GCC 7.2 vs. GCC 8 Halloween Znver1 EPYC AMD EPYC 7601 32-Core testing with a TYAN B8026T70AE24HR and ASPEED ASPEED Family on Ubuntu 17.10 via the Phoronix Test Suite. GCC 7.2.0: Processor: AMD EPYC 7601 32-Core @ 2.20GHz (32 Cores / 64 Threads), Motherboard: TYAN B8026T70AE24HR, Chipset: AMD Device 1450, Memory: 129024MB, Disk: 120GB Force MP500, Graphics: ASPEED ASPEED Family, Monitor: Acer P243W, Network: Broadcom Limited NetXtreme BCM5720 Gigabit PCIe OS: Ubuntu 17.10, Kernel: 4.13.0-16-generic (x86_64), Desktop: GNOME Shell 3.26.1, Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 1920x1200 GCC 8.0.0 20171030: Processor: AMD EPYC 7601 32-Core @ 2.20GHz (32 Cores / 64 Threads), Motherboard: TYAN B8026T70AE24HR, Chipset: AMD Device 1450, Memory: 129024MB, Disk: 120GB Force MP500, Graphics: ASPEED ASPEED Family, Monitor: Acer P243W, Network: Broadcom Limited NetXtreme BCM5720 Gigabit PCIe OS: Ubuntu 17.10, Kernel: 4.13.0-16-generic (x86_64), Desktop: GNOME Shell 3.26.1, Compiler: GCC 8.0.0 20171030, File-System: ext4, Screen Resolution: 1920x1200 TTSIOD 3D Renderer 2.3a Phong Rendering With Soft-Shadow Mapping FPS > Higher Is Better GCC 7.2.0 .......... 407.27 |================================================== GCC 8.0.0 20171030 . 407.58 |================================================== High Performance Conjugate Gradient 3.0 GFLOP/s > Higher Is Better GCC 7.2.0 .......... 0.73 |==================================================== GCC 8.0.0 20171030 . 0.72 |=================================================== GNU GMP GMPbench 6.1.2 Total Time GMPbench Score > Higher Is Better GCC 7.2.0 .......... 3918.80 |================================================= GCC 8.0.0 20171030 . 3926.20 |================================================= GraphicsMagick 1.3.19 Operation: Blur Iterations Per Minute > Higher Is Better GCC 7.2.0 .......... 148 |===================================================== GCC 8.0.0 20171030 . 148 |===================================================== GraphicsMagick 1.3.19 Operation: Sharpen Iterations Per Minute > Higher Is Better GCC 7.2.0 .......... 177 |==================================================== GCC 8.0.0 20171030 . 179 |===================================================== GraphicsMagick 1.3.19 Operation: Resizing Iterations Per Minute > Higher Is Better GCC 7.2.0 .......... 174 |==================================================== GCC 8.0.0 20171030 . 176 |===================================================== GraphicsMagick 1.3.19 Operation: HWB Color Space Iterations Per Minute > Higher Is Better GCC 7.2.0 .......... 198 |===================================================== GCC 8.0.0 20171030 . 199 |===================================================== GraphicsMagick 1.3.19 Operation: Local Adaptive Thresholding Iterations Per Minute > Higher Is Better GCC 7.2.0 .......... 109 |===================================================== GCC 8.0.0 20171030 . 110 |===================================================== libjpeg-turbo tjbench 1.5.1 Test: Decompression Throughput Megapixels/sec > Higher Is Better GCC 7.2.0 .......... 141.55 |================================================= GCC 8.0.0 20171030 . 143.79 |================================================== FFTW 3.3.6 Build: Stock - Size: 1D FFT Size 1024 Mflops > Higher Is Better GCC 7.2.0 .......... 8539.10 |================================================= GCC 8.0.0 20171030 . 8416.23 |================================================ FFTW 3.3.6 Build: Stock - Size: 2D FFT Size 1024 Mflops > Higher Is Better GCC 7.2.0 .......... 6420.23 |================================================ GCC 8.0.0 20171030 . 6622.90 |================================================= FFTW 3.3.6 Build: Float + SSE - Size: 1D FFT Size 1024 Mflops > Higher Is Better GCC 7.2.0 .......... 26763 |=================================================== GCC 8.0.0 20171030 . 26876 |=================================================== FFTW 3.3.6 Build: Float + SSE - Size: 2D FFT Size 1024 Mflops > Higher Is Better GCC 7.2.0 .......... 19834 |================================================ GCC 8.0.0 20171030 . 21131 |=================================================== SciMark 2.0 Computational Test: Composite Mflops > Higher Is Better GCC 7.2.0 .......... 1925.72 |================================================= GCC 8.0.0 20171030 . 1933.09 |================================================= SciMark 2.0 Computational Test: Monte Carlo Mflops > Higher Is Better GCC 7.2.0 .......... 