[Final Project] Performance Competition (due: 6/19)

[AnHaechan]

Performance Competition.

• instruction
  • https://docs.google.com/presentation/d/1SqtU-Cn60Sd1jkbO0OSsRYKPMIkul0eZoYG9KpMugFE/edit#slide=id.g8085bd6ec8_44_0
  • Since your solution will be linked with some driver, you need to follow the LP64D ABI, which is the default ABI of RV64G ISA.
    • RVG Calling Convention: 18.2 of https://riscv.org/wp-content/uploads/2015/01/riscv-calling.pdf
    • Godbolt's reference solution to exotic_arguments.c: https://godbolt.org/z/bzn6v7Pf8
  • Use la pseudo instruction instead of HI20 and LO12 pair: [Final Project] Performance Competition (substituting final exam, due: 8th of July) #168 (comment)
  • Check that your code does not have unaligned memory access.
  • The stack pointer should always be kept 16-byte aligned. (p3 of https://riscv.org/wp-content/uploads/2015/01/riscv-calling.pdf)
  • Also refer to Tips on homework assignments #467 and the model solution.
• self grader: https://github.com/kaist-cp/kecc-public#run-benchmark-for-performance-competition
  • It will build your compiler, build benchmark codes, run them, and measure the elapsed CPU cycles. The average is your score (lower is better).
• submission: run ./scripts/make-submissions.sh and then submit final.zip.
  • There is 10 minute timeout for each submission.
  • https://gg.kaist.ac.kr/assignment/99/
• leaderboard
  • Leaderboard
  • The next score on the leaderboard will be updated to min(# of cycle on the leaderboard, # of cycle of the last success submission on gg).
• due: 6/19 23:59:59 (KST = UTC+9)

[CuriousLocky]

Is the online test code same as the self grader?

[Lee-Janggun]

@CuriousLocky it is the same, but the online grader runs the code on actual RISC-V hardware, while the provided development machines run on QEMU. This may lead to some bugs not found on QEMU, so please read the instructions above carefully.

[CuriousLocky]

@Lee-Janggun On the slide it says If any of the results are wrong, you’ll be disqualified. Does it mean the score for that specific round is disqualified or there is no second chance of fixing it?

[Lee-Janggun]

@CuriousLocky Ah, it means that the results for that specific submission is disqualified. You are free to re-submit and try again.

[CuriousLocky]

I submitted my code to gg last night, and it shows as successful. But I cannot see my score on the leaderboard so far. Is there anything I should do other than simply uploading final.zip?

[AnHaechan]

@CuriousLocky It is now updated. Our automatic leaderboard updater is having some issues 🐞. If same issue recurrs, please contact us!

[CuriousLocky]

@AnHaechan It looks like it's having the same issue again.

[AnHaechan]

@CuriousLocky We'll fix the leaderboard tomorrow. Sorry for inconvenience.
Even if the leaderboard is not updated, your submission and performance in gg will be used for grading.

[jirheee]

We have just fixed the crawler! Also, we added a field Updated at in
the sheet so that you can see when was the last update.

[jlee335]

@jirheee @AnHaechan I think I'm facing the same issue. I also submitted my HW8 code last night with a success, but cannot see my results on the leaderboard.

[AnHaechan]

@jlee335 Sorry for inconvenience. We'll fix the updater soon. Even if your score is not updated on the leaderboard, your submissions in gg will be used for graidng, so don't worry..

[jirheee]

Yeah I think it is due to too much workload on the server. Since we have only 3 minutes left, I don't think fixing it right now is not possible. But all of your submissions until 11:59 will be graded and the highest among your submissions will be your final score. Sorry for inconvenience😭

[travis1829]

Yeah I think it is due to too much workload on the server. Since we have only 3 minutes left, I don't think fixing it right now is not possible. But all of your submissions until 11:59 will be graded and the highest among your submissions will be your final score.

Thanks for the reply!
(BTW, I deleted the original message because I thought it was fixed)

[CuriousLocky]

@jirheee It's a minor problem but I also want to point out that the leaderboard does not seem to show my highest submission score. It's just 1% difference and does not affect the ranking though.

[jirheee]

@CuriousLocky Oh that is weird.. I will look through the submissions considering that too 🫠

[CuriousLocky]

@jirheee FYI, the submission ID is 21543