[lab] added cmu15-213 "data lab"

[jq-huang]

Description

Added "Data Lab" from CMU 15-213 course, used the self-study handout, see at csapp lab assignments

Changes

• Added the lab

Testing

Test the lab with qwen-plus model:

 "config": {
"model": "openai/qwen-plus",
"max_steps": 50,
"max_cost": 5.0,
"timestamp": "2026-01-10T03:33:24.372032"
}

It reached the limited steps and got the result:

Limit reached: Step limit reached: 50/50
Running evaluation...
Evaluation failed on attempt 1, retrying...
Retry attempt 2/3...
Evaluation failed on attempt 2, retrying...
Retry attempt 3/3...
Copying output files to outputs/run_20260110_033009/files/cmu_15_213_data_lab
✗ Completed in 195.0s (50 steps, $0.0000)
✗ limit_reached | $0.0000
======================================================================
Pass rate: 0/1 (0.0%)
Total cost: $0.0000
Results: outputs/run_20260110_033009
======================================================================

=== Evaluating Data Lab ===
Step 0: Verifying protected files integrity...
Protected files integrity verified
Step 1: Checking coding rule compliance with dlc...
dlc warnings/errors:
dlc:bits.c:167:isTmax: Illegal operator (<<)
dlc check passed
Step 2: Building btest...
btest compiled successfully
Step 3: Running btest...
btest output:
Score Rating Errors Function
1 1 0 bitXor
1 1 0 tmin
1 1 0 isTmax
2 2 0 allOddBits
2 2 0 negate
3 3 0 isAsciiDigit
3 3 0 conditional
3 3 0 isLessOrEqual
4 4 0 logicalNeg
0 4 1 howManyBits
0 4 1 floatScale2
0 4 1 floatFloat2Int
0 4 1 floatPower2
Total points: 20/36
FAIL: btest detected errors in some functions

Checklist

• Tests pass locally
• Code follows project style guidelines
• Documentation updated (if needed)

[Copilot]

Pull request overview

This PR adds the CMU 15-213 "Data Lab" programming assignment to the courselab_bench benchmark suite. The Data Lab is a well-known assignment from Carnegie Mellon's Introduction to Computer Systems course that challenges students to implement bit-level manipulation functions and floating-point operations with restricted operators.

Changes:

• Added course registration for CMU 15-213 to courses.json
• Added complete Data Lab assignment with task description, starter files, build system, and evaluation scripts
• Configured Docker environment with necessary 32-bit compilation support and Perl dependencies

Reviewed changes

Copilot reviewed 18 out of 19 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
courses.json	Registers the CMU 15-213 course in the benchmark system
task.md	Provides detailed instructions and documentation for the Data Lab
starter_files/.c/.h	Source files including student starter code, test harness, and utility programs
starter_files/dlc	Binary compiler for checking coding rule compliance
starter_files/.pl/.pm	Perl driver scripts for automated grading
starter_files/Makefile	Build system for compiling the test harness
preprocess.sh	Setup script that installs dependencies and validates file integrity
evaluate.sh	Evaluation script that runs dlc checks and btest for correctness
config.json	Configuration defining the lab environment and file mappings

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[tareknaser]

Thank you. It looks good to me