aonelinux:~# cd /root/Downloads2 aonelinux:~/Downloads2# nice -20 ./stream nice: ./stream: Permission denied aonelinux:~/Downloads2# nice -20 ./stream ------------------------------------------------------------- STREAM Memory Benchmark ------------------------------------------------------------- The Test will run some minutes please be patient. Total memory required = 160.0 MB. Each test is run 3 times, but only the *best* time for each is used. ------------------------------------------------------------- Memory throughput Working on Arrays of 80 MB. ------------------------------------------------------------- Read test (summing up the array). ------------------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time read 8 176.0392 0.4552 0.4544 0.4559 read 32 205.8391 0.3896 0.3887 0.3905 read 64 212.6642 0.3778 0.3762 0.3795 read 32x2 207.5847 0.3874 0.3854 0.3894 read 32 CP3 258.8168 0.3106 0.3091 0.3122 read 32 CP4 258.8168 0.3106 0.3091 0.3122 read 32 CP5 257.8549 0.3110 0.3103 0.3117 read 32 CP6 257.8865 0.3110 0.3102 0.3117 read 32x4 CP3 257.8092 0.3105 0.3103 0.3108 read 32x4 CP4 257.8750 0.3103 0.3102 0.3103 read 32x4 CP5 256.6085 0.3120 0.3118 0.3122 read 32x4 CP6 256.6183 0.3125 0.3117 0.3132 ------------------------------------------------------------- Write test (setting array A). ------------------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time write 8 227.7743 0.3515 0.3512 0.3517 write 32 268.0246 0.2995 0.2985 0.3005 write 64 597.8007 0.1343 0.1338 0.1347 write 32x2 271.0954 0.2968 0.2951 0.2986 ------------------------------------------------------------- Compare test (comparing the source and destination arrays). ------------------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time cmp 8 192.7685 0.8312 0.8300 0.8323 cmp 32 218.2971 0.7332 0.7329 0.7334 cmp 64 221.0977 0.7237 0.7237 0.7237 cmp 32x2 217.7380 0.7356 0.7348 0.7364 cmp 32 CP2 257.6938 0.6213 0.6209 0.6218 cmp 32 CP3 257.6067 0.6222 0.6211 0.6233 cmp 32 CP4 257.3816 0.6217 0.6216 0.6218 cmp 32 CP5 258.6934 0.6188 0.6185 0.6191 cmp 32 CP6 257.5283 0.6218 0.6213 0.6223 cmp 32x4 CP2 258.3867 0.6198 0.6192 0.6204 cmp 32x4 CP3 258.0953 0.6204 0.6199 0.6209 cmp 32x4 CP4 257.3153 0.6222 0.6218 0.6225 cmp 32x4 CP5 258.1012 0.6199 0.6199 0.6199 cmp 32x4 CP6 256.3774 0.6244 0.6241 0.6248 ------------------------------------------------------------- Copy test (copying array A -> B). ------------------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time copy 8 155.0311 1.0337 1.0321 1.0353 copy 32 146.8612 1.0922 1.0895 1.0949 copy 64 147.0531 1.0909 1.0880 1.0938 copy 32x2 176.6636 0.9064 0.9057 0.9071 copy 32 CP2 200.5093 0.7997 0.7980 0.8014 copy 32 CP3 247.6569 0.6489 0.6461 0.6517 copy 32 CP4 256.8458 0.6230 0.6229 0.6230 copy 32 CP5 254.0851 0.6315 0.6297 0.6333 copy 32x4 CP2 247.2612 0.6522 0.6471 0.6574 copy 32x4 CP3 256.2644 0.6271 0.6244 0.6299 copy 32x4 