= Xen GPU cluster =

== Hardware ==
||Machine|| Dell !OptiPlex 755
||Node|| 9 nodes
||CPU|| Intel(R) Core(TM)2 Quad CPU    Q6600  @ 2.40GHz
||Memory|| 6GB/node
||Storage|| 160GB/node
||Video Card|| NVIDIA !GeForce 9800GT 1GB/node

== Software ==
||OS!#1|| Ubuntu 8.10 with Kernel: 2.6.27-11-server x86_64 (non-patched kernel)
||OS!#2|| Ubuntu 8.10 with Kernel: 2.6.22-9 x86_64 (Xen-3.3.1+Lustre patched kernel)
[[BR]]

= Part 1 Build essential environment =

== 1.1 - Basic Environment ==
# NVIDIA CUDA driver # [[BR]]
rock@cloud:~/nvidia/cuda$ wget http://developer.download.nvidia.com/compute/cuda/2_1/drivers/NVIDIA-Linux-x86_64-180.22-pkg2.run [[BR]]
# NVIDIA CUDA toolkit # [[BR]]
rock@cloud:~/nvidia/cuda$ wget http://developer.download.nvidia.com/compute/cuda/2_1/toolkit/cudatoolkit_2.1_linux64_ubuntu8.04.run [[BR]]
# NVIDIA CUDA SDK # [[BR]]
rock@cloud:~/nvidia/cuda$ wget http://developer.download.nvidia.com/compute/cuda/2_1/SDK/cuda-sdk-linux-2.10.1215.2015-3233425.run [[BR]]
rock@cloud:~$ sudo apt-get install autoconf automake build-essential gcc make libtool initramfs-tools libxi6 libxi-dev libxmu6 libxmu-dev linux-kernel-devel linux-headers-2.6.27-11-server xserver-xorg-core xserver-xorg-dev [[BR]]
rock@cloud:~$ sudo ln -sf /usr/src/linux-2.6.22 /usr/src/linux [[BR]]
rock@cloud:~/nvidia/cuda$ sudo sh NVIDIA-Linux-x86_64-180.22-pkg2.run [[BR]]
rock@cloud:~/nvidia/cuda$ sudo sh cudatoolkit_2.1_linux64_ubuntu8.04.run [[BR]]
{{{
Enter install path (default /usr/local/cuda, '/cuda' will be appended): /usr/local/cuda
}}}

# Note:
{{{
* Please make sure your PATH includes /usr/local/cuda/bin
* Please make sure your LD_LIBRARY_PATH includes /usr/local/cuda/lib
*   or add /usr/local/cuda/lib to /etc/ld.so.conf and run ldconfig as root

* Please read the release notes in /usr/local/cuda/doc/

* To uninstall CUDA, delete /usr/local/cuda
* Installation Complete
}}}

rock@cloud:~/nvidia/cuda$ sudo sh cuda-sdk-linux-2.10.1215.2015-3233425.run [[BR]]

# Note:
{{{
{{{
Enter install path (default /usr/local/cuda, '/cuda' will be appended): /usr/local/NVIDIA_CUDA_SDK
}}}

}}}
{{{
Configuring SDK Makefile (/usr/local/NVIDIA_CUDA_SDK/common/common.mk)...

* Please make sure your PATH includes /usr/local/cuda/bin
* Please make sure your LD_LIBRARY_PATH includes /usr/local/cuda/lib

* To uninstall the NVIDIA CUDA SDK, please delete /usr/local/NVIDIA_CUDA_SDK
}}}

rock@cloud:~$ sudo vim /etc/profile [[BR]]
{{{
Add:
export PATH=$PATH:/usr/local/cuda/bin
}}}
rock@cloud:~$ source /etc/profile [[BR]]
rock@cloud:~$ sudo vim /etc/ld.so.conf [[BR]]
{{{
Add:
/usr/local/cuda/lib
}}}
rock@cloud:~$ sudo ldconfig [[BR]]

== 1.2 NVIDIA Driver !HowTo !OnNoneXenKernel ==
# Rock said that the unknown identification of the VGA device might be the "pciids" problem. [[BR]]
Sol1: [[BR]]
rock@cloud:~$ sudo update-pciids <older version> [[BR]]
Sol2: [[BR]]
rock@cloud:~$ wget http://pciids.sourceforge.net/v2.2/pci.ids <latest version> [[BR]]
rock@cloud:~$ sudo cp pci.ids /usr/share/misc/ [[BR]]
rock@cloud:~$ sudo lspci -v -v [[BR]]

{{{
01:00.0 VGA compatible controller: nVidia Corporation GeForce 9800 GT (rev a2)
	Subsystem: ASUSTeK Computer Inc. Device 82a0
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 16
	Region 0: Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
	Region 1: Memory at d0000000 (64-bit, prefetchable) [size=256M]
	Region 3: Memory at fa000000 (64-bit, non-prefetchable) [size=32M]
	Region 5: I/O ports at dc80 [size=128]
	[virtual] Expansion ROM at fea00000 [disabled] [size=128K]
	Capabilities: [60] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [68] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
		Address: 0000000000000000  Data: 0000
	Capabilities: [78] Express (v1) Endpoint, MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <4us
			ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
		DevCtl:	Report errors: Correctable- Non-Fatal+ Fatal+ Unsupported-
			RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+
			MaxPayload 128 bytes, MaxReadReq 512 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x16, ASPM L0s L1, Latency L0 <512ns, L1 <1us
			ClockPM- Suprise- LLActRep- BwNot-
		LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
	Capabilities: [100] Virtual Channel <?>
	Capabilities: [128] Power Budgeting <?>
	Capabilities: [600] Vendor Specific Information <?>
	Kernel driver in use: nvidia
	Kernel modules: nvidia, nvidiafb
}}}

rock@cloud:~$ less /var/log/Xorg.0.log | grep nVidia [[BR]]
{{{
(--) PCI:*(0@1:0:0) nVidia Corporation GeForce 9800 GT rev 162, Mem @ 0xfd000000/16777216, 0xd0000000/268435456, 0xfa000000/33554432, I/O @ 0x0000dc80/128, BIOS @ 0x????????/131072
}}}

rock@cloud:~$ less /usr/share/misc/pci.ids | grep 9800 [[BR]]

