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https://github.com/BillyOutlast/flash-attention-prebuild-wheels-rocm.git
synced 2026-07-01 01:37:53 -04:00
fix: Update build parallel
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+12
-6
@@ -54,15 +54,21 @@ echo " RAM: ${RAM_GB}GB"
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# Determine MAX_JOBS and NVCC_THREADS based on system resources
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if [[ -z "${MAX_JOBS:-}" && -z "${NVCC_THREADS:-}" ]]; then
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# Calculate max product based on following constraints:
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# - MAX_JOBS x NVCC_THREADS <= NUM_THREADS
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# - 2.5GB x MAX_JOBS x NVCC_THREADS <= RAM_GB
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# - MAX_JOBS x NVCC_THREADS(<= 4) <= NUM_THREADS
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# - 2.5GB x MAX_JOBS x NVCC_THREADS(<= 4) <= RAM_GB
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MAX_PRODUCT_CPU=$NUM_THREADS
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MAX_PRODUCT_RAM=$(awk -v ram="$RAM_GB" 'BEGIN {print int(ram / 2.5)}')
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MAX_PRODUCT_RAM=$(awk -v ram="$RAM_GB" 'BEGIN {print int(ram / 2.25)}')
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MAX_PRODUCT=$((MAX_PRODUCT_CPU < MAX_PRODUCT_RAM ? MAX_PRODUCT_CPU : MAX_PRODUCT_RAM))
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# Set MAX_JOBS = NVCC_THREADS = floor(sqrt(MAX_PRODUCT))
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MAX_JOBS=$(awk -v max="$MAX_PRODUCT" 'BEGIN {print int(sqrt(max))}')
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NVCC_THREADS=$MAX_JOBS
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# Set MAX_JOBS and NVCC_THREADS so that MAX_JOBS x NVCC_THREADS ≈ MAX_PRODUCT with NVCC_THREADS <= 4
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BASE_THREADS=$(awk -v max="$MAX_PRODUCT" 'BEGIN {print int(sqrt(max))}')
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if (( BASE_THREADS <= 4 )); then
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MAX_JOBS=$BASE_THREADS
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NVCC_THREADS=$BASE_THREADS
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else
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NVCC_THREADS=4
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MAX_JOBS=$((MAX_PRODUCT / NVCC_THREADS))
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fi
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# Ensure minimum values of 1
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MAX_JOBS=$((MAX_JOBS < 1 ? 1 : MAX_JOBS))
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