------------------------------------------------------------- STREAM version $Revision: 5.10 $ ------------------------------------------------------------- This system uses 8 bytes per array element. ------------------------------------------------------------- Array size = 33554432 (elements), Offset = 0 (elements) Memory per array = 256.0 MiB (= 0.2 GiB). Total memory required = 768.0 MiB (= 0.8 GiB). Each kernel will be executed 100 times. The *best* time for each kernel (excluding the first iteration) will be used to compute the reported bandwidth. ------------------------------------------------------------- Number of Threads requested = 64 Number of Threads counted = 64 ------------------------------------------------------------- Your clock granularity/precision appears to be 1 microseconds. Each test below will take on the order of 1507 microseconds. (= 1507 clock ticks) Increase the size of the arrays if this shows that you are not getting at least 20 clock ticks per test. ------------------------------------------------------------- WARNING -- The above is only a rough guideline. For best results, please be sure you know the precision of your system timer. ------------------------------------------------------------- Function Best Rate MB/s Avg time Min time Max time Copy: 387306.5 0.001418 0.001386 0.001456 Scale: 414238.4 0.001321 0.001296 0.001368 Add: 444668.2 0.001849 0.001811 0.001875 Triad: 447436.7 0.001855 0.001800 0.001949 ------------------------------------------------------------- Solution Validates: avg error less than 1.000000e-13 on all three arrays -------------------------------------------------------------