From: Franck <fr...@li...> - 2004-06-03 09:50:18
|
=2D----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, i've some problems with SMP on UML. I'm trying to compile vanilla kernel with ULM's SMP support but ALWAYS=20 errors :( tested with : 2.4.26 + 2.6.6 with uml patch and/or skas patch Always crash :( Are you an idea please ? Regards =2D --=20 =46ranck http://www.linuxpourtous.com =2D----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFAvvRG1zwfep5k9qERApSgAJwIc1/IOInan1ZCzptkCNX0fZWOIgCeMNkn 7XWq5cDLXRMhNcMiCMNOfcE=3D =3DBx6/ =2D----END PGP SIGNATURE----- |
From: Jean-Michel C. <jea...@la...> - 2005-11-03 20:28:01
|
Hi alls, Actually, I use UML on one server in my firm. I want to migrate my server= on a new machine which have 2 processors. Is UML can use all processors = ? My kernel version is 2.6.12.2 with skas mode on host. Thank. Jean-Michel Caricand Adresse professionnelle GRETA de Besan=E7on 35 avenue de Montrapon 25000 BESANCON jea...@gr... http://www.greta-besancon.com =0A=0AAcc=E9dez au courrier =E9lectronique de La Poste : www.laposte.net= ; =0A3615 LAPOSTENET (0,34=80/mn) ; t=E9l : 08 92 68 13 50 (0,34=80/mn)=0A= =0A |
From: Alexander C. <ale...@ch...> - 2005-11-03 20:51:15
|
> Actually, I use UML on one server in my firm. I want to migrate my server > on a new machine which have 2 processors. Is UML can use all processors ? > My kernel version is 2.6.12.2 with skas mode on host. My understanding is that each UML instance will see only one processor. You can run twice as many UMLs on a machine (at least as far as CPU time), but each machine only gets one CPU. |
From: Ian Smith-H. <pu...@0x...> - 2005-11-03 21:00:47
|
There is ncpus=<# of desired CPUs> This tells an SMP kernel how many virtual processors to start. in vmlinux --help Alexander Charbonnet wrote: >>Actually, I use UML on one server in my firm. I want to migrate my server >>on a new machine which have 2 processors. Is UML can use all processors ? >>My kernel version is 2.6.12.2 with skas mode on host. > > > My understanding is that each UML instance will see only one processor. You > can run twice as many UMLs on a machine (at least as far as CPU time), but > each machine only gets one CPU. > > > > ------------------------------------------------------- > SF.Net email is sponsored by: > Tame your development challenges with Apache's Geronimo App Server. Download > it for free - -and be entered to win a 42" plasma tv or your very own > Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php > _______________________________________________ > User-mode-linux-user mailing list > Use...@li... > https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user |
From: Alexander C. <ale...@ch...> - 2005-11-03 21:26:40
|
I suppose my information is way out of date, then. Sorry! On Thursday 03 November 2005 02:59 pm, Ian Smith-Heisters wrote: > There is > > ncpus=<# of desired CPUs> > This tells an SMP kernel how many virtual processors to start. > > in vmlinux --help > > Alexander Charbonnet wrote: > >>Actually, I use UML on one server in my firm. I want to migrate my server > >>on a new machine which have 2 processors. Is UML can use all processors ? > >>My kernel version is 2.6.12.2 with skas mode on host. > > > > My understanding is that each UML instance will see only one processor. > > You can run twice as many UMLs on a machine (at least as far as CPU > > time), but each machine only gets one CPU. > > > > > > > > ------------------------------------------------------- > > SF.Net email is sponsored by: > > Tame your development challenges with Apache's Geronimo App Server. > > Download it for free - -and be entered to win a 42" plasma tv or your > > very own Sony(tm)PSP. Click here to play: > > http://sourceforge.net/geronimo.php > > _______________________________________________ > > User-mode-linux-user mailing list > > Use...@li... > > https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user |
From: Ian Smith-H. <pu...@0x...> - 2005-11-03 21:37:59
|
I still don't know how that option works. If they're virtual cpus, do they map to real cpus? Is this option what's required for UML instances to use both CPUs? All I know is the switch is there, I've no idea how it works, and I'd be interested to know. -Ian Alexander Charbonnet wrote: > I suppose my information is way out of date, then. Sorry! > > On Thursday 03 November 2005 02:59 pm, Ian Smith-Heisters wrote: > >>There is >> >>ncpus=<# of desired CPUs> >> This tells an SMP kernel how many virtual processors to start. >> >>in vmlinux --help >> >>Alexander Charbonnet wrote: >> >>>>Actually, I use UML on one server in my firm. I want to migrate my server >>>>on a new machine which have 2 processors. Is UML can use all processors ? >>>>My kernel version is 2.6.12.2 with skas mode on host. >>> >>>My understanding is that each UML instance will see only one processor. >>>You can run twice as many UMLs on a machine (at least as far as CPU >>>time), but each machine only gets one CPU. >>> >>> >>> >>>------------------------------------------------------- >>>SF.Net email is sponsored by: >>>Tame your development challenges with Apache's Geronimo App Server. >>>Download it for free - -and be entered to win a 42" plasma tv or your >>>very own Sony(tm)PSP. Click here to play: >>>http://sourceforge.net/geronimo.php >>>_______________________________________________ >>>User-mode-linux-user mailing list >>>Use...