Tests for a future article on Phoronix.
Compare your own system(s) to this result file with the
Phoronix Test Suite by running the command:
phoronix-test-suite benchmark 1801022-AL-CLANGCC8680
GCC 8.0 vs. Clang 6.0 AMD EPYC Tuning Comparison
Tests for a future article on Phoronix.
GCC 8.0: -march=x86-64:
Processor: AMD EPYC 7601 32-Core @ 2.20GHz (64 Cores), Motherboard: TYAN B8026T70AE24HR, Chipset: AMD Device 1450, Memory: 126976MB, Disk: 280GB INTEL SSDPE21D280GA, Graphics: ASPEED ASPEED Family, Monitor: VE228, Network: Broadcom Limited NetXtreme BCM5720 Gigabit PCIe
OS: Ubuntu 17.10, Kernel: 4.13.0-21-generic (x86_64), Desktop: GNOME Shell 3.26.1, Display Driver: modesetting 1.19.5, OpenCL: OpenCL 1.2 pocl 1.0 LLVM 5.0.0, Compiler: GCC 8.0.0 20171231 + clang (GCC) 8.0.0 20171231 (experimental) + LLVM 5.0.0, File-System: ext4, Screen Resolution: 1920x1080, System Layer: vm-other Xen 4.9.0 Hypervisor
GCC 8.0: -march=znver1:
Processor: AMD EPYC 7601 32-Core @ 2.20GHz (64 Cores), Motherboard: TYAN B8026T70AE24HR, Chipset: AMD Device 1450, Memory: 126976MB, Disk: 280GB INTEL SSDPE21D280GA, Graphics: ASPEED ASPEED Family, Monitor: VE228, Network: Broadcom Limited NetXtreme BCM5720 Gigabit PCIe
OS: Ubuntu 17.10, Kernel: 4.13.0-21-generic (x86_64), Desktop: GNOME Shell 3.26.1, Display Driver: modesetting 1.19.5, OpenCL: OpenCL 1.2 pocl 1.0 LLVM 5.0.0, Compiler: GCC 8.0.0 20171231 + clang (GCC) 8.0.0 20171231 (experimental) + LLVM 5.0.0, File-System: ext4, Screen Resolution: 1920x1080, System Layer: vm-other Xen 4.9.0 Hypervisor
Clang 6.0: -march=x86-64:
Processor: AMD EPYC 7601 32-Core @ 2.20GHz (64 Cores), Motherboard: TYAN B8026T70AE24HR, Chipset: AMD Device 1450, Memory: 126976MB, Disk: 280GB INTEL SSDPE21D280GA, Graphics: ASPEED ASPEED Family, Monitor: VE228, Network: Broadcom Limited NetXtreme BCM5720 Gigabit PCIe
OS: Ubuntu 17.10, Kernel: 4.13.0-21-generic (x86_64), Desktop: GNOME Shell 3.26.1, Display Driver: modesetting 1.19.5, OpenCL: OpenCL 1.2 pocl 1.0 LLVM 5.0.0, Compiler: Clang 6.0.0 (SVN 321623) + LLVM 6.0.0svn, File-System: ext4, Screen Resolution: 1920x1080, System Layer: vm-other Xen 4.9.0 Hypervisor
Clang 6.0: -march=znver1:
Processor: AMD EPYC 7601 32-Core @ 2.20GHz (64 Cores), Motherboard: TYAN B8026T70AE24HR, Chipset: AMD Device 1450, Memory: 126976MB, Disk: 280GB INTEL SSDPE21D280GA, Graphics: ASPEED ASPEED Family, Monitor: VE228, Network: Broadcom Limited NetXtreme BCM5720 Gigabit PCIe
OS: Ubuntu 17.10, Kernel: 4.13.0-21-generic (x86_64), Desktop: GNOME Shell 3.26.1, Display Driver: modesetting 1.19.5, OpenCL: OpenCL 1.2 pocl 1.0 LLVM 5.0.0, Compiler: Clang 6.0.0 (SVN 321623) + LLVM 6.0.0svn, File-System: ext4, Screen Resolution: 1920x1080, System Layer: vm-other Xen 4.9.0 Hypervisor
Apache Benchmark 2.4.7
Static Web Page Serving
Requests Per Second > Higher Is Better
GCC 8.0: -march=x86-64 ... 9841.30 |===========================================
GCC 8.0: -march=znver1 ... 9791.23 |===========================================
Clang 6.0: -march=x86-64 . 9531.43 |==========================================
Clang 6.0: -march=znver1 . 9663.93 |==========================================
Bullet Physics Engine 2.81
Test: Raytests
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 3.12 |=============================================
GCC 8.0: -march=znver1 ... 3.06 |============================================
Clang 6.0: -march=x86-64 . 3.22 |==============================================
Clang 6.0: -march=znver1 . 3.18 |=============================================
Bullet Physics Engine 2.81
Test: 3000 Fall
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 5.34 |=============================================
GCC 8.0: -march=znver1 ... 5.27 |============================================
Clang 6.0: -march=x86-64 . 5.48 |==============================================
Clang 6.0: -march=znver1 . 5.34 |=============================================
Bullet Physics Engine 2.81
Test: 1000 Stack
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 6.18 |=============================================
GCC 8.0: -march=znver1 ... 5.93 |===========================================
Clang 6.0: -march=x86-64 . 6.30 |==============================================
Clang 6.0: -march=znver1 . 6.08 |============================================
Bullet Physics Engine 2.81
Test: 1000 Convex
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 5.44 |==============================================
GCC 8.0: -march=znver1 ... 5.28 |=============================================
Clang 6.0: -march=x86-64 . 5.43 |==============================================