194.45 |================== GCC 8.0.0 20171030 . 554.99 |================================================== SciMark 2.0 Computational Test: Fast Fourier Transform Mflops > Higher Is Better GCC 7.2.0 .......... 223.69 |================================================== GCC 8.0.0 20171030 . 223.06 |================================================== SciMark 2.0 Computational Test: Sparse Matrix Multiply Mflops > Higher Is Better GCC 7.2.0 .......... 2376.61 |================================================ GCC 8.0.0 20171030 . 2444.39 |================================================= SciMark 2.0 Computational Test: Dense LU Matrix Factorization Mflops > Higher Is Better GCC 7.2.0 .......... 5150.44 |================================================= GCC 8.0.0 20171030 . 4757.53 |============================================= SciMark 2.0 Computational Test: Jacobi Successive Over-Relaxation Mflops > Higher Is Better GCC 7.2.0 .......... 1683.40 |================================================= GCC 8.0.0 20171030 . 1685.48 |================================================= Himeno Benchmark 3.0 Poisson Pressure Solver MFLOPS > Higher Is Better GCC 7.2.0 .......... 936.77 |================================================== GCC 8.0.0 20171030 . 942.44 |================================================== TSCP 1.81 AI Chess Performance Nodes Per Second > Higher Is Better GCC 7.2.0 .......... 861129 |================================================== GCC 8.0.0 20171030 . 853655 |================================================== Redis 3.0.1 Test: LPOP Requests Per Second > Higher Is Better GCC 7.2.0 .......... 202065.84 |=============================================== GCC 8.0.0 20171030 . 195542.12 |============================================= Redis 3.0.1 Test: SADD Requests Per Second > Higher Is Better GCC 7.2.0 .......... 189478.65 |============================================== GCC 8.0.0 20171030 . 193163.62 |=============================================== Redis 3.0.1 Test: LPUSH Requests Per Second > Higher Is Better GCC 7.2.0 .......... 193867.82 |=============================================== GCC 8.0.0 20171030 . 192219.37 |=============================================== Redis 3.0.1 Test: GET Requests Per Second > Higher Is Better GCC 7.2.0 .......... 198580.74 |=============================================== GCC 8.0.0 20171030 . 198883.33 |=============================================== Redis 3.0.1 Test: SET Requests Per Second > Higher Is Better GCC 7.2.0 .......... 192063.14 |=============================================== GCC 8.0.0 20171030 . 193210.49 |=============================================== PostgreSQL pgbench 10.0 Scaling: Buffer Test - Test: Normal Load - Mode: Read Only TPS > Higher Is Better GCC 7.2.0 .......... 308134.57 |=============================================== GCC 8.0.0 20171030 . 303543.17 |============================================== PostgreSQL pgbench 10.0 Scaling: Buffer Test - Test: Single Thread - Mode: Read Only TPS > Higher Is Better GCC 7.2.0 .......... 10784.92 |================================================ GCC 8.0.0 20171030 . 10709.13 |================================================ Stockfish 2014-11-26 Total Time ms < Lower Is Better GCC 7.2.0 .......... 4485 |==================================================== GCC 8.0.0 20171030 . 4500 |==================================================== C-Ray 1.1 Total Time Seconds < Lower Is Better GCC 7.2.0 .......... 3.08 |==================================================== GCC 8.0.0 20171030 . 2.74 |============================================== Primesieve 6.2 1e12 Prime Number Generation Seconds < Lower Is Better GCC 7.2.0 .......... 11.91 |=================================================== GCC 8.0.0 20171030 . 11.94 |=================================================== Smallpt 1.0 Global Illumination Renderer; 100 Samples Seconds < Lower Is Better GCC 7.2.0 .......... 4 |======================================================= GCC 8.0.0 20171030 . 4 |======================================================= LAME MP3 Encoding 3.99.5 WAV To MP3 Seconds < Lower Is Better GCC 7.2.0 .......... 11.20 |=================================================== GCC 8.0.0 20171030 . 10.71 |================================================= FFmpeg 3.3.3 H.264 HD To NTSC DV Seconds < Lower Is Better GCC 7.2.0 .......... 10.69 |=================================================== GCC 8.0.0 20171030 . 10.66 |===================================================