From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <418C03CD.2080501@sgi.com> Date: Fri, 05 Nov 2004 16:50:53 -0600 From: Ray Bryant MIME-Version: 1.0 Subject: manual page migration, revisited... Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Marcelo Tosatti , Hirokazu Takahashi Cc: linux-mm List-ID: Marcelo and Takahashi-san (and anyone else who would like to comment), This is a little off topic, but this is as good of thread as any to start this discussion on. Feel free to peel this off as a separate discussion thread asap if you like. We have a requirement (for a potential customer) to do the following kind of thing: (1) Suspend and swap out a running process so that the node where the process is running can be reassigned to a higher priority job. (2) Resume and swap back in those suspended jobs, restoring the original memory layout on the original nodes, or (3) Resume and swap back in those suspended jobs on a new set of nodes, with as similar topological layout as possible. (It's also possible we may want to just move the jobs directly from one set of nodes to another without swapping them out first. This is all in the context of a batch scheduler being used to run jobs on a large paralell machine. As I understand it, there are various patches floating around (including the migration code that you are working on, the memory hotplug removal code, etc) that do parts of this, but I've had a little trouble piecing together the status of those various patches and where to get them. (e. g. where do I get the latest migration cache code?). There was also a thread in early April 2004 on this list about manual page migration, I think, but I don't know where that went, if anywhere (that would satisfy requirement 3.) So the question I am asking, I guess, is where would you suggest we start on an implementation for something like the above? Which existing bits and peices can I pick up, if anything, from your migration cache work and or the memory hotplug work, do you think? Or, which patches should I be looking at for ideas? I'm not asking you to >>do<< this work, of course, I'm just trying to get a start on the above and not unecessarily duplicate anyone's previous work in this area. Any pointers or advice would be greatly appeciated. -- Best Regards, Ray ----------------------------------------------- Ray Bryant 512-453-9679 (work) 512-507-7807 (cell) raybry@sgi.com raybry@austin.rr.com The box said: "Requires Windows 98 or better", so I installed Linux. ----------------------------------------------- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org