Clang 6.0: -march=znver1 . 5.31 |=============================================
Bullet Physics Engine 2.81
Test: 136 Ragdolls
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 3.26 |==============================================
GCC 8.0: -march=znver1 ... 3.19 |=============================================
Clang 6.0: -march=x86-64 . 3.28 |==============================================
Clang 6.0: -march=znver1 . 3.23 |=============================================
Bullet Physics Engine 2.81
Test: Prim Trimesh
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 1.10 |==============================================
GCC 8.0: -march=znver1 ... 1.10 |==============================================
Clang 6.0: -march=x86-64 . 1.10 |==============================================
Clang 6.0: -march=znver1 . 1.09 |==============================================
Bullet Physics Engine 2.81
Test: Convex Trimesh
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 1.34 |==============================================
GCC 8.0: -march=znver1 ... 1.30 |=============================================
Clang 6.0: -march=x86-64 . 1.33 |==============================================
Clang 6.0: -march=znver1 . 1.32 |=============================================
C-Ray 1.1
Total Time
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 3.93 |========================================
GCC 8.0: -march=znver1 ... 3.37 |==================================
Clang 6.0: -march=x86-64 . 4.53 |==============================================
Clang 6.0: -march=znver1 . 4.48 |=============================================
ebizzy 0.3
Records/s > Higher Is Better
GCC 8.0: -march=x86-64 ... 1126032 |==========================================
GCC 8.0: -march=znver1 ... 1101176 |=========================================
Clang 6.0: -march=x86-64 . 1076648 |========================================
Clang 6.0: -march=znver1 . 1145405 |===========================================
FFTW 3.3.6
Build: Stock - Size: 2D FFT Size 4096
Mflops > Higher Is Better
GCC 8.0: -march=x86-64 ... 4959.73 |======================================
GCC 8.0: -march=znver1 ... 5627.83 |===========================================
Clang 6.0: -march=x86-64 . 4660.83 |====================================
Clang 6.0: -march=znver1 . 5031.60 |======================================
FFTW 3.3.6
Build: Float + SSE - Size: 2D FFT Size 4096
Mflops > Higher Is Better
GCC 8.0: -march=znver1 ... 13630 |=============================================
Clang 6.0: -march=x86-64 . 13649 |=============================================
Clang 6.0: -march=znver1 . 12481 |=========================================
FLAC Audio Encoding 1.3.1
WAV To FLAC
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 7.12 |=========================================
GCC 8.0: -march=znver1 ... 7.45 |===========================================
Clang 6.0: -march=x86-64 . 7.94 |==============================================
Clang 6.0: -march=znver1 . 6.63 |======================================
GraphicsMagick 1.3.19
Operation: Blur
Iterations Per Minute > Higher Is Better
GCC 8.0: -march=x86-64 ... 116 |============================================
GCC 8.0: -march=znver1 ... 123 |===============================================
Clang 6.0: -march=x86-64 . 101 |=======================================
Clang 6.0: -march=znver1 . 104 |========================================
GraphicsMagick 1.3.19
Operation: Sharpen
Iterations Per Minute > Higher Is Better
GCC 8.0: -march=x86-64 ... 157 |=============================================
GCC 8.0: -march=znver1 ... 165 |===============================================
Clang 6.0: -march=x86-64 . 131 |=====================================
Clang 6.0: -march=znver1 . 136 |=======================================
GraphicsMagick 1.3.19
Operation: HWB Color Space
Iterations Per Minute > Higher Is Better
GCC 8.0: -march=x86-64 ... 177 |=============================================
GCC 8.0: -march=znver1 ... 186 |===============================================
Clang 6.0: -march=x86-64 . 150 |======================================
Clang 6.0: -march=znver1 . 155 |=======================================
GraphicsMagick 1.3.19
Operation: Local Adaptive Thresholding
Iterations Per Minute > Higher Is Better
GCC 8.0: -march=x86-64 ... 92 |=============================================
GCC 8.0: -march=znver1 ... 95 |===============================================
Clang 6.0: -march=x86-64 . 97 |================================================
Clang 6.0: -march=znver1 . 98 |================================================
