https://community.intel.com/t5/Intel-MPI-Library/does-the-intel-5000x-MCH-support-PCI-Express-peer-to-peer/m-p/894632#M2092 <P>Hello, all, I'm not sure if this is the right forum, but I figured HPCC guys might know the answer : we're trying to build an application with two PCI Express cards in a Dell 2950, which uses the 5000X MCH. The question is if the MCH will allow peer-to-peer writes. </P> <P>I looked thru the MCH datasheet, but it doesn't come out and say it, though there are some hints. Can someone confirm if peer-to-peer is "officially" supported ? Does it provide normal, close-to-hardware latencies, or is it a wimpy path that's not meant for real heavy duty use ? Does using peer-to-peer detract from the hostor DRAM bandwidth (say if no-snoop is set in the write requests) ? </P> <P>Please let me know,orif there is some other forum or method to get this info. </P> <P>Regards, Jon Sreekanth, <A href="mailto:sreekanth@accoladetechnology.com">sreekanth@accoladetechnology.com</A> </P> Fri, 29 Aug 2008 15:05:18 GMT jsreekanth 2008-08-29T15:05:18Z https://community.intel.com/t5/Intel-MPI-Library/does-the-intel-5000x-MCH-support-PCI-Express-peer-to-peer/m-p/894632#M2092 <P>Hello, all, I'm not sure if this is the right forum, but I figured HPCC guys might know the answer : we're trying to build an application with two PCI Express cards in a Dell 2950, which uses the 5000X MCH. The question is if the MCH will allow peer-to-peer writes. </P> <P>I looked thru the MCH datasheet, but it doesn't come out and say it, though there are some hints. Can someone confirm if peer-to-peer is "officially" supported ? Does it provide normal, close-to-hardware latencies, or is it a wimpy path that's not meant for real heavy duty use ? Does using peer-to-peer detract from the hostor DRAM bandwidth (say if no-snoop is set in the write requests) ? </P> <P>Please let me know,orif there is some other forum or method to get this info. </P> <P>Regards, Jon Sreekanth, <A href="mailto:sreekanth@accoladetechnology.com">sreekanth@accoladetechnology.com</A> </P> Fri, 29 Aug 2008 15:05:18 GMT https://community.intel.com/t5/Intel-MPI-Library/does-the-intel-5000x-MCH-support-PCI-Express-peer-to-peer/m-p/894632#M2092 jsreekanth 2008-08-29T15:05:18Z https://community.intel.com/t5/Intel-MPI-Library/does-the-intel-5000x-MCH-support-PCI-Express-peer-to-peer/m-p/894633#M2093 <P>Disappointing to see lots of views, but no replies to this topic. Please let me know if I should ask on some other forum, or if there is somebody at Intel who can help. </P> <P>Regards, Jon Sreekanth, <A href="mailto:sreekanth@accoladetechnology.com">sreekanth@accoladetechnology.com</A> </P> Thu, 04 Sep 2008 14:31:49 GMT https://community.intel.com/t5/Intel-MPI-Library/does-the-intel-5000x-MCH-support-PCI-Express-peer-to-peer/m-p/894633#M2093 jsreekanth 2008-09-04T14:31:49Z