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Remove dead CuPy link, refresh Xena/K40 GPU benchmarks with real Easley data#258

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Graviton28 wants to merge 3 commits into
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fix-dead-links
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Remove dead CuPy link, refresh Xena/K40 GPU benchmarks with real Easley data#258
Graviton28 wants to merge 3 commits into
masterfrom
fix-dead-links

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@Graviton28

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Summary

  • Fixes "CuPy - Cuda in Python" is a dead link #151: removes the README link to CuPy_on_CARC.ipynb, which was never actually added to the repo (checked full history/all branches — no trace of it anywhere).
  • Fixes Old GPUs referenced in multiGPU_tensorflow_tutorial.md #235: removes the old "CARC Benchmarks" section in multiGPU_tensorflow_tutorial.md, which referenced an NVIDIA Tesla K40 on the retired Xena cluster, and replaces it with fresh benchmark data and plots generated on Easley's l40s partition (single L40S GPU) comparing CPU vs GPU for matrix multiplication and inversion at N=1000/2000/4000/8000.

Test plan

  • Confirmed no reference to CuPy_on_CARC.ipynb exists anywhere in repo history or branches.
  • Confirmed the old K40 benchmark images (Images/matrix_inverse.png, Images/matrix_multiplication.png) aren't referenced by any other doc before replacing them.
  • Generated fresh benchmark data on Easley's l40s partition and verified the new plots match the underlying CSV results.

Fixes #151. The referenced file was never actually added to the
repo (checked full history and all branches — no trace of it
anywhere), so the README link has been a 404 since it was written.
Removing rather than recreating content that never existed.
Fixes #235. The old "CARC Benchmarks" section referenced an NVIDIA
Tesla K40 on the retired Xena cluster. Removed it entirely and
replaced it with real benchmark data + fresh plots generated on
Easley's l40s partition (single L40S GPU), comparing CPU vs GPU for
matrix multiplication and inversion at N=1000/2000/4000/8000.
@Graviton28
Graviton28 requested a review from gmfricke as a code owner July 7, 2026 19:11
The CuPy dead link is being replaced with a real doc (cupy_intro.md,
separate PR) rather than just deleted, so this PR shouldn't touch
that line anymore - just the benchmark refresh (#235).
@Graviton28

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Combining with #260 into #261 — closing this one in favor of the combined PR.

@Graviton28 Graviton28 closed this Jul 7, 2026
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"CuPy - Cuda in Python" is a dead link Old GPUs referenced in multiGPU_tensorflow_tutorial.md

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