search for: pv

Dear All, I have created a virtual high performance computing (HPC) cluster of 6 compute nodes with MPICH2 using Xen-based Fedora 11 Linux 64-bit paravirtualized (PV) domU guests. Dom0 is Fedora 11 Linux 64-bit. My Intel Desktop Board DQ45CB has a single onboard Gigabit LAN network adapter. I am able to bring up the ring of mpd on the set of 6 compute nodes. However, I am consistently encountering the "(mpiexec 392): no msg recvd from mpd when expecting a...

Dear All, I have created a virtual high performance computing (HPC) cluster of 6 compute nodes with MPICH2 using Xen-based Fedora 11 Linux 64-bit paravirtualized (PV) domU guests. Dom0 is Fedora 11 Linux 64-bit. My Intel Desktop Board DQ45CB has a single onboard Gigabit LAN network adapter. I am able to bring up the ring of mpd on the set of 6 compute nodes. However, I am consistently encountering the "(mpiexec 392): no msg recvd from mpd when expecting a...

...l <ian.campbell@citrix.com> # Date 1337273492 -3600 # Node ID cdb947baea102aa6a1d53472f8a3e5f2d6cc485e # Parent ac45608496cd85b0bf1aed6e5b869b4a86ca672f libxl: do not overwrite user supplied config when running bootloader. Currently when running the bootloader libxl will update b_info->u.pv.kernel, .ramdisk, .cmdline and .bootloader. This can expose internal details, such as temporary paths in /var/run/xen/bootloader.*/ to the user. This is problematic because it means that the user cannot re-use the struct as is. This does not effect xl in Xen 4.2+ since it always reparses the gues...

There are 4 picture galleries with a total of 176 png image screenshots. Picture Tutorial 1 of 4: Installing OpenSUSE 11.2 x86_64 Linux as a PV DomU (Xen 3.5-unstable Pv-Ops Dom0 Kernel 2.6.31.5)Link: http://enmingteo.wordpress.com/2009/11/13/picture-tutorial-1-of-4-installing-opensuse-11-2-x86_64-linux-as-a-pv-domu-xen-3-5-unstable-pv-ops-dom0-kernel-2-6-31-5/ *Picture Tutorial 2 of 4: Installing OpenSUSE 11.2 x86_64 Linux as a PV DomU (...

This patch adds para-virtualization support to the queue spinlock in the same way as was done in the PV ticket lock code. In essence, the lock waiters will spin for a specified number of times (QSPIN_THRESHOLD = 2^14) and then halted itself. The queue head waiter will spins 2*QSPIN_THRESHOLD times before halting itself. When it has spinned QSPIN_THRESHOLD times, the queue head will assume that the lo...

This patch adds the necessary KVM specific code to allow KVM to support the CPU halting and kicking operations needed by the queue spinlock PV code. Two KVM guests of 20 CPU cores (2 nodes) were created for performance testing in one of the following three configurations: 1) Only 1 VM is active 2) Both VMs are active and they share the same 20 physical CPUs (200% overcommit) 3) Both VMs are active and they shares 30 physical CPUs (...

hallo everybody, i googled a lot of time, looking for PV-drivers for Windows- domUs. I found a few things about that, but nothing about download an installation. Do anybody know, where I can get it and how to install? My configuration: Dom0: CentOS 5.1 DomUs: Windows XP and 2003 Server Thanks for any help, Guenter ______________________________...

After upgrading from xen 3.2.x to xen 3.3.0 I get an error message when using pci passthrough with pv guests (my system is not vt-d enabled): xm create -c /etc/xen/domU/myguest Using config file "/etc/xen/domU/myguest". Error: pci: 0000:0e:05.0 must be co-assigned to the same guest with 0000:0f:0a.0 Sharing diffrent pci devices behind a pci bridge used to work in older xen versions for...

Hey Roger, I am seeing this weird behavior when using #linux-next + stable/for-jens-3.8 tree. Basically I can do ''pvscan'' on xvd* disk and quite often I get checksum errors: # pvscan /dev/xvdf PV /dev/xvdf2 VG VolGroup00 lvm2 [18.88 GiB / 0 free] PV /dev/dm-14 VG vg_x86_64-pvhvm lvm2 [4.00 GiB / 68.00 MiB free] PV /dev/dm-12 VG vg_i386-pvhvm lvm2 [4.00 GiB / 68.00 MiB free]...

