[rhaiis] Add named workload aliases, prefix-cache toggles, and composite benchmark presets by hp2419 · Pull Request #183 · openshift-psap/forge

hp2419 · 2026-08-24T16:08:25Z

Summary

Add human-readable workload aliases (balanced, variable, summarization, long-context, ultra-long-context, multi-turn, heavy-heterogeneous) that mirror profile1–7 for better readability in presets and CLI usage.
Add prefix-cache-on/off feature toggle presets to enable A/B comparison of vLLM prefix caching behavior.
Add composite benchmark presets for common test scenarios:
- benchmark-standard — balanced + variable
- benchmark-long-context — long-context + ultra-long-context
- benchmark-full-sweep — all workloads
- benchmark-multi-turn with prefix-on/prefix-off variants
- benchmark-heterogeneous

Motivation

The numbered profile names (profile1–7) are kept for model-furnace compatibility, but they're hard to remember. Named aliases let users write benchmark-multi-turn-prefix-on + llama-70b + nvidia instead of juggling profile numbers and manual vllm arg overrides.

Test plan

Verify named workload aliases resolve to the same config as their profileN counterparts
Verify prefix-cache-on preset correctly passes --enable-prefix-caching to vLLM
Verify composite presets resolve and expand correctly via runtime_config
Run ci-test to confirm no regressions

Summary by CodeRabbit

New Features
- Added five benchmark presets for standard, long-context, multi-turn, and heterogeneous workloads.
- Added readable aliases for seven workload profiles.
- Added presets to enable or disable prefix caching for supported workloads.

…ite benchmark presets Add human-readable workload aliases (balanced, variable, summarization, long-context, ultra-long-context, multi-turn, heavy-heterogeneous) that mirror profile1-7 for better readability in presets and CLI usage. Add prefix-cache-on/off feature toggle presets to enable A/B comparison of vLLM prefix caching behavior. Add composite benchmark presets for common test scenarios: - benchmark-standard (balanced + variable) - benchmark-long-context (long-context + ultra-long-context) - benchmark-full-sweep (all workloads) - benchmark-multi-turn with prefix-on/off variants - benchmark-heterogeneous

openshift-ci · 2026-08-24T16:08:29Z

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coderabbitai · 2026-08-24T16:08:35Z

📝 Walkthrough

Walkthrough

Adds named workload aliases, prefix-caching toggle presets, and five benchmark presets. The benchmark presets reference workload profiles and compose the prefix-caching presets for multi-turn workloads.

Changes

Workload and benchmark presets

Layer / File(s)	Summary
Named workload configurations `projects/rhaiis/orchestration/presets.d/presets.yaml`	Adds seven readable workload aliases for `profile1` through `profile7`.
Workload and prefix-caching presets `projects/rhaiis/orchestration/presets.d/presets.yaml`	Adds presets that enable or disable the vLLM prefix-caching argument.
Benchmark preset compositions `projects/rhaiis/orchestration/presets.d/benchmarks.yaml`	Adds five benchmark presets for standard, long-context, multi-turn prefix-caching, and heterogeneous workloads.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: 🟡 Moderate · up to 3d4d0

The new multi-workload benchmark presets can fail before execution because their workload lists are passed in an unsupported nested form. The CLI should be updated to handle multiple workloads correctly before this PR is merged.

Suggested reviewers: harshith-umesh, sacherukuri

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main changes: named workload aliases, prefix-cache toggles, and composite benchmark presets for RHAIIS.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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hp2419 · 2026-09-02T16:03:57Z

@Harshith-umesh please review this

Harshith-umesh · 2026-09-02T16:42:48Z

+  rates: [1,50,100,200,300]
+  max_seconds: 450
+
+variable:


this is also heterogeneous, maybe call this decode-heterogeneous

Harshith-umesh · 2026-09-02T16:45:37Z

+# ── Feature toggles ─────────────────────────────────────────
+
+prefix-cache-on:
+  rhaiis.engines.vllm.args.no-enable-prefix-caching: false


why are we setting both? one is enough

…on preset

Harshith-umesh · 2026-09-02T16:47:01Z

+  - benchmark
+  tests.rhaiis.workload_key:
+  - balanced
+  - variable


let's keep benchmark-standard as balanced and long-context

Harshith-umesh · 2026-09-02T16:48:10Z

+  - multi-turn
+  - heavy-heterogeneous
+
+benchmark-multi-turn:


why do we need this? we have the below 2 presets.

