fix: L1 cache benchmark uses wrong buffer size due to case mismatch#693
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harp-intel wants to merge 1 commit intomainfrom
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fix: L1 cache benchmark uses wrong buffer size due to case mismatch#693harp-intel wants to merge 1 commit intomainfrom
harp-intel wants to merge 1 commit intomainfrom
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The cache_size_kb() function looks up "L1D" in lscpu -C output, but lscpu reports the L1 data cache as "L1d" (lowercase d). The case-sensitive awk match silently fails, causing the buffer size to fall back to 1 KB instead of the intended half-of-L1d size. This affects both L1 idle latency and L1 max bandwidth benchmarks. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
cache_size_kb()shell function looks upL1D(uppercase D) inlscpu -Coutput, butlscpureports the L1 data cache asL1d(lowercase d). The case-sensitive awk match silently fails, causing the buffer size to fall back to 1 KB instead of the intended half-of-L1d size.L1DtoL1dto matchlscpu -Coutput.Test plan
lscpu -Coutput usesL1don target platforms (Intel GNR, Intel SRF/CWF, AMD EPYC, etc.)🤖 Generated with Claude Code