Hi folks. I have some old servers running Windows and Linux and I want to create a HPC cluster. However I wanna know if Xen can distribute a single virtual machine along multiple nodes to increase it''s performance. -- Allysson Steve Mota Lacerda Laboratório de Inteligência Computacional - LABICOMP Programa de Pós-Graduação em Engenharia Elétrica – PPGEE Universidade Federal de Minas Gerais – UFMG _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
2009/1/30 Allysson Steve Mota Lacerda <stevelacerda@gmail.com>:> Hi folks. > I have some old servers running Windows and Linux and I want to create a HPC > cluster. However I wanna know if Xen can distribute a single virtual machine > along multiple nodes to increase it''s performance.no. how would that work? an emulated CPU is a single thread of execution, a single threaded work can''t be distributed. if you a multi-cpu VM, then in theory you could process each VCPU on a different node, but then how would you emulate the single RAM space? over the network??? that would brutally kill performance. -- Javier _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Fri, Jan 30, 2009 at 2:35 PM, Javier Guerra <javier@guerrag.com> wrote:> how would that work? an emulated CPU is a single thread of execution, > a single threaded work can''t be distributed. if you a multi-cpu VM, > then in theory you could process each VCPU on a different node, but > then how would you emulate the single RAM space? over the network??? > that would brutally kill performance.That''s my main problem. Another option is emulate an iSCSI storage using iET, run multiple Windows guests and create a cluster between them. However, I don''t know if that''s a goog choice. Did anyone create something like that? Does anyone have another idea? Thanks a lot. -- Allysson Steve Mota Lacerda Laboratório de Inteligência Computacional - LABICOMP Programa de Pós-Graduação em Engenharia Elétrica – PPGEE Universidade Federal de Minas Gerais – UFMG _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Fri, Jan 30, 2009 at 12:31 PM, Allysson Steve Mota Lacerda <stevelacerda@gmail.com> wrote:> Another option is emulate an iSCSI storage using iET, run multiple Windows > guests and create a cluster between them. However, I don''t know if that''s a > goog choice.this is doable, just like clustering real machines. of course, there are very few advantages of using virtual machines instead of real ones. also, that presupones that your (windows) applications do benefit from running on a cluster. -- Javier _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users