On Thu, 2008-04-03 at 14:40 +0000, Tang, Changqing wrote: > You have a system, all HCAs have two ports, all port 1 are connected to the > first switch, > all port 2 are connected to the second switch, there is NO link between the > two switches. > We call this system has two physically separated fabrics. If you have a > bridge link > between the two switches, then it becomes a single fabric. > > The same thing for multiple HCAs on nodes. > > The problem is, from MPI side, (and by default), we don't know which port is > on which > fabric, since the subnet prefix is the same. We rely on system admin to > config two > different subnet prefixes for HP-MPI to work.
Yes, these two IB subnets need two different subnet prefixes. (I think it's more than just HP MPI which needs this). -- Hal > No vendor has claimed to support this. > > --CQ > > > -----Original Message----- > > From: Hal Rosenstock [mailto:[EMAIL PROTECTED] > > Sent: Thursday, April 03, 2008 9:32 AM > > To: Tang, Changqing > > Cc: Erez Zilber; Tziporet Koren; ewg@lists.openfabrics.org; > > [EMAIL PROTECTED] > > Subject: RE: [ofa-general] Re: [ewg] OFED March 24 meeting > > summary on OFED 1.4 plans > > > > CQ, > > > > On Thu, 2008-04-03 at 14:27 +0000, Tang, Changqing wrote: > > > Can we address multiple-fabrics (physically separated) support ? > > > > Can you elaborate on what you mean by "physically separated" ? > > > > -- Hal > > > > > > > > > > > --CQ Tang > > > > > > > -----Original Message----- > > > > From: [EMAIL PROTECTED] > > > > [mailto:[EMAIL PROTECTED] On Behalf Of Erez > > > > Zilber > > > > Sent: Thursday, April 03, 2008 8:51 AM > > > > To: Tziporet Koren > > > > Cc: ewg@lists.openfabrics.org; [EMAIL PROTECTED] > > > > Subject: [ofa-general] Re: [ewg] OFED March 24 meeting summary on > > > > OFED 1.4 plans > > > > > > > > > > > > > > *OFED 1.4:* > > > > > 1. Kernel base: since we target 1.4 release to Sep we > > target the > > > > > kernel base to be 2.6.27 > > > > > This is a good target, but we may need to stay with > > > > 2.6.26 if the > > > > > kernel progress will not be aligned. > > > > > > > > > > 2. Suggestions for new features: > > > > > > > > > > * NFS-RDMA > > > > > * Verbs: Reliable Multicast (to be presented at Sonoma) > > > > > * SDP - Zero copy (There was a question on IPv6 support > > > > - seems no > > > > > one interested for now) > > > > > * IPoIB - continue with performance enhancements > > > > > * Xsigo new virtual NIC > > > > > * New vendor HW support - non was reported so far (IBM > > > > and Chelsio > > > > > - do you have something?) > > > > > * OpenSM: > > > > > o Incremental routing > > > > > o Temporary SA DB - to answer queries and a heavy > > > > sweep is done > > > > > o APM - disjoint paths (?) > > > > > o MKey manager (?) > > > > > o Sasha to send more management features > > > > > * MPI: > > > > > o Open MPI 1.3 > > > > > o APM support in MPI > > > > > o mvapich ??? > > > > > * uDAPl > > > > > o Extensions for new APIs (like XRC) - ? > > > > > o uDAPL provider for interop between Windows & Linux > > > > > o 1.2 and 2.0 will stay > > > > > > > > > > > > > As I wrote in an earlier discussion (~2 months ago), we > > plan to add > > > > tgt (SCSI target) with iSCSI over iSER (and TCP of > > > > course) support. The git tree for tgt already exists on the ofa > > > > server. > > > > > > > > Erez > > > > > > > > _______________________________________________ > > > > general mailing list > > > > [EMAIL PROTECTED] > > > > http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general > > > > > > > > To unsubscribe, please visit > > > > http://openib.org/mailman/listinfo/openib-general > > > > > > > _______________________________________________ > > > general mailing list > > > [EMAIL PROTECTED] > > > http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general > > > > > > To unsubscribe, please visit > > > http://openib.org/mailman/listinfo/openib-general > > > > > _______________________________________________ > general mailing list > [EMAIL PROTECTED] > http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general > > To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general _______________________________________________ ewg mailing list ewg@lists.openfabrics.org http://lists.openfabrics.org/cgi-bin/mailman/listinfo/ewg
