Hi I modified the rootdelay to 2000. And compiled MARSS with 16, 24 and 64 cores respectively.
The result is: 16-core is quite fine and is working well. 24-core is not stable, not every time the system can boot, sometimes it doesn't boot. For 64-core, the boot fails and the screen output is like Best Wen On Tue, Aug 18, 2015 at 1:48 AM, Brendan Fitzgerald <[email protected] > wrote: > http://marss86.org/~marss86/index.php/QEMU_Tips > > On Mon, Aug 17, 2015 at 1:17 PM, Wen Zong <[email protected]> > wrote: > >> Hi >> >> Finally I was able to increase the size of the image and copied all >> parsec files to the image and now try to boot the 64-core system. >> >> But the guest Ubuntu 12.04 (precise) cannot boot with 64-core setup. >> And the output is like this >> [image: Inline image 1] >> This seems to be the problem of the guest kernel itself. >> >> >> The ubuntu-natty.qcow2 also doesn't work with 64-core whose output is >> like this >> [image: Inline image 2] >> >> I guess the guest kernel needs to be modified to make it work on 64-core >> processor. >> >> Best >> Wen >> >> >> >> >> >> On Sun, Aug 16, 2015 at 10:29 PM, Brendan Fitzgerald < >> [email protected]> wrote: >> >>> http://marss86.org/~marss86/index.php/QEMU_Tips >>> >>> On Sun, Aug 16, 2015 at 10:13 AM, Wen Zong <[email protected]> >>> wrote: >>> >>>> Hi >>>> >>>> My desktop connects the network through a proxy which makes the network >>>> setup tricky for me, so I gave up this morning. >>>> >>>> I'm now trying another approach by creating a image of ubuntu 12.04 >>>> (precise) and then copy the parsec files and ./create_checkpoint etc. into >>>> my new image. >>>> I first copy the content from parsecROI.img to my host with the help >>>> kpartx command. >>>> >>>> Now the problem is that when I copy the parsec folder from my host to >>>> the new image, it doesn't have enough space. >>>> I've tried to increase the rootsize option when invoking >>>> ubuntu-vm-builder but the image size is the same as when it is set to 5120. >>>> And after mounting, the image is a 4.1GB volume. >>>> Here's my configuration: >>>> >>>> [DEFAULT] >>>> arch = amd64 >>>> suite = precise >>>> rootsize = *10120 # I increased this but the raw image size doesn't >>>> change compared with 5120* >>>> addpkg = openssh-server, openssh-client, vim >>>> >>>> >>>> Do you know how to increase the size of the image? >>>> >>>> Many thanks >>>> Wen >>>> >>>> >>>> On Sun, Aug 16, 2015 at 9:43 PM, Brendan Fitzgerald < >>>> [email protected]> wrote: >>>> >>>>> You need to first convert the image to qcow2, since the parsecROI.img >>>>> is read-only. >>>>> >>>>> You'll also need to enable networking, there are a bunch of sites that >>>>> say how to do this. >>>>> >>>>> On Sun, Aug 16, 2015 at 5:13 AM, Wen Zong <[email protected]> >>>>> wrote: >>>>> >>>>>> Hi Brendan >>>>>> >>>>>> Thank you for the suggestion. >>>>>> >>>>>> Do you mean I do the upgrade in the guest OS? >>>>>> I tried this in the provided parsecROI.img and cannot upgrade >>>>>> anything. >>>>>> The IP address in parsecROI.img is 127.0.0.1 which is different from >>>>>> the default qemu network setting. >>>>>> I'm not sure if this is this the problem of the network configuration. >>>>>> >>>>>> Best >>>>>> Wen >>>>>> >>>>>> >>>>>> >>>>>> On Sat, Aug 15, 2015 at 11:10 PM, Brendan Fitzgerald < >>>>>> [email protected]> wrote: >>>>>> >>>>>>> You can update the image using apt-get dist-upgrade. >>>>>>> >>>>>>> I know kernel version 3.0 works fine with Marss, I can't remember >>>>>>> off the top of my head if 3.2 works, but I know 3.16 doesn't, so just be >>>>>>> aware of how recent of an Ubuntu release you go to. >>>>>>> >>>>>>> On Sat, Aug 15, 2015 at 4:35 AM, Wen Zong <[email protected]> >>>>>>> wrote: >>>>>>> >>>>>>>> Hi all >>>>>>>> >>>>>>>> I'm try to simulate a 64-core system and run Parsec benchmark to >>>>>>>> test its performance. >>>>>>>> However the provided parsec image is using ubuntu 9.04, which >>>>>>>> supports at most 16 cores. >>>>>>>> Could someone give some suggestion to increase the maximal number >>>>>>>> of supported cores to 64? >>>>>>>> >>>>>>>> One possible solution is that, I can create the disk image using >>>>>>>> higher version of ubuntu which is supposed to support more 64 cores. >>>>>>>> But I >>>>>>>> don't have the modified Parsec benchmark in which the PTLcalls are >>>>>>>> inserted to mark the Region of Interest. >>>>>>>> >>>>>>>> Very appreciated if you can give some advices. >>>>>>>> >>>>>>>> Best regards >>>>>>>> Wen >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> http://www.marss86.org >>>>>>>> Marss86-Devel mailing list >>>>>>>> [email protected] >>>>>>>> https://www.cs.binghamton.edu/mailman/listinfo/marss86-devel >>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >
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