...uot; the old LVM array into the fresh CentOS install. We have 1 volume group (LVM1) that contains 3 whole hard drives. I had the time to save some informations before the system hard drive crashed definitely: I have vgcfgrestore info, i have volgroups_001.conf, i have the full /etc directory and pvdata. Here is a part of the info i have: PVDATA: ======= --- Physical volume --- PV Name /dev/sda VG Name volgroup_001 PV Size 298.09 GB [625142448 secs] / NOT usable 32.19 MB [LVM: 165 KB] PV# 1 PV Status available Allocata...

Hi, I am trying to setup Xen to use "PV on HVM". For this, I did the following. (1) I followed the tutorial at http://wiki.xensource.com/xenwiki/Fedora13Xen4Tutorial to setup Xen4.0.1 on Fedora13. I am able to run virt-manager and create a Fedora 13 guest. (2) I followed the tutorial at http://bderzhavets.wordpress.com/2010/05/27/p...

Hi How can I build out PV driver with PV Dom0 for hvm? I remember it can work with older dom0(2.6.18), but with PV dom0 now, it fails. best regards yang _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

.... The Wikipedia article to secant method and IRR: http://en.wikipedia.org/wiki/Internal_rate_of_return#Numerical_solution Thanks! ANXIRR <- function (cashFlow, cfDate, guess){ cfDate<-as.Date(cfDate,format="%m/%d/%Y") irrprev <- c(0); irr<- guess pvPrev<- sum(cashFlow) pv<- sum(cashFlow/((1+irr)^(as.numeric(difftime(cfDate,"2010-08-24",units="days"))/360))) print(pv) print("Hi") while (abs(pv) >= 0.001) { t<-irrprev; irrprev<- irr; irr<-irr-((irr-t)*pv/(p...

On 10/24/2014 04:47 AM, Peter Zijlstra wrote: > On Thu, Oct 16, 2014 at 02:10:38PM -0400, Waiman Long wrote: >> +static inline void pv_init_node(struct mcs_spinlock *node) >> +{ >> + struct pv_qnode *pn = (struct pv_qnode *)node; >> + >> + BUILD_BUG_ON(sizeof(struct pv_qnode)> 5*sizeof(struct mcs_spinlock)); >> + >> + if (!pv_enabled()) >> + return; >> + >> + pn->cpusta...

On 10/24/2014 04:47 AM, Peter Zijlstra wrote: > On Thu, Oct 16, 2014 at 02:10:38PM -0400, Waiman Long wrote: >> +static inline void pv_init_node(struct mcs_spinlock *node) >> +{ >> + struct pv_qnode *pn = (struct pv_qnode *)node; >> + >> + BUILD_BUG_ON(sizeof(struct pv_qnode)> 5*sizeof(struct mcs_spinlock)); >> + >> + if (!pv_enabled()) >> + return; >> + >> + pn->cpusta...

Hi, All I have to do some job with PV-driver, who could give me some advice, thank you very much! 2010-10-19 xudongxen _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

Thanks for the reply. If we want to have PV kernel for CentOs 7 , are there any guidelines to follow? How we can know before hand itself that this kernel is PV or HVM, without installing kernel? On Wed, Aug 19, 2015 at 11:27 AM, John R Pierce <pierce at hogranch.com> wrote: > On 8/18/2015 10:37 PM, Venkateswara Rao Dokku wrote: &g...

HI, Is the CentOS 7 PV kernel available? I installed latest CentOS 7 & I found out that it is a HVM guest. So, if we wanted to have CentOS PV guest for CentOS 7, is there any specific steps to follow? or the same kernel will work as both PV & HVM? -- Thanks & Regards, Venkateswara Rao Dokku.

On Mon, Mar 17, 2014 at 01:44:34PM -0400, Waiman Long wrote: > The PV ticketlock code was designed to handle lock holder preemption by > redirecting CPU resources in a preempted guest to another guest that can > better use it and then return the preempted CPU back sooner. But that's the PV code, not the unfair bit. And your fuller PV thing doesn't need...

On Mon, Mar 17, 2014 at 01:44:34PM -0400, Waiman Long wrote: > The PV ticketlock code was designed to handle lock holder preemption by > redirecting CPU resources in a preempted guest to another guest that can > better use it and then return the preempted CPU back sooner. But that's the PV code, not the unfair bit. And your fuller PV thing doesn't need...