CP4 257.0479 0.6232 0.6225 0.6240 copy 32x4 CP5 253.3201 0.6324 0.6316 0.6331 copy 64x4 CP4 262.8164 0.6092 0.6088 0.6096 glibcb memcpy 177.8857 0.9002 0.8995 0.9009 bmove512 149.0474 1.0749 1.0735 1.0764 FC64 253.8425 0.6321 0.6303 0.6339 ------------------------------------------------------------- 2nd level cache throughput Working on Arrays of 80 KB. ------------------------------------------------------------- Read test (summing up the array). ------------------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time read 8 416.4822 0.1943 0.1921 0.1965 read 32 1646.8029 0.0490 0.0486 0.0494 read 64 1476.3997 0.0559 0.0542 0.0575 read 32x2 1734.3032 0.0463 0.0461 0.0465 read 32 CP3 1406.8413 0.0570 0.0569 0.0571 read 32 CP4 1403.7045 0.0572 0.0570 0.0573 read 32 CP5 1409.0982 0.0569 0.0568 0.0570 read 32 CP6 1410.0397 0.0571 0.0567 0.0575 read 32x4 CP3 2117.9743 0.0378 0.0378 0.0378 read 32x4 CP4 2120.1691 0.0380 0.0377 0.0382 read 32x4 CP5 2112.3211 0.0381 0.0379 0.0382 read 32x4 CP6 2105.2704 0.0382 0.0380 0.0383 ------------------------------------------------------------- Write test (setting array A). ------------------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time write 8 621.0793 0.1296 0.1288 0.1304 write 32 1544.6713 0.0519 0.0518 0.0519 write 64 1973.7553 0.0408 0.0405 0.0411 write 32x2 1549.4217 0.0520 0.0516 0.0524 ------------------------------------------------------------- Compare test (comparing the source and destination arrays). ------------------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time cmp 8 541.5468 0.2984 0.2954 0.3014 cmp 32 1465.8736 0.1092 0.1091 0.1092 cmp 64 1632.2035 0.0987 0.0980 0.0994 cmp 32x2 1472.2539 0.1103 0.1087 0.1119 cmp 32 CP2 1267.0967 0.1266 0.1263 0.1269 cmp 32 CP3 1301.3109 0.1245 0.1230 0.1261 cmp 32 CP4 1363.9791 0.1178 0.1173 0.1182 cmp 32 CP5 1404.3096 0.1140 0.1139 0.1140 cmp 32 CP6 1423.1186 0.1132 0.1124 0.1140 cmp 32x4 CP2 1724.9596 0.0943 0.0928 0.0958 cmp 32x4 CP3 1794.2491 0.0907 0.0892 0.0922 cmp 32x4 CP4 1837.4110 0.0873 0.0871 0.0874 cmp 32x4 CP5 1921.7613 0.0836 0.0833 0.0839 cmp 32x4 CP6 1950.4365 0.0822 0.0820 0.0825 ------------------------------------------------------------- Copy test (copying array A -> B). ------------------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time copy 8 570.9308 0.2807 0.2802 0.2811 copy 32 1579.0024 0.1016 0.1013 0.1018 copy 64 2540.5301 0.0656 0.0630 0.0682 copy 32x2 1537.2197 0.1067 0.1041 0.1093 copy 32 CP2 1308.6650 0.1226 0.1223 0.1230 copy 32 CP3 1320.4896 0.1224 0.1212 0.1235 copy 32 CP4 1325.2172 0.1209 0.1207 0.1210 copy 32 CP5 1334.4667 0.1213 0.1199 0.1228 copy 32x4 CP2 1675.0750 0.0982 0.0955 0.1009 copy 32x4 CP3 1703.2145 0.0942 0.0939 0.0944 copy 32x4 CP4 1692.4971 0.0945 0.0945 0.0946 copy 32x4 CP5 1725.6072 0.0934 0.0927 0.0941 copy 64x4 CP4 4047.1643 0.0398 0.0395 0.0401 glibcb memcpy 1464.8145 0.1093 0.1092 0.1093 