[Myricom help #8760] Re: [Myrinet] bandwidth of myrinet2k
Patrick Geoffray <[email protected]>
| Newsgroups | gmane.network.myrinet.general |
|---|---|
| Organization | Myricom Inc |
| Message-ID | <[email protected]> |
chyyuu wrote: > > hi: > Can anyone tell me the exact max/sustained hardware/GM/MPICH-GM bandwidth of > myrinet2k with with switch M3-E64 and net card M3M-PCI64C-2 with Lanai9.2 , > assumed the host node has PCI64bit/66Mhz slot , very high speed CPU(such as > Athlon xp 1900+ or P4 2.2Ghz) and enough memory (DDR memory or RAMBUS memory). CPU speed or memory speed/size have no impact on bandwidth. PCI does a lot, and it's not because it's written 64/66 that you can push 500 MB/s. Which PCI chipset are you using ? What is the output of "gm_debug -L" ? Look at Greg's page at http://www.conservativecomputer.com/myrinet/perf.html You can get 250 MB/s with your Myrinet hardware if the PCI is good enough. Patrick ---------------------------------------------------------- | Patrick Geoffray, Ph.D. [email protected] | Myricom, Inc. http://www.myri.com | Cell: 865-389-8852 685 Emory Valley Rd (B) | Phone: 865-425-0978 Oak Ridge, TN 37830 ----------------------------------------------------------