On 03/31/2011 02:36 AM, Mark Wendt wrote: > On 03/30/2011 05:02 PM, Rafael Skodlar wrote: >> ... snip
> Rafael, > > I'm afraid to ask, knowing how Oracle seems to be managing all the sun > products - is the VirtualBox a freebie, or does it fall under the Oracle > "We have to charge way too much to keep up the Oracle name" banner? > > Mark You guys ask questions too early for me (in PST :-). I believe that all that's necessary has been said about Virtualbox by other knowledgeable people. I'm not worried too much for Oracle dropping the ball here. For now we can ride the wave while open source catches up; there's development going on too. I only run Linux, FreeBSD, and Solaris VMs inside my Linux systems. However, we still haven't addressed the original question about running multiple instances of EMC2 on the same hardware. Two options are possible here IMO: - expand EMC2 in such a way to present itself as running another instance of itself on different CPU core(s) virtually like a thread, - or run independent instances of EMC in VMs in different CPU core(s) and selected set of peripherals. Either approach is not easy to do as it requires a kernel to handle that in RT on the lower level. Developing kernel is done elsewhere, EMC on the other hand is "local" to this community. The effort is huge especially with RT requirements for the OSS development model. As others have suggested, a number of small footprint motherboards can be stacked to run independent EMCs where that is needed. That still doesn't solve sync problem. At least not easily. There was a time when I worked for a defunct startup in late 90's where office space was at a premium. To solve computer space problem I stacked 4 motherboards, low profile ethernet cards, hard drives, and power supplies in a large modified tower case. I used threaded rods to space the motherboards. That of course is not practical when you need to replace board(s) in the middle but worked for months just fine. Ethernet ports were not common on motherboards in those days. Monitor and keyboard were switched as needed. Redhat linux was stable enough so there was no need for frequent updates. Connecting CD drive was a bit tricky but I never shorted any wires :-) Not UL approved I know, but hey, Google started with cabinets of motherboards in even worse setup from what I can see in Computer Museum. That was before blade computers came about which we could not afford anyway... It should not be too hard to build a relatively small box with a number of EMCs: PSUs made for 1U size boxes, mini-itx motherboards with parallel port connector on the back or flat cable, and 2.5" hard drives. -- Rafael ------------------------------------------------------------------------------ Create and publish websites with WebMatrix Use the most popular FREE web apps or write code yourself; WebMatrix provides all the features you need to develop and publish your website. http://p.sf.net/sfu/ms-webmatrix-sf _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
