Aggregate Speedups for Concurrent or Parallel STREAM on Shared-Memory Multiprocessors John D. McCalpin john@mccalpin.com Revised to: Tue Jan 24 17:13:28 1995 num Bandwidth (MB/s) Machine cpus Copy Scale Sum Triad --------------- ----- -------- -------- -------- -------- Cray C90 16 105497.4 104656.4 101736.1 103812.8 Cray C90 8 55071.9 55391.8 60843.3 63229.6 Cray C90 4 27610.3 27789.6 34633.3 35044.1 Cray C90 2 13866.0 13905.5 18233.2 18246.3 Cray C90 1 6965.4 6965.4 9378.7 9500.7 Cray Y/MP 8 19291.6 19294.2 26588.9 26802.2 Cray Y/MP 4 9685.8 9678.9 13781.4 13851.2 Cray Y/MP 1 2426.4 2426.2 3454.4 3396.9 Cray J90 4 4699.0 4754.0 4386.0 4346.0 Cray J90 2 2729.0 2609.0 2463.0 2433.0 Cray J90 1 1436.0 1395.0 1263.0 1275.0 Cray EL-98 8 2362.8 2310.5 2373.7 2363.8 Cray EL-98 4 1564.9 1569.8 1933.8 1955.5 Cray EL-98 2 826.7 833.8 1049.0 1078.2 Cray EL-98 1 437.2 436.7 536.2 476.8 Convex C3420 2 cpu 2 289.1 273.1 302.7 300.3 Convex C3410 1 cpu 1 177.6 172.5 179.0 178.4 Convex C3220 2 cpu 2 334.3 333.0 337.3 336.5 Convex C3210 1 cpu 1 180.1 179.4 181.4 180.8 Stardent P3 3 228.6 246.2 246.2 200.0 Stardent P3 1 83.1 78.0 78.0 70.1 SGI Power Challenge 8 661.0 578.9 660.8 749.3 SGI Power Challenge 6 571.4 538.7 602.0 647.1 SGI Power Challenge 4 439.8 407.8 463.1 478.8 SGI Power Challenge 2 234.8 222.8 252.3 254.8 SGI Power Challenge 1 124.5 119.9 132.9 133.2 SGI Challenge 150MHz 8 479.1 478.9 503.1 499.0 SGI Challenge 150MHz 4 263.8 253.8 267.3 259.3 SGI Challenge 150MHz 1 67.5 68.1 68.6 68.5 Sun SparcCenter 2000 6 164.4 166.4 172.5 170.9 Sun SparcCenter 2000 4 122.3 125.4 127.9 128.5 Sun SparcCenter 2000 2 66.5 68.2 71.0 70.0 Sun SparcCenter 2000 1 33.4 35.3 36.2 35.9 Sun SC2000, autopar 8 104.6 100.0 116.4 135.8 Sun SC2000, autopar 7 106.3 111.7 126.3 113.1 Sun SC2000, autopar 6 107.2 124.3 147.9 120.3 Sun SC2000, autopar 5 127.6 127.6 138.2 142.7 Sun SC2000, autopar 4 112.7 113.9 121.4 125.4 Sun SC2000, autopar 3 92.6 92.4 99.1 102.0 Sun SC2000, autopar 2 66.8 66.8 70.3 72.7 Sun SC2000, autopar 1 35.3 35.3 36.1 36.7 DEC 7000/640 4 261.9 257.4 261.1 265.9 DEC 7000/640 2 163.9 166.0 161.8 157.1 DEC 7000/640 1 91.6 91.6 88.8 86.9 DEC 2100 A500 2 133.3 133.6 129.6 127.7 DEC 2100 A500 1 79.2 80.8 79.1 79.3