Himeno Benchmark 3.0
Poisson Pressure Solver
MFLOPS > Higher Is Better
GCC 8.0: -march=x86-64 ... 949.19 |=======================================
GCC 8.0: -march=znver1 ... 935.64 |======================================
Clang 6.0: -march=x86-64 . 1032.71 |==========================================
Clang 6.0: -march=znver1 . 1052.47 |===========================================
LAME MP3 Encoding 3.99.5
WAV To MP3
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 11.10 |=======================================
GCC 8.0: -march=znver1 ... 10.81 |======================================
Clang 6.0: -march=x86-64 . 11.33 |========================================
Clang 6.0: -march=znver1 . 12.81 |=============================================
PolyBench-C 3.2
Test: 3 Matrix Multiplications
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 60.68 |==========================================
GCC 8.0: -march=znver1 ... 65.45 |=============================================
Clang 6.0: -march=x86-64 . 62.98 |===========================================
Clang 6.0: -march=znver1 . 62.75 |===========================================
SciMark 2.0
Computational Test: Composite
Mflops > Higher Is Better
GCC 8.0: -march=x86-64 ... 1579.48 |========================================
GCC 8.0: -march=znver1 ... 1680.45 |===========================================
Clang 6.0: -march=x86-64 . 1479.53 |=====================================
Clang 6.0: -march=znver1 . 1699.32 |===========================================
SciMark 2.0
Computational Test: Monte Carlo
Mflops > Higher Is Better
GCC 8.0: -march=x86-64 ... 561.03 |============================================
GCC 8.0: -march=znver1 ... 555.76 |============================================
Clang 6.0: -march=x86-64 . 531.38 |==========================================
Clang 6.0: -march=znver1 . 552.19 |===========================================
SciMark 2.0
Computational Test: Fast Fourier Transform
Mflops > Higher Is Better
GCC 8.0: -march=x86-64 ... 233.89 |============================================
GCC 8.0: -march=znver1 ... 231.09 |===========================================
Clang 6.0: -march=x86-64 . 179.29 |==================================
Clang 6.0: -march=znver1 . 226.68 |===========================================
SciMark 2.0
Computational Test: Sparse Matrix Multiply
Mflops > Higher Is Better
GCC 8.0: -march=x86-64 ... 2263.87 |===========================================
GCC 8.0: -march=znver1 ... 2259.95 |===========================================
Clang 6.0: -march=x86-64 . 2190.10 |==========================================
Clang 6.0: -march=znver1 . 2258.64 |===========================================
SciMark 2.0
Computational Test: Dense LU Matrix Factorization
Mflops > Higher Is Better
GCC 8.0: -march=x86-64 ... 3513.11 |=====================================
GCC 8.0: -march=znver1 ... 3678.86 |=======================================
Clang 6.0: -march=x86-64 . 3190.43 |==================================
Clang 6.0: -march=znver1 . 4034.89 |===========================================
SciMark 2.0
Computational Test: Jacobi Successive Over-Relaxation
Mflops > Higher Is Better
GCC 8.0: -march=x86-64 ... 1423.14 |====================================
GCC 8.0: -march=znver1 ... 1676.62 |===========================================
Clang 6.0: -march=x86-64 . 1110.65 |============================
Clang 6.0: -march=znver1 . 1424.21 |=====================================
SQLite 3.8.10.2
Test Target: Default Test Directory
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 7.61 |==============================================
GCC 8.0: -march=znver1 ... 7.16 |===========================================
Clang 6.0: -march=x86-64 . 7.53 |==============================================
Clang 6.0: -march=znver1 . 7.48 |=============================================
Timed HMMer Search 2.3.2
Pfam Database Search
Seconds < Lower Is Better
GCC 8.0: -march=x86-64 ... 13.65 |=============================================
GCC 8.0: -march=znver1 ... 12.40 |=========================================
Clang 6.0: -march=x86-64 . 12.85 |==========================================
Clang 6.0: -march=znver1 . 11.09 |=====================================
TSCP 1.81
AI Chess Performance
Nodes Per Second > Higher Is Better
GCC 8.0: -march=x86-64 ... 874251 |==========================================
GCC 8.0: -march=znver1 ... 875085 |==========================================
Clang 6.0: -march=x86-64 . 917658 |============================================
Clang 6.0: -march=znver1 . 918269 |============================================