@li... >>>https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user > > > > ------------------------------------------------------- > SF.Net email is sponsored by: > Tame your development challenges with Apache's Geronimo App Server. Download > it for free - -and be entered to win a 42" plasma tv or your very own > Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php > _______________________________________________ > User-mode-linux-user mailing list > Use...@li... > https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user |
From: Alexander C. <ale...@ch...> - 2005-11-03 21:42:40
|
I was under the impression that virtual CPUs in the UML are there for testing purposes, and that the process for any given UML (no matter how many virtual CPUs it had) ran on only one physical CPU. On Thursday 03 November 2005 03:36 pm, Ian Smith-Heisters wrote: > I still don't know how that option works. If they're virtual cpus, do > they map to real cpus? Is this option what's required for UML instances > to use both CPUs? All I know is the switch is there, I've no idea how it > works, and I'd be interested to know. > > -Ian > > Alexander Charbonnet wrote: > > I suppose my information is way out of date, then. Sorry! > > > > On Thursday 03 November 2005 02:59 pm, Ian Smith-Heisters wrote: > >>There is > >> > >>ncpus=<# of desired CPUs> > >> This tells an SMP kernel how many virtual processors to start. > >> > >>in vmlinux --help > >> > >>Alexander Charbonnet wrote: > >>>>Actually, I use UML on one server in my firm. I want to migrate my > >>>> server on a new machine which have 2 processors. Is UML can use all > >>>> processors ? My kernel version is 2.6.12.2 with skas mode on host. > >>> > >>>My understanding is that each UML instance will see only one processor. > >>>You can run twice as many UMLs on a machine (at least as far as CPU > >>>time), but each machine only gets one CPU. > >>> > >>> > >>> > >>>------------------------------------------------------- > >>>SF.Net email is sponsored by: > >>>Tame your development challenges with Apache's Geronimo App Server. > >>>Download it for free - -and be entered to win a 42" plasma tv or your > >>>very own Sony(tm)PSP. Click here to play: > >>>http://sourceforge.net/geronimo.php > >>>_______________________________________________ > >>>User-mode-linux-user mailing list > >>>Use...@li... > >>>https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user > > > > ------------------------------------------------------- > > SF.Net email is sponsored by: > > Tame your development challenges with Apache's Geronimo App Server. > > Download it for free - -and be entered to win a 42" plasma tv or your > > very own Sony(tm)PSP. Click here to play: > > http://sourceforge.net/geronimo.php > > _______________________________________________ > > User-mode-linux-user mailing list > > Use...@li... > > https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user |
From: Jeff D. <jd...@ad...> - 2005-11-03 23:21:13
|
On Thu, Nov 03, 2005 at 04:36:35PM -0500, Ian Smith-Heisters wrote: > I still don't know how that option works. If they're virtual cpus, do > they map to real cpus? Is this option what's required for UML instances > to use both CPUs? All I know is the switch is there, I've no idea how it > works, and I'd be interested to know. We need to make SMP work in skas mode. It works in tt mode, last I heard. Virtual processors are processes on the host, and will be scheduled on as many processors as the host has. Jeff |
From: Blaisorblade <bla...@ya...> - 2005-11-04 03:17:50
|
On Thursday 03 November 2005 22:26, Alexander Charbonnet wrote: > I suppose my information is way out of date, then. Sorry! Not exactly. Nor I nor Jeff (I guess) would trust their data to a UML in SMP mode. Plus, SMP is only for TT mode. And both skas0 and skas3 mode are a lot faster of TT. (skas0 on unpatched host, skas3 is even faster). -- Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894) http://www.user-mode-linux.org/~blaisorblade ___________________________________ Yahoo! Mail: gratis 1GB per i messaggi e allegati da 10MB http://mail.yahoo.it |
From: Dan L. <ar...@co...> - 2004-06-03 13:48:24
|
