gcc -O2 -DUNIX flops.c -m32 -march=i386 -mtune=generic -o flops FLOPS C Program (Double Precision), V2.0 18 Dec 1992 Module Error RunTime MFLOPS (usec) 1 -8.1208e-11 0.0100 1403.2013 2 1.4704e-15 0.0086 815.2356 3 -3.8213e-15 0.0076 2238.5432 4 6.1151e-14 0.0079 1902.7553 5 -4.4419e-14 0.0159 1819.4941 6 7.7002e-15 0.0141 2059.8045 7 -6.6161e-13 0.0236 508.9145 8 2.2789e-14 0.0141 2127.2906 Iterations = 512000000 NullTime (usec) = 0.0000 MFLOPS(1) = 1029.1609 MFLOPS(2) = 1014.7499 MFLOPS(3) = 1567.2928 MFLOPS(4) = 2084.3364 ------------------------------------------------------------------- gcc -O2 -DUNIX flops.c -m32 -march=i686 -mtune=generic -o flops FLOPS C Program (Double Precision), V2.0 18 Dec 1992 Module Error RunTime MFLOPS (usec) 1 -8.1208e-11 0.0100 1403.2011 2 1.4704e-15 0.0091 773.0317 3 -3.8213e-15 0.0075 2252.4475 4 6.1151e-14 0.0079 1902.7549 5 -4.4419e-14 0.0159 1822.1738 6 7.7002e-15 0.0141 2057.5211 7 -6.6161e-13 0.0236 509.0832 8 2.2789e-14 0.0141 2128.4701 Iterations = 512000000 NullTime (usec) = 0.0000 MFLOPS(1) = 984.4080 MFLOPS(2) = 1015.3324 MFLOPS(3) = 1568.4767 MFLOPS(4) = 2086.2031 ---------------------------------------------------------------------- gcc -O2 -msse2 -DUNIX flops.c -m32 -march=i686 -mtune=generic -o flops FLOPS C Program (Double Precision), V2.0 18 Dec 1992 Module Error RunTime MFLOPS (usec) 1 -8.1208e-11 0.0099 1409.8255 2 1.4704e-15 0.0094 747.2427 3 -3.8213e-15 0.0076 2233.9463 4 6.1151e-14 0.0078 1914.1380 5 -4.4419e-14 0.0160 1807.9726 6 7.7002e-15 0.0141 2051.8342 7 -6.6161e-13 0.0236 508.7459 8 2.2789e-14 0.0141 2123.7611 Iterations = 512000000 NullTime (usec) = 0.0000 MFLOPS(1) = 955.0271 MFLOPS(2) = 1014.0094 MFLOPS(3) = 1565.4547 MFLOPS(4) = 2082.1009 --------------------------------------------------------------------- gcc -O2 -DUNIX flops.c -m32 -march=k8 -mtune=k8 -o flops FLOPS C Program (Double Precision), V2.0 18 Dec 1992 Module Error RunTime MFLOPS (usec) 1 -8.1208e-11 0.0102 1372.0430 2 1.4704e-15 0.0085 821.2137 3 -3.8213e-15 0.0076 2250.1178 4 6.1151e-14 0.0079 1908.4292 5 -4.4419e-14 0.0160 1816.8225 6 7.7002e-15 0.0143 2026.0742 7 -6.6161e-13 0.0237 506.5646 8 2.2789e-14 0.0141 2127.2906 Iterations = 512000000 NullTime (usec) = 0.0000 MFLOPS(1) = 1036.3726 MFLOPS(2) = 1008.9609 MFLOPS(3) = 1558.4048 MFLOPS(4) = 2076.1624 ------------------------------------------------------------------------- gcc -O2 -DUNIX flops.c -m64 -march=k8 -mtune=k8 -o flops FLOPS C Program (Double Precision), V2.0 18 Dec 1992 Module Error RunTime MFLOPS (usec) 1 4.0146e-13 0.0098 1435.8077 2 -1.4166e-13 0.0085 819.7111 3 4.7184e-14 0.0080 2122.7938 4 -1.2557e-13 0.0075 2008.2427 5 -1.3800e-13 0.0156 1854.9566 6 3.2380e-13 0.0145 2004.1944 7 -8.4583e-11 0.0204 588.2436 8 3.4867e-13 0.0148 2023.0560 Iterations = 512000000 NullTime (usec) = 0.0000 MFLOPS(1) = 1025.5139 MFLOPS(2) = 1110.0527 MFLOPS(3) = 1612.1846 MFLOPS(4) = 2032.3280 ------------------------------------------------------------------------ gcc -O2 -msse2 -DUNIX flops.c -m32 -march=i686 -mtune=generic -mfpmath=sse -o flops FLOPS C Program (Double Precision), V2.0 18 Dec 1992 Module Error RunTime MFLOPS (usec) 1 4.0146e-13 0.0086 1631.9561 2 -1.4166e-13 0.0078 901.3518 3 4.7184e-14 0.0078 2186.7984 4 -1.2557e-13 0.0073 2066.6088 5 -1.3800e-13 0.0156 1856.8126 6 3.2380e-13 0.0142 2038.3128 7 -8.4583e-11 0.0203 591.6425 8 3.4867e-13 0.0163 1840.7288 Iterations = 512000000 NullTime (usec) = 0.0000 MFLOPS(1) = 1115.7724 MFLOPS(2) = 1129.3849 MFLOPS(3) = 1621.5578 MFLOPS(4) = 1997.4742 -------------------------------------------------------------------- gcc -O2 -msse2 -DUNIX flops.c -m32 -march=i686 -mtune=generic -mfpmath=sse -ftree-vectorize -o flops FLOPS C Program (Double Precision), V2.0 18 Dec 1992 Module Error RunTime MFLOPS (usec) 1 4.0146e-13 0.0089 1573.2115 2 -1.4166e-13 0.0078 897.7396 3 4.7184e-14 0.0078 2173.6899 4 -1.2557e-13 0.0073 2057.7493 5 -1.3800e-13 0.0157 1852.1796 6 3.2380e-13 0.0141 2060.9484 7 -8.4583e-11 0.0201 595.5424 8 3.4867e-13 0.0162 1847.8153 Iterations = 512000000 NullTime (usec) = 0.0000 MFLOPS(1) = 1110.9305 MFLOPS(2) = 1131.4868 MFLOPS(3) = 1620.0114 MFLOPS(4) = 2003.6594 --------------------------------------------------------------------- gcc -Os -DUNIX flops.c -m64 -march=k8 -mtune=generic -o flops FLOPS C Program (Double Precision), V2.0 18 Dec 1992 Module Error RunTime MFLOPS (usec) 1 4.0146e-13 0.0096 1450.9217 2 -1.4166e-13 0.0090 776.3812 3 4.7184e-14 0.0078 2180.2247 4 -1.2557e-13 0.0077 1953.0823 5 -1.3800e-13 0.0151 1925.1909 6 3.2380e-13 0.0140 2078.2574 7 -8.4583e-11 0.0212 566.5452 8 3.4867e-13 0.0145 2064.3871 Iterations = 512000000 NullTime (usec) = 0.0000 MFLOPS(1) = 983.3900 MFLOPS(2) = 1094.5643 MFLOPS(3) = 1624.8007 MFLOPS(4) = 2069.8902