Hi,
I have an fortran application (CAMx model) that runs fine on my machine witout
XEN.
If I start xend from init scripts (so xen is running from begin) the
applications simply craches.
strace ./CAMx.mrpo.1.8.i_linux
execve("./CAMx.mrpo.1.8.i_linux",
["./CAMx.mrpo.1.8.i_linux"], [/* 33 vars */]) = -1 ENOMEM (Cannot
allocate memory)
+++ killed by SIGKILL +++
If I doen''t start xend from init scripts the application runs fine
(until I start it).
I attch my kernel (dom0) config file is attched and the compilled application is
on:
http://neei.uevora.pt/~lr/CAMx.mrpo.1.8.i_linux and the source came from
http://www.camx.com/
It was compiled with the intel fortran compiler.
I''m using binary 3.0.2-2 version Xen downloaded from xensource.
The application some time runs on domU and some doens''t (mostly craches
if there another copy running - of it
or any other fortran application);
Could some one please help me.
Thanks,
Luis
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> -----Original Message----- > From: xen-users-bounces@lists.xensource.com > [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of > Luis Rodrigues > Sent: 11 May 2006 14:10 > To: xen-users@lists.xensource.com > Subject: [Xen-users] Xen Killing fortran app?! > > Hi, > > I have an fortran application (CAMx model) that runs fine on > my machine witout XEN. > If I start xend from init scripts (so xen is running from > begin) the applications simply craches. > > strace ./CAMx.mrpo.1.8.i_linux > execve("./CAMx.mrpo.1.8.i_linux", > ["./CAMx.mrpo.1.8.i_linux"], [/* 33 vars */]) = -1 ENOMEM > (Cannot allocate memory) > +++ killed by SIGKILL +++How much memory does the app actually need (do "size ./CAMx*")? It sounds like it could actually be running out of memory, perhaps? -- Mats _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
size CAMx.mrpo.1.8.i_linux
text data bss dec hex filename
2968811 1189952 1287728136 1291886899 4d00a133
CAMx.mrpo.1.8.i_linux
On dom0 I get:
free
total used free shared buffers cached
Mem: 1009664 778684 230980 0 17740 557744
-/+ buffers/cache: 203200 806464
Swap: 0 0 0
on domU
total used free shared buffers cached
Mem: 1043124 868752 174372 0 47328 568616
-/+ buffers/cache: 252808 790316
Swap: 511992 4 511988
I have 2GB, 1 for dom0 and 1 form domU.
It is running fine on domU and craches on dom0.
I really doen''t understand these nunbers, is it memory?
Luis
On Thu, 11 May 2006 15:34:17 +0200
"Petersson, Mats" <Mats.Petersson@amd.com> wrote:
> > -----Original Message-----
> > From: xen-users-bounces@lists.xensource.com
> > [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of
> > Luis Rodrigues
> > Sent: 11 May 2006 14:10
> > To: xen-users@lists.xensource.com
> > Subject: [Xen-users] Xen Killing fortran app?!
> >
> > Hi,
> >
> > I have an fortran application (CAMx model) that runs fine on
> > my machine witout XEN.
> > If I start xend from init scripts (so xen is running from
> > begin) the applications simply craches.
> >
> > strace ./CAMx.mrpo.1.8.i_linux
> > execve("./CAMx.mrpo.1.8.i_linux",
> > ["./CAMx.mrpo.1.8.i_linux"], [/* 33 vars */]) = -1 ENOMEM
> > (Cannot allocate memory)
> > +++ killed by SIGKILL +++
> How much memory does the app actually need (do "size ./CAMx*")?
>
> It sounds like it could actually be running out of memory, perhaps?
>
> --
> Mats
>
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Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users
> -----Original Message----- > From: xen-users-bounces@lists.xensource.com > [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of > Luis Rodrigues > Sent: 11 May 2006 14:46 > To: xen-users@lists.xensource.com > Subject: Re: [Xen-users] Xen Killing fortran app?! > > > size CAMx.mrpo.1.8.i_linux > text data bss dec hex filename > 2968811 1189952 1287728136 1291886899 4d00a133 > CAMx.mrpo.1.8.i_linux > > On dom0 I get: > > free > total used free shared > buffers cached > Mem: 1009664 778684 230980 0 > 17740 557744 > -/+ buffers/cache: 203200 806464 > Swap: 0 0 0 > > on domU > > total used free shared > buffers cached > Mem: 1043124 868752 174372 0 > 47328 568616 > -/+ buffers/cache: 252808 790316 > Swap: 511992 4 511988 > > I have 2GB, 1 for dom0 and 1 form domU.That is your problem. If you give more than 1.3GB (plus a bit) to the domain you want to run CAMx in, you''ll be fine. The numbers are: Text - the size of the code (the compiled fortran code + libraries and stuff) Data - the size of data (variables that have a value other than zero, mainly) BSS - block-storage section (variables that are either undefined or zero) Add those up and you get "dec", which stands for "total size in decimal", and convert it to hexadecimal, and you get "hex". Filename is obvious enough, I suppose. The "plus a bit" means enough memory for the operating system, shell, graphical user interface etc. You probably want at least 128MB for this, more will not hurt, except that the other domain ends up with less, and that''s of course going to affect things in some way. Another option is to make the swap larger. This may work, but only if the BSS section is over-sized because the variables are not really used all the time - for example, there may be an array that can hold 1000 elements, but in your usage, it''s only used for 400 elements. In this case, 60% of this variable would be fine to just "have space for", rather