From my understanding, UML does not support SMP currently. On the UML Session that is... the host is fine. Which are you doing? From the sounds of it, you tested with the UML patch AND the skas patch... those two are mutually exclusive. SKAS patch is for the host kernel, the UML patch is for the source that is going to make the UML Session kernel. --Dan Franck wrote: >-----BEGIN PGP SIGNED MESSAGE----- >Hash: SHA1 > >Hello, > >i've some problems with SMP on UML. >I'm trying to compile vanilla kernel with ULM's SMP support but ALWAYS >errors :( > >tested with : >2.4.26 + 2.6.6 with uml patch and/or skas patch >Always crash :( > >Are you an idea please ? > >Regards >- -- >Franck > >http://www.linuxpourtous.com >-----BEGIN PGP SIGNATURE----- >Version: GnuPG v1.2.4 (GNU/Linux) > >iD8DBQFAvvRG1zwfep5k9qERApSgAJwIc1/IOInan1ZCzptkCNX0fZWOIgCeMNkn >7XWq5cDLXRMhNcMiCMNOfcE= >=Bx6/ >-----END PGP SIGNATURE----- > > > >------------------------------------------------------- >This SF.Net email is sponsored by the new InstallShield X. >>From Windows to Linux, servers to mobile, InstallShield X is the one >installation-authoring solution that does it all. Learn more and >evaluate today! http://www.installshield.com/Dev2Dev/0504 >_______________________________________________ >User-mode-linux-user mailing list >Use...@li... >https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user > > > ----------- This email message and any attachment may contain Confidential or Protected Health Information. If you are not the intended recipient please notify us immediately at 480-648-4545 and delete the message. |
From: Franck <fr...@li...> - 2004-06-03 14:30:46
|
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 hi, > From my understanding, UML does not support SMP currently. HuUmmmmm ... Are you sure ? http://www.linuxdevcenter.com/pub/a/ linux/2003/03/03/uml_smp.html I don't understand very well english, i'm perhaps in error ! > On the UML Session that is... the host is fine. > Which are you doing? From the sounds of it, you tested with the UML > patch AND the skas patch... those two are mutually exclusive. Yes, on host skas patch and UML vhost > SKAS patch is for the host kernel, the UML patch is for the source that > is going to make the UML Session kernel. Yes, i've read this : http://www.user-mode-linux.org/~blaisorblade/ ++ > --Dan > > Franck wrote: > >-----BEGIN PGP SIGNED MESSAGE----- > >Hash: SHA1 > > > >Hello, > > > >i've some problems with SMP on UML. > >I'm trying to compile vanilla kernel with ULM's SMP support but ALWAYS > >errors :( > > > >tested with : > >2.4.26 + 2.6.6 with uml patch and/or skas patch > >Always crash :( > > > >Are you an idea please ? > > > >Regards > >- -- > >Franck > > > >http://www.linuxpourtous.com > >-----BEGIN PGP SIGNATURE----- > >Version: GnuPG v1.2.4 (GNU/Linux) > > > >iD8DBQFAvvRG1zwfep5k9qERApSgAJwIc1/IOInan1ZCzptkCNX0fZWOIgCeMNkn > >7XWq5cDLXRMhNcMiCMNOfcE= > >=Bx6/ > >-----END PGP SIGNATURE----- > > > > > > > >------------------------------------------------------- > >This SF.Net email is sponsored by the new InstallShield X. > > > >>From Windows to Linux, servers to mobile, InstallShield X is the one > > > >installation-authoring solution that does it all. Learn more and > >evaluate today! http://www.installshield.com/Dev2Dev/0504 > >_______________________________________________ > >User-mode-linux-user mailing list > >Use...@li... > >https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user > > ----------- > This email message and any attachment may contain Confidential or > Protected Health Information. If you are not the intended recipient > please notify us immediately at 480-648-4545 and delete the message. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFAvzYJ1zwfep5k9qERAsRiAKCpfewmhxNfDvta7VqMjraw3vp/YQCfWlRZ g88GwPEstpxRx7Gzyrsw4+Q= =lh2a -----END PGP SIGNATURE----- |
From: BlaisorBlade <bla...@ya...> - 2004-06-05 16:37:49
|
Alle 16:30, gioved=EC 3 giugno 2004, Franck ha scritto: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > hi, > > > From my understanding, UML does not support SMP currently. > > HuUmmmmm ... Are you sure ? http://www.linuxdevcenter.com/pub/a/ > linux/2003/03/03/uml_smp.html > I don't understand very well english, i'm perhaps in error ! I didn't read it however I agree with you and with him; UML with CONFIG_SMP= on=20 *used* to work well, but *broke again later* (i.e. does not compile) and=20 nobody had the time to fix it (even because you can run an UML UP on a SMP= =20 host; it will only use one processor, obviously, but will work). I can say= =20 this for sure, there are lots of comments in the sources which make clear=20 that it won't compile and won't work. =2D-=20 Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 |
From: Franck <fr...@li...> - 2004-06-04 13:46:37
|
=2D----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > i've some problems with SMP on UML. > I'm trying to compile vanilla kernel with ULM's SMP support but ALWAYS > errors :( > > tested with : > 2.4.26 + 2.6.6 with uml patch and/or skas patch > Always crash :( > > Are you an idea please ? Nobody know about SMP with UML ? :( ++ =2D --=20 =46ranck http://www.linuxpourtous.com =2D----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFAwH031zwfep5k9qERAtDQAKCjAnwhlnZce1KPSxQ9mPp17yNcwgCbBIMq nindZLOtvydOac/X8sFXSDA=3D =3DyUIf =2D----END PGP SIGNATURE----- |