My os is x86_64, the kernel is 2.6.18-274.el5-x86_64.
Is there anything else I should check?
---------------------------------
The following is my hardware list
Processor: SandyBridge-EP
Memory: LV DDR3 1333 RDIMMs
------------------ Original ------------------
From: "bill4carson"<bill4car...@gmail.com>;
Date: Mon, Nov 14, 2011 04:42 PM
To: "Easley"<ugi...@gmail.com>;
Cc: "libhugetlbfs-devel"<libhugetlbfs-devel@lists.sourceforge.net>;
Subject: Re: [Libhugetlbfs-devel] How to change the hugepagesize?
On 2011年11月14日 16:00, Easley wrote:
>
> I add "hugepagesz=1M hugepages=32" to grub.conf.
> The "hugepagesz=16M" doesn't take effect.
> The "hugepages=32" take effect.
> What type is hardware support that?
>
> Any help will be appreciated.
>
> --Easley
hugepagesz=16M only work for x86_64 platform,
check arch/x86/mm/hugetlbpage.c setup_hugepagesz
guess your machine is an 32 bit x86.
> ------------------ Original ------------------
> *From: * "bill4carson"<bill4car...@gmail.com>;
> *Date: * Mon, Nov 14, 2011 09:47 AM
> *To: * "Easley"<ugi...@gmail.com>;
> *Cc: * "libhugetlbfs-devel"<libhugetlbfs-devel@lists.sourceforge.net>;
> *Subject: * Re: [Libhugetlbfs-devel] How to change the hugepagesize?
>
>
> On 2011年11月10日 17:27, Easley wrote:
> >
> > Thank you very much.
> > I still have a question. How can I know that have been take effect?
> > I take steps as follow:
> > ------------------
> > mkdir /hugetlb
> > mount -t hugetlbfs hugetlbfs /hugetlb
> > HUGETLB_MORECORE=yes LD_PRELOAD=libhugetlbfs.so hugepagesz=16M
> > hugepages=32 ./myprogram
> > ------------------
> > That's right?
> No
>
> hugepagesz=16M hugepages=32 is for kernel boot command line
>
> HUGETLB_MORECORE=yes LD_PRELOAD=libhugetlbfs.so will let malloc get huge
> page based memory.
>
>
>
> > Easley
> > ------------------ Original ------------------
> > *From: * "bill4carson"<bill4car...@gmail.com>;
> > *Date: * Thu, Nov 10, 2011 11:24 AM
> > *To: * "Easley"<ugi...@gmail.com>;
> > *Cc: * "libhugetlbfs-devel"<libhugetlbfs-devel@lists.sourceforge.net>;
> > *Subject: * Re: [Libhugetlbfs-devel] How to change the hugepagesize?
> >
> >
> > On 2011年11月10日 10:41, Easley wrote:
> > >
> > > Hi,
> > >
> > > I run "grep Huge /proc/meminfo" in rhel5.4 .
> > > it shows:
> > > HugePages_Total: 0
> > > HugePages_Free: 0
> > > HugePages_Rsvd: 0
> > > Hugepagesize: 2048 kB
> > >
> > > It says hugepagesize is 2M, how can I change the size to 16M?
> > > Any help will be appreciated.
> > >
> > > Easley
> >
> > You can *only* do this by adding "hugepagesz=16M hugepages=32" into
> > you command line
> > to preallocate 32 16M hugepages.
> >
> > Prerequisite is you hardware support 16M huge page.
> >
> > >
> > >
> >
> ------------------------------------------------------------------------------
> > > RSA(R) Conference 2012
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> > >
> > >
> > > _______________________________________________
> > > Libhugetlbfs-devel mailing list
> > > Libhugetlbfs-devel@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/libhugetlbfs-devel
> >
> > --
> > I am a slow learner
> > but I will keep trying to fight for my dreams!
> >
> > --bill
> >
>
> --
> I am a slow learner
> but I will keep trying to fight for my dreams!
>
> --bill
>
--
I am a slow learner
but I will keep trying to fight for my dreams!
--bill
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