…ppings Named aliases now live only in the preset layer, pointing to the existing profile keys. Removes the duplicated workload definitions from workloads.yaml to keep a single source of truth.

Harshith-umesh · 2026-09-02T16:49:02Z

+  - long-context
+  - ultra-long-context
+
+benchmark-full-sweep:


we don't need this

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Actionable comments posted: 1

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Inline comments:
In `@projects/rhaiis/orchestration/presets.d/benchmarks.yaml`:
- Around line 13-15: Update cli.test() to recognize list-valued
tests.rhaiis.workload_key presets and pass them as a flat list[str] to
test_phase.run(), preserving per-workload overrides; alternatively route them
through the existing multi-workload execution path so do_test() receives
individual workload keys rather than a nested list.

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📥 Commits

Reviewing files that changed from the base of the PR and between 6295ddd and 3d4d0b8.

📒 Files selected for processing (2)

projects/rhaiis/orchestration/presets.d/benchmarks.yaml
projects/rhaiis/orchestration/presets.d/presets.yaml

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Harshith-umesh · 2026-09-02T17:00:54Z




 profile1:


@hp2419 instead of having both profile1 and the named aliases, let's say something like profile1-balanced only. so lines 45 and 67 can be merged into one.

Harshith-umesh · 2026-09-02T17:01:13Z

+# ── Feature toggles ─────────────────────────────────────────
+
+prefix-cache-on:
+  rhaiis.engines.vllm.args.enable-prefix-caching: true


good addition!

Harshith-umesh · 2026-09-02T17:03:09Z

+  extends:
+  - benchmark
+  tests.rhaiis.workload_key:
+  - profile4


this will create confusion, it's called long-context but it also has the extra long context profile in it. let's remove this for now.

ssaketh-ch · 2026-09-02T18:09:17Z

+  extends:
+  - benchmark
+  - prefix-cache-on
+  tests.rhaiis.workload_key: profile6


Since these presets use profile6, can we update the profile6 workload definition in projects/rhaiis/orchestration/config.d/workloads.yaml?

Spec: ISL/OSL 128/128 x5 turns (prefix_tokens=512, prefix_count=10000), concurrency 1/32/64/128/256.

profile6: data: "prompt_tokens=128,output_tokens=128,turns=5,prefix_tokens=512,prefix_count=10000" rates: [1, 32, 64, 128, 256] max_seconds: 450

Harshith-umesh reviewed Sep 2, 2026

View reviewed changes

HARIKA POTHINA added 2 commits September 2, 2026 12:46

[rhaiis] Rename variable workload alias to decode-heterogeneous

944d407

[rhaiis] Remove redundant no-enable-prefix-caching from prefix-cache-…

05045ba

…on preset

Harshith-umesh reviewed Sep 2, 2026

View reviewed changes

[rhaiis] Remove duplicated workload aliases, use preset-only named ma…

7daf761

…ppings Named aliases now live only in the preset layer, pointing to the existing profile keys. Removes the duplicated workload definitions from workloads.yaml to keep a single source of truth.

Harshith-umesh reviewed Sep 2, 2026

View reviewed changes

HARIKA POTHINA added 3 commits September 2, 2026 12:49

[rhaiis] Update benchmark-standard to use balanced + long-context

52fc7c6

[rhaiis] Remove redundant benchmark-multi-turn preset

9061915

[rhaiis] Remove benchmark-full-sweep preset

3d4d0b8

coderabbitai Bot reviewed Sep 2, 2026

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Comment thread projects/rhaiis/orchestration/presets.d/benchmarks.yaml

Harshith-umesh reviewed Sep 2, 2026

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ssaketh-ch reviewed Sep 2, 2026

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Summary

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