1 / 11

Microbenchmarking IHPCL clusters

Microbenchmarking IHPCL clusters. Neil Bright 3/26/2001. fd = open() buffer = mmap(fd, size) close(fd) x = buffer[4] munmap(buffer, size). File I/O vs. mmap. fd = open() read(fd, buffer, size) x = buffer[4] close(fd). File I/O vs. mmap (cont.). Memory Latency (nanoseconds).

toyah
Download Presentation

Microbenchmarking IHPCL clusters

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Microbenchmarking IHPCL clusters Neil Bright 3/26/2001

  2. fd = open() buffer = mmap(fd, size) close(fd) x = buffer[4] munmap(buffer, size) File I/O vs. mmap • fd = open() • read(fd, buffer, size) • x = buffer[4] • close(fd)

  3. File I/O vs. mmap (cont.)

  4. Memory Latency (nanoseconds)

  5. Memory Bandwidth (MB/sec)

  6. PCI 2.0 33Mhz, 32 bit • 132 Mbytes/sec • PCI 2.0 66Mhz, 64 bit • 528 Mbytes/sec • SCSI 160 • 160 Mbytes/sec • Quantum Atlas 10KII SCSI160 • 60 Mbytes/sec • Gigabit Ethernet • 125 Mbytes/sec

  7. 2.2 Myrinet 2.2 Gigabit Ethernet 2.4 Gigabit Ethernet Network Hardware • TCP Bandwidth • UDP Bandwidth • TCP Latency

  8. TCP Bandwidth Throughput CPU utilization (Mb/sec) Sender Receiver 256.09 48.37 54.33 Linux 2.2.16-3smp gm 1.2.3 212.23 28.20 27.46 Linux 2.2.16-3smp e1000 3.0.7 273.70 2.09 0.35 Linux 2.4.3-pre4-smp-pae e1000 3.0.7 Confidence Intervals Throughput Local CPU Remote CPU 0.00% 0.00% 0.00% Linux 2.2.16-3smp gm 1.2.3 0.00% 0.00% 0.00% Linux 2.2.16-3smp e1000 3.0.7 3.50% 50.60% 537.30% Linux 2.4.3-pre4-smp-pae e1000 3.0.7 8,192 byte messages 57,344 byte buffers

  9. UDP Bandwidth

  10. TCP Latency

  11. Impact of driver on performance Throughput CPU utilization (Mb/sec) Sender Receiver 167.67 35.81 51.19 Linux 2.2.16-3smp e1000 2.0.6 186.55 31.70 48.30 Linux 2.2.16-3smp e1000 2.5.14 212.23 28.20 27.46 Linux 2.2.16-3smp e1000 3.0.7 8,192 byte messages 57,344 byte buffers

More Related