bmove512 1490.7582 0.1093 0.1073 0.1112 FC64 2313.7796 0.0710 0.0692 0.0729 ------------------------------------------------------------- 1st level cache throughput Working on Arrays of 800 B. ------------------------------------------------------------- Read test (summing up the array). ------------------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time read 8 455.3452 0.1766 0.1757 0.1776 read 32 2828.4470 0.0284 0.0283 0.0285 read 64 1441.8556 0.0556 0.0555 0.0557 read 32x2 3094.6565 0.0259 0.0259 0.0259 read 32 CP3 1809.4203 0.0443 0.0442 0.0445 read 32 CP4 1814.3023 0.0441 0.0441 0.0442 read 32 CP5 1812.4990 0.0442 0.0441 0.0442 read 32 CP6 1814.5083 0.0441 0.0441 0.0442 read 32x4 CP3 2884.2442 0.0278 0.0277 0.0278 read 32x4 CP4 2881.1238 0.0279 0.0278 0.0280 read 32x4 CP5 2886.6262 0.0278 0.0277 0.0278 read 32x4 CP6 2841.7175 0.0283 0.0282 0.0284 ------------------------------------------------------------- Write test (setting array A). ------------------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time write 8 784.7907 0.1024 0.1019 0.1028 write 32 3019.3312 0.0265 0.0265 0.0266 write 64 2446.4786 0.0329 0.0327 0.0330 write 32x2 3075.9614 0.0260 0.0260 0.0260 ------------------------------------------------------------- Compare test (comparing the source and destination arrays). ------------------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time cmp 8 629.4210 0.2542 0.2542 0.2542 cmp 32 2979.9012 0.0538 0.0537 0.0538 cmp 64 2376.4267 0.0674 0.0673 0.0675 cmp 32x2 3032.4837 0.0530 0.0528 0.0532 cmp 32 CP2 1824.5673 0.0878 0.0877 0.0879 cmp 32 CP3 1831.2289 0.0879 0.0874 0.0883 cmp 32 CP4 1824.9643 0.0878 0.0877 0.0879 cmp 32 CP5 1776.4947 0.0905 0.0901 0.0908 cmp 32 CP6 1823.4866 0.0878 0.0877 0.0879 cmp 32x4 CP2 2644.4029 0.0607 0.0605 0.0609 cmp 32x4 CP3 2639.2238 0.0607 0.0606 0.0607 cmp 32x4 CP4 2640.7089 0.0609 0.0606 0.0612 cmp 32x4 CP5 2644.4550 0.0606 0.0605 0.0606 cmp 32x4 CP6 2643.2780 0.0606 0.0605 0.0606 ------------------------------------------------------------- Copy test (copying array A -> B). ------------------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time copy 8 609.3704 0.2640 0.2626 0.2654 copy 32 2455.5647 0.0653 0.0652 0.0654 copy 64 4753.8634 0.0338 0.0337 0.0338 copy 32x2 2474.9446 0.0648 0.0646 0.0650 copy 32 CP2 1489.7984 0.1075 0.1074 0.1076 copy 32 CP3 1481.0297 0.1090 0.1080 0.1099 copy 32 CP4 1470.8180 0.1096 0.1088 0.1104 copy 32 CP5 1483.9838 0.1080 0.1078 0.1082 copy 32x4 CP2 2927.8843 0.0550 0.0546 0.0553 copy 32x4 CP3 2886.2662 0.0559 0.0554 0.0564 copy 32x4 CP4 2887.7690 0.0555 0.0554 0.0555 copy 32x4 CP5 2930.8252 0.0551 0.0546 0.0555 copy 64x4 CP4 4764.7317 0.0336 0.0336 0.0337 glibcb memcpy 2323.4245 0.0690 0.0689 0.0692 bmove512 1907.5803 0.0853 0.0839 0.0867 FC64 4289.3123 0.0373 0.0373 0.0373 ------------------------------------------------------------- aonelinux:~/Downloads2#