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zeekayandHanzo Dev
b1e39595f7
Standalone microbenchmarks for the deterministic CLOB matcher (one thread per book, sequential price-time priority, parity-checked vs OpenMP CPU) across all three GPU makers: CUDA, HIP, Metal. Optimization: order-major SoA layout coalesces warp reads (adjacent books read contiguous words instead of DEPTH-strided). Pure memory-access change; identical deterministic fills (parity MATCH at every N). Measured, tuned per backend (taker orders/sec): - AMD Radeon 8060S (HIP, SoA preload TPB=64): 12.76B (1.94B baseline, 6.6x) - NVIDIA GB10 (CUDA, SoA lowreg TPB=32): 9.13B (1.54B baseline, 5.9x) - Apple M4 Max (Metal, AoS TPB=256): 5.60B (SoA neutral on unified mem) - Apple M1 Max (Metal): 2.80B Findings: coalescing is a discrete/APU-memory win (neutral-to-negative on Apple unified memory); NVIDIA is occupancy-bound (prefers lowreg/small blocks) while AMD is bandwidth-rich (prefers register-resident preload) — opposite optima. Includes dex_tune.cu (TPB x variant sweep) + per-backend build/tune scripts. Co-authored-by: Hanzo Dev <[email protected]>
27 lines
1.5 KiB
Bash
Executable File
27 lines
1.5 KiB
Bash
Executable File
#!/bin/bash
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# build_hip.sh — build the deterministic per-book DEX matcher for AMD (ROCm/HIP).
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# Verified on evo (AMD Radeon 8060S, gfx1151 RDNA3.5 APU, ROCm 7.x).
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# hipify-perl is often absent; we sed-map the CUDA runtime API to HIP (identical semantics).
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# Usage: ./build_hip.sh [N] (N = number of books/markets, default 4000000)
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set -e
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export PATH=/opt/rocm/bin:$PATH
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export LD_LIBRARY_PATH=/opt/rocm/lib:$LD_LIBRARY_PATH
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here=$(cd "$(dirname "$0")" && pwd)
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N=${1:-4000000}
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hipify() {
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sed -e 's/#include <cuda_runtime.h>/#include <hip\/hip_runtime.h>/' \
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-e 's/cudaMalloc/hipMalloc/g' -e 's/cudaMemcpyHostToDevice/hipMemcpyHostToDevice/g' \
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-e 's/cudaMemcpyDeviceToHost/hipMemcpyDeviceToHost/g' -e 's/cudaMemcpy/hipMemcpy/g' \
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-e 's/cudaDeviceSynchronize/hipDeviceSynchronize/g' -e 's/cudaGetLastError/hipGetLastError/g' \
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-e 's/cudaError_t/hipError_t/g' -e 's/cudaSuccess/hipSuccess/g' \
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-e 's/cudaGetErrorString/hipGetErrorString/g' -e 's/cudaDeviceProp/hipDeviceProp_t/g' \
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-e 's/cudaGetDeviceProperties/hipGetDeviceProperties/g' \
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"$1" > "$2"
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}
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hipify "$here/dex_books.cu" /tmp/dex_books.hip.cpp
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hipify "$here/dex_books_opt.cu" /tmp/dex_books_opt.hip.cpp
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hipcc -O3 -fopenmp -o /tmp/dex_books /tmp/dex_books.hip.cpp 2>/dev/null
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hipcc -O3 -fopenmp -o /tmp/dex_books_opt /tmp/dex_books_opt.hip.cpp 2>/dev/null
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echo "--- baseline (AoS) ---"; /tmp/dex_books "$N"
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echo "--- optimized (coalesced SoA) ---"; /tmp/dex_books_opt "$N"
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