OpenWatcom owcc optimizations (himeno) Testing different optimization levels using the OpenWatcom "owcc" compiler owcc_o0: Processor: AMD E-450 APU @ 1.65GHz (2 Cores), Motherboard: ASUS K73BR v1.0, Chipset: AMD Family 14h Root Complex, Memory: 4096MB, Disk: 320GB Western Digital WD3200BPVT-8, Graphics: ASUS AMD Radeon HD 6400M/7400M 1024MB, Audio: AMD SBx00 Azalia, Network: Realtek RTL8111/8168/8411 + Qualcomm Atheros AR9285 Wireless OS: Arch rolling, Kernel: 3.16.6-2-ck (x86_64), Desktop: KDE Frameworks 5, Display Driver: radeon 7.5.0, Compiler: GCC 4.9.1 20140903 + Clang 3.5.0 + LLVM 3.5.0, File-System: btrfs, Screen Resolution: 1600x900 owcc_o1: Processor: AMD E-450 APU @ 1.65GHz (2 Cores), Motherboard: ASUS K73BR v1.0, Chipset: AMD Family 14h Root Complex, Memory: 4096MB, Disk: 320GB Western Digital WD3200BPVT-8, Graphics: ASUS AMD Radeon HD 6400M/7400M 1024MB, Audio: AMD SBx00 Azalia, Network: Realtek RTL8111/8168/8411 + Qualcomm Atheros AR9285 Wireless OS: Arch rolling, Kernel: 3.16.6-2-ck (x86_64), Desktop: KDE Frameworks 5, Display Driver: radeon 7.5.0, Compiler: GCC 4.9.1 20140903 + Clang 3.5.0 + LLVM 3.5.0, File-System: btrfs, Screen Resolution: 1600x900 owcc_o2: Processor: AMD E-450 APU @ 1.65GHz (2 Cores), Motherboard: ASUS K73BR v1.0, Chipset: AMD Family 14h Root Complex, Memory: 4096MB, Disk: 320GB Western Digital WD3200BPVT-8, Graphics: ASUS AMD Radeon HD 6400M/7400M 1024MB, Audio: AMD SBx00 Azalia, Network: Realtek RTL8111/8168/8411 + Qualcomm Atheros AR9285 Wireless OS: Arch rolling, Kernel: 3.16.6-2-ck (x86_64), Desktop: KDE Frameworks 5, Display Driver: radeon 7.5.0, Compiler: GCC 4.9.1 20140903 + Clang 3.5.0 + LLVM 3.5.0, File-System: btrfs, Screen Resolution: 1600x900 owcc_o3: Processor: AMD E-450 APU @ 1.65GHz (2 Cores), Motherboard: ASUS K73BR v1.0, Chipset: AMD Family 14h Root Complex, Memory: 4096MB, Disk: 320GB Western Digital WD3200BPVT-8, Graphics: ASUS AMD Radeon HD 6400M/7400M 1024MB, Audio: AMD SBx00 Azalia, Network: Realtek RTL8111/8168/8411 + Qualcomm Atheros AR9285 Wireless OS: Arch rolling, Kernel: 3.16.6-2-ck (x86_64), Desktop: KDE Frameworks 5, Display Driver: radeon 7.5.0, Compiler: GCC 4.9.1 20140903 + Clang 3.5.0 + LLVM 3.5.0, File-System: btrfs, Screen Resolution: 1600x900 owcc_os: Processor: AMD E-450 APU @ 1.65GHz (2 Cores), Motherboard: ASUS K73BR v1.0, Chipset: AMD Family 14h Root Complex, Memory: 4096MB, Disk: 320GB Western Digital WD3200BPVT-8, Graphics: ASUS AMD Radeon HD 6400M/7400M 1024MB, Audio: AMD SBx00 Azalia, Network: Realtek RTL8111/8168/8411 + Qualcomm Atheros AR9285 Wireless OS: Arch rolling, Kernel: 3.16.6-2-ck (x86_64), Desktop: KDE Frameworks 5, Display Driver: radeon 7.5.0, Compiler: GCC 4.9.1 20140903 + Clang 3.5.0 + LLVM 3.5.0, File-System: btrfs, Screen Resolution: 1600x900 owcc_Ot: Processor: AMD E-450 APU @ 1.65GHz (2 Cores), Motherboard: ASUS K73BR v1.0, Chipset: AMD Family 14h Root Complex, Memory: 4096MB, Disk: 320GB Western Digital WD3200BPVT-8, Graphics: ASUS AMD Radeon HD 6400M/7400M 1024MB, Audio: AMD SBx00 Azalia, Network: Realtek RTL8111/8168/8411 + Qualcomm Atheros AR9285 Wireless OS: Arch rolling, Kernel: 3.16.6-2-ck (x86_64), Desktop: KDE Frameworks 5, Display Driver: radeon 7.5.0, Compiler: GCC 4.9.1 20140903 + Clang 3.5.0 + LLVM 3.5.0, File-System: btrfs, Screen Resolution: 1600x900 Himeno Benchmark 3.0 Poisson Pressure Solver MFLOPS > Higher Is Better owcc_o0 . 55.66 |========================================= owcc_o1 . 83.30 |============================================================== owcc_o2 . 80.87 |============================================================ owcc_o3 . 76.22 |========================================================= owcc_os . 79.75 |=========================================================== owcc_Ot . 83.62 |==============================================================