OpenMPIAndXgrid
Originally published on macresearch.org, around 2006. Reproduced from the author's archive; some links may no longer resolve.
size = 0, bandwidth = 0.000 MB/s latency = 135.031 usec., size = 1, bandwidth = 0.007 MB/s latency = 127.969 usec., size = 2, bandwidth = 0.014 MB/s latency = 132.470 usec., size = 4, bandwidth = 0.025 MB/s latency = 154.469 usec., size = 8, bandwidth = 0.061 MB/s latency = 124.681 usec., size = 16, bandwidth = 0.123 MB/s latency = 123.920 usec., size = 32, bandwidth = 0.249 MB/s latency = 122.650 usec., size = 64, bandwidth = 0.485 MB/s latency = 125.930 usec., size = 128, bandwidth = 0.935 MB/s latency = 130.620 usec., size = 256, bandwidth = 1.938 MB/s latency = 126.002 usec., size = 512, bandwidth = 3.531 MB/s latency = 138.302 usec., size = 1024, bandwidth = 7.765 MB/s latency = 125.771 usec., size = 2048, bandwidth = 16.652 MB/s latency = 117.290 usec., size = 4096, bandwidth = 33.392 MB/s latency = 116.980 usec., size = 8192, bandwidth = 57.058 MB/s latency = 136.921 usec., size = 16384, bandwidth = 93.568 MB/s latency = 166.991 usec., size = 32768, bandwidth = 110.980 MB/s latency = 281.582 usec., size = 65536, bandwidth = 110.892 MB/s latency = 563.612 usec., size = 131072, bandwidth = 160.956 MB/s latency = 776.610 usec., size = 262144, bandwidth = 210.162 MB/s latency = 1189.561 usec., size = 524288, bandwidth = 160.634 MB/s latency = 3112.669 usec., size = 1048576, bandwidth = 289.705 MB/s latency = 3451.791 usec.,