OPM Git Compiler Tuning
Intel Xeon E5-2687W v3 testing with a MSI X99S SLI PLUS (MS-7885) v1.0 and AMD FirePro V7900 2048MB on Debian testing via the Phoronix Test Suite.


-O3 -march=native: 

	Processor: Intel Xeon E5-2687W v3 @ 3.50GHz (20 Cores), Motherboard: MSI X99S SLI PLUS (MS-7885) v1.0, Chipset: Intel Xeon E7 v3/Xeon, Memory: 16384MB, Disk: PNY CS1211 120GB + 80GB INTEL SSDSCKGW08, Graphics: AMD FirePro V7900 2048MB, Audio: Realtek ALC892, Monitor: ASUS PB278, Network: Intel Connection

	OS: Debian testing, Kernel: 4.4.0-1-amd64 (x86_64), Display Server: X Server 1.18.2, Display Driver: modesetting 1.18.2, OpenGL: 3.3 Mesa 11.1.2 Gallium 0.4, Compiler: GCC 5.3.1 20160323, File-System: ext4, Screen Resolution: 2560x1440

-O3: 

	Processor: Intel Xeon E5-2687W v3 @ 3.50GHz (20 Cores), Motherboard: MSI X99S SLI PLUS (MS-7885) v1.0, Chipset: Intel Xeon E7 v3/Xeon, Memory: 16384MB, Disk: PNY CS1211 120GB + 80GB INTEL SSDSCKGW08, Graphics: AMD FirePro V7900 2048MB, Audio: Realtek ALC892, Monitor: ASUS PB278, Network: Intel Connection

	OS: Debian testing, Kernel: 4.4.0-1-amd64 (x86_64), Display Server: X Server 1.18.2, Display Driver: modesetting 1.18.2, OpenGL: 3.3 Mesa 11.1.2 Gallium 0.4, Compiler: GCC 5.3.1 20160323, File-System: ext4, Screen Resolution: 2560x1440

-O0: 

	Processor: Intel Xeon E5-2687W v3 @ 3.50GHz (20 Cores), Motherboard: MSI X99S SLI PLUS (MS-7885) v1.0, Chipset: Intel Xeon E7 v3/Xeon, Memory: 16384MB, Disk: PNY CS1211 120GB + 80GB INTEL SSDSCKGW08, Graphics: AMD FirePro V7900 2048MB, Audio: Realtek ALC892, Monitor: ASUS PB278, Network: Intel Connection

	OS: Debian testing, Kernel: 4.4.0-1-amd64 (x86_64), Display Server: X Server 1.18.2, Display Driver: modesetting 1.18.2, OpenGL: 3.3 Mesa 11.1.2 Gallium 0.4, Compiler: GCC 5.3.1 20160323, File-System: ext4, Screen Resolution: 2560x1440


Open Porous Media Git
OPM Benchmark: Flow MPI Norne - Threads: 16
Seconds < Lower Is Better
-O3 -march=native . 456.26 |===================================================
-O3 ............... 455.69 |===================================================
-O0 ............... 453.75 |===================================================


Open Porous Media Git
OPM Benchmark: Upscale-Relperm - Threads: 16
Seconds < Lower Is Better
-O3 -march=native . 13.53 |=================================================
-O3 ............... 14.42 |====================================================
-O0 ............... 14.08 |===================================================