 NVL Benchmark

Mon, 01 Jan 0001 00:00:00 +0000

This page reports results from the homogeneous H100 NVL cluster benchmark experiment:

experiments/03-homogeneous-h100-benchmark/

Scope

The benchmark compares three baselines on a homogeneous cluster of NVIDIA H100 NVL GPU nodes plus CPU-only nodes:

A: simulator only (Joulie-free)
B: Joulie with static partition policy
C: Joulie with queue-aware policy

This experiment is designed for a direct comparison with the heterogeneous benchmark: same 41 total nodes, same workload configuration, but all GPU nodes are a single family (H100 NVL) instead of 5 different families.