than actually residing in RAM. I can''t say if this works or not for your application, as I''m not quite sure what the design of the application is (and I''m not really going to spend several hours trying to figure out what does what in some fortran code, a language that I''m not very good at understanding in the first place). -- Mats> > It is running fine on domU and craches on dom0. > > I really doen''t understand these nunbers, is it memory? > > Luis > > > > > On Thu, 11 May 2006 15:34:17 +0200 > "Petersson, Mats" <Mats.Petersson@amd.com> wrote: > > > > -----Original Message----- > > > From: xen-users-bounces@lists.xensource.com > > > [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Luis > > > Rodrigues > > > Sent: 11 May 2006 14:10 > > > To: xen-users@lists.xensource.com > > > Subject: [Xen-users] Xen Killing fortran app?! > > > > > > Hi, > > > > > > I have an fortran application (CAMx model) that runs fine on my > > > machine witout XEN. > > > If I start xend from init scripts (so xen is running from > > > begin) the applications simply craches. > > > > > > strace ./CAMx.mrpo.1.8.i_linux > > > execve("./CAMx.mrpo.1.8.i_linux", > > > ["./CAMx.mrpo.1.8.i_linux"], [/* 33 vars */]) = -1 ENOMEM (Cannot > > > allocate memory) > > > +++ killed by SIGKILL +++ > > How much memory does the app actually need (do "size ./CAMx*")? > > > > It sounds like it could actually be running out of memory, perhaps? > > > > -- > > Mats > > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Ok. Thanks. On Thu, 11 May 2006 15:59:55 +0200 "Petersson, Mats" <Mats.Petersson@amd.com> wrote:> > -----Original Message----- > > From: xen-users-bounces@lists.xensource.com > > [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of > > Luis Rodrigues > > Sent: 11 May 2006 14:46 > > To: xen-users@lists.xensource.com > > Subject: Re: [Xen-users] Xen Killing fortran app?! > > > > > > size CAMx.mrpo.1.8.i_linux > > text data bss dec hex filename > > 2968811 1189952 1287728136 1291886899 4d00a133 > > CAMx.mrpo.1.8.i_linux > > > > On dom0 I get: > > > > free > > total used free shared > > buffers cached > > Mem: 1009664 778684 230980 0 > > 17740 557744 > > -/+ buffers/cache: 203200 806464 > > Swap: 0 0 0 > > > > on domU > > > > total used free shared > > buffers cached > > Mem: 1043124 868752 174372 0 > > 47328 568616 > > -/+ buffers/cache: 252808 790316 > > Swap: 511992 4 511988 > > > > I have 2GB, 1 for dom0 and 1 form domU. > > That is your problem. If you give more than 1.3GB (plus a bit) to the > domain you want to run CAMx in, you''ll be fine. > > The numbers are: > Text - the size of the code (the compiled fortran code + libraries and > stuff) > Data - the size of data (variables that have a value other than zero, > mainly) > BSS - block-storage section (variables that are either undefined or > zero) > > Add those up and you get "dec", which stands for "total size in > decimal", and convert it to hexadecimal, and you get "hex". Filename is > obvious enough, I suppose. > > The "plus a bit" means enough memory for the operating system, shell, > graphical user interface etc. You probably want at least 128MB for this, > more will not hurt, except that the other domain ends up with less, and > that''s of course going to affect things in some way. > > Another option is to make the swap larger. This may work, but only if > the BSS section is over-sized because the variables are not really used > all the time - for example, there may be an array that can hold 1000 > elements, but in your usage, it''s only used for 400 elements. In this > case, 60% of this variable would be fine to just "have space for", > rather than actually residing in RAM. I can''t say if this works or not > for your application, as I''m not quite sure what the design of the > application is (and I''m not really going to spend several hours trying > to figure out what does what in some fortran code, a language that I''m > not very good at understanding in the first place). > > -- > Mats > > > > It is running fine on domU and craches on dom0. > > > > I really doen''t understand these nunbers, is it memory? > > > > Luis > > > > > > > > > > On Thu, 11 May 2006 15:34:17 +0200 > > "Petersson, Mats" <Mats.Petersson@amd.com> wrote: > > > > > > -----Original Message----- > > > > From: xen-users-bounces@lists.xensource.com > > > > [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Luis > > > > Rodrigues > > > > Sent: 11 May 2006 14:10 > > > > To: xen-users@lists.xensource.com > > > > Subject: [Xen-users] Xen Killing fortran app?! > > > > > > > > Hi, > > > > > > > > I have an fortran application (CAMx model) that runs fine on my > > > > machine witout XEN. > > > > If I start xend from init scripts (so xen is running from > > > > begin) the applications simply craches. > > > > > > > > strace ./CAMx.mrpo.1.8.i_linux > > > > execve("./CAMx.mrpo.1.8.i_linux", > > > > ["./CAMx.mrpo.1.8.i_linux"], [/* 33 vars */]) = -1 ENOMEM (Cannot > > > > allocate memory) > > > > +++ killed by SIGKILL +++ > > > How much memory does the app actually need (do "size ./CAMx*")? > > > > > > It sounds like it could actually be running out of memory, perhaps? > > > > > > -- > > > Mats > > > > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > > http://lists.xensource.com/xen-users > > > > > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users