Skip to main content
Challenge

Build a Multi-LoRA Adapter Memory and Batch Sizing Calculator

Profile VRAM usage for serving concurrent LoRA adapters on open-weight base models using vLLM. Synthesize maximum concurrency limits and memory overheads using hosted Claude to generate deployment configuration.

EngineeringHosted by Vera
Challenge brief

What you are building

The core problem, expected build, and operating context for this challenge.

Profile VRAM usage for serving concurrent LoRA adapters on open-weight base models using vLLM. Synthesize maximum concurrency limits and memory overheads using hosted Claude to generate deployment configuration.

ML Deployment Specialist

Parse evaluation logs measuring VRAM footprint scaling per active LoRA adapter on local hardware.

Calculate maximum adapter concurrency before triggering out-of-memory errors or significant KV-cache eviction.

Prompt hosted Claude API to synthesize a deployment density report justifying adapter count limits.

Export a deployment configuration specifying max_loras and max_lora_rank for the vLLM engine.

Web dashboard showing projected VRAM usage per adapter and configuration export options.

JSON arrays containing simplified synthetic VRAM profile measurements for LoRA adapters across various ranks. Starter examples below are synthetic. They are not downloaded records.

vLLM open-model serving References vLLM multi-LoRA serving features and configuration flags.

anthropic-claude, fastapi, pydantic. Synthesizes multi-LoRA deployment strategies based on memory profiles. Hosted Claude API for technical synthesis; benchmarks focus on open-weight models.

Submit runnable source, pinned dependencies, setup commands, a working interface, example outputs, and a recorded end-to-end demo. Include tests and an action log.

Correctly computes VRAM usage per adapter rank and base model overhead.

Identifies hard limits on concurrent requests when serving heterogeneous LoRAs.

Generates ready-to-run vLLM multi-LoRA launch arguments.

Confines profiling strictly to specified open-weight model architectures.

```json [ { "input": { "base_model": "open-qwen-7b", "base_vram_gb": 14.5, "adapter_rank": 64, "vram_per_adapter_gb": 0.45, "total_vram_gb": 24, "target_adapters": 10 }, "expected_output": { "total_projected_vram_gb": 19, "viable_deployment": true, "vllm_launch_flag": "--enable-lora --max-loras 10 --max-lora-rank 64", "claude_rationale": "Base model and 10 adapters fit well within 24GB VRAM, leaving 5GB for KV cache and context generation." } }, { "input": { "base_model": "open-qwen-7b", "base_vram_gb": 14.5, "adapter_rank": 128, "vram_per_adapter_gb": 0.9, "total_vram_gb": 24, "target_adapters": 20 }, "expected_output": { "total_projected_vram_gb": 32.5, "viable_deployment": false, "vllm_launch_flag": null, "claude_rationale": "Projected VRAM (32.5GB) exceeds hardware limits. Reduce target adapters." } } ] ```

Evaluation applies exclusively to open-weight models. No access or extrapolation to proprietary Claude models. Use mock external writes. Require human review before any real deployment.

Rules

Participation guide

Evaluation applies exclusively to open-weight models. No access or extrapolation to proprietary Claude models. Use mock external writes and human review.

Delivery guide

How work is evaluated

Evaluation

Correctly computes VRAM usage per adapter rank and base model overhead. Identifies hard limits on concurrent requests when serving heterogeneous LoRAs. Generates ready-to-run vLLM multi-LoRA launch arguments. Confines profiling strictly to specified open-weight model architectures.

Submission format

Runnable source, pinned dependencies, setup commands, working interface, example outputs, recorded demo, tests, and action logs.

Datasets

Challenge datasets

Public datasets, plus the private datasets you have access to.

Evaluation rubric

How submissions are scored

These dimensions define what the evaluator checks and which criteria separate a passable run from a strong one.

Dimensions
4 scoring checks
Binary
1 pass or fail dimensions
Ordinal
3 scaled dimensions
Dimension 1

Complete workflow

Parse evaluation logs measuring VRAM footprint scaling per active LoRA adapter on local hardware. Calculate maximum adapter concurrency before triggering out-of-memory errors or significant KV-cache eviction. Prompt hosted Claude API to synthesize a deployment density report justifying adapter count limits. Export a deployment configuration specifying max_loras and max_lora_rank for the vLLM engine.

Score scale
012
Score 0

Missing or incorrect.

Score 1

Partly complete, with documented gaps.

Score 2

Complete, with reproducible evidence.

Dimension 2

Correctness and evidence

Correctly computes VRAM usage per adapter rank and base model overhead. Identifies hard limits on concurrent requests when serving heterogeneous LoRAs. Generates ready-to-run vLLM multi-LoRA launch arguments. Confines profiling strictly to specified open-weight model architectures.

Score scale
012
Score 0

Missing or incorrect.

Score 1

Partly complete, with documented gaps.

Score 2

Complete, with reproducible evidence.

Dimension 3

Review interface

Web dashboard showing projected VRAM usage per adapter and configuration export options.

Score scale
012
Score 0

Missing or incorrect.

Score 1

Partly complete, with documented gaps.

Score 2

Complete, with reproducible evidence.

Dimension 4

Safe execution

Evaluation applies exclusively to open-weight models. No access or extrapolation to proprietary Claude models.

Binary check

This dimension contributes its full weight only when the submission satisfies the requirement. Partial credit is not awarded.

Learning goals

What you should walk away with

  • Parse evaluation logs measuring VRAM footprint scaling per active LoRA adapter on local hardware.

  • Calculate maximum adapter concurrency before triggering out-of-memory errors or significant KV-cache eviction.

  • Prompt hosted Claude API to synthesize a deployment density report justifying adapter count limits.

  • Export a deployment configuration specifying max_loras and max_lora_rank for the vLLM engine.

Resources and assets

Reference links and supporting material

Dataset notes

JSON arrays containing simplified synthetic VRAM profile measurements for LoRA adapters across various ranks. Supplied starter examples are synthetic, not source extracts.

Challenge setup

Configuration summary for this challenge.

Challenge input

Input details are not configured.

Anthropic Claude

LLM for code generation & more

Evaluated output

No output checks are configured.

Evaluation checks
  • Parse evaluation logs measuring VRAM footprint scaling per active LoRA adapter on local hardware. Calculate...
  • Correctly computes VRAM usage per adapter rank and base model overhead. Identifies hard limits on concurren...
  • Web dashboard showing projected VRAM usage per adapter and configuration export options.
Configured evaluation evidence
  • 2 public reference cases
Configured runtime
  • 1 configured tool

Summary shows the first task, up to three tools, and up to three evidence items. Open the technical recipe to view all configured items.

View technical recipe

Configured tools

Action Space
  • Anthropic Claude · Optional

Evaluation contract

  • Complete workflow · Weight 40
  • Correctness and evidence · Weight 30
  • Review interface · Weight 20
  • Safe execution · Weight 10

Reference cases

  • 2 public reference cases

Workflow tasks

No workflow tasks are configured.

Recipe freeze marker

No recipe freeze time is recorded.

Frequently Asked Questions about Build a Multi-LoRA Adapter Memory and Batch Sizing Calculator