{{{
	0601  GeForce 9800 GT 512
	0604  GeForce 9800 GX2
        0605  GeForce 9800 GT
	0612  GeForce 9800 GTX
	0613  GeForce 9800 GTX+
	0614  GeForce 9800 GT
	0617  GeForce 9800M GTX
	10de  GeForce 9800M GTX
}}}
rock@cloud:~$ sudo Xorg -scanpci [[BR]]
{{{
Probing for PCI devices (Bus:Device:Function)

(0:0:0) unknown card (0x1028/0x0211) using a Intel Corporation DRAM Controller
(0:1:0) Intel Corporation PCI Express Root Port
(0:3:0) unknown card (0x1028/0x0211) using a Intel Corporation MEI Controller
(0:3:2) unknown card (0x1028/0x0211) using a Intel Corporation PT IDER Controller
(0:3:3) unknown card (0x1028/0x0211) using a Intel Corporation Serial KT Controller
(0:25:0) unknown card (0x1028/0x0211) using a Intel Corporation 82566DM-2 Gigabit Network Connection
(0:26:0) unknown card (0x1028/0x0211) using a Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4
(0:26:1) unknown card (0x1028/0x0211) using a Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5
(0:26:7) unknown card (0x1028/0x0211) using a Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2
(0:27:0) unknown card (0x1028/0x0211) using a Intel Corporation 82801I (ICH9 Family) HD Audio Controller
(0:28:0) Intel Corporation 82801I (ICH9 Family) PCI Express Port 1
(0:29:0) unknown card (0x1028/0x0211) using a Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1
(0:29:1) unknown card (0x1028/0x0211) using a Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2
(0:29:2) unknown card (0x1028/0x0211) using a Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3
(0:29:7) unknown card (0x1028/0x0211) using a Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1
(0:30:0) Intel Corporation 82801 PCI Bridge
(0:31:0) Intel Corporation LPC Interface Controller
(0:31:2) unknown card (0x1028/0x0211) using a Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 4 port SATA IDE Controller
(0:31:3) unknown card (0x1028/0x0211) using a Intel Corporation 82801I (ICH9 Family) SMBus Controller
(0:31:5) unknown card (0x1028/0x0211) using a Intel Corporation 82801I (ICH9 Family) 2 port SATA IDE Controller

---> (1:0:0) unknown card (0x1043/0x82a0) using an unknown chip (DeviceId 0x0605) from nVidia Corporation
}}}

rock@cloud:~$ sudo /etc/X11/xorg.conf [[BR]]
{{{
# Allocate the BusID for the VGA Device
Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    BusID          "PCI:1:0:0"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 9800 GT"
    Option         "RenderAccel" "True"
    Option         "UseEdidDpi" "False"
EndSection
}}}

rock@cloud:~$ sudo glxinfo -display :0
{{{
#It seems that the 3D accerlation works fine without any trouble.
name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
server glx version string: 1.4
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce 9800 GT/PCI/SSE2
OpenGL version string: 3.0.0 NVIDIA 180.29
OpenGL shading language version string: 1.30 NVIDIA via Cg compiler
}}}

== 1.3 NVIDIA Driver !HowTo !OnXenKernel ==
''In this case,we pick the driver Ver.180.22 x86_64 for Xen_Lustre kernel.''[[BR]]
# Test1- Success [[BR]]
rider@cloud:~/nvidia/driver$ export IGNORE_XEN_PRESENCE=1 [[BR]]
rider@cloud:~/nvidia/driver$ export SYSSRC=/lib/modules/2.6.22.9/source [[BR]]
rider@cloud:~/nvidia/driver$ export SYSOUT=/lib/modules/2.6.22.9/build [[BR]]
rider@cloud:~/nvidia/driver$ sudo IGNORE_XEN_PRESENCE=1 ./NVIDIA-Linux-x86_64-180.22-pkg2.run --x-module-path=/usr/lib/xorg/modules/ --kernel-source-path=/usr/src/linux/ [[BR]]
rider@cloud:~$ sudo modprobe -l | grep nv
{{{
/lib/modules/2.6.22.9/kernel/drivers/video/nvidia.ko
}}}
rider@cloud:~/nvidia/driver$ sudo modprobe nvidia [[BR]]
rider@cloud:~/nvidia/driver$ dmesg [[BR]]
{{{
NVRM: loading NVIDIA UNIX x86_64 Kernel Module  180.22  Tue Jan  6 09:15:58 PST 2009
}}}

# Test2- Testing [[BR]]
rider@cloud:~/nvidia/driver$ export IGNORE_XEN_PRESENCE=1 [[BR]]
rider@cloud:~/nvidia/driver$ export SYSSRC=/lib/modules/2.6.22.9/source [[BR]]
rider@cloud:~/nvidia/driver$ export SYSOUT=/lib/modules/2.6.22.9/build [[BR]]
rider@cloud:~/nvidia/driver$ ./NVIDIA-Linux-x86_64-180.22-pkg2.run --extract-only [[BR]]
rider@cloud:~/nvidia/driver$ cd ./NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv/ [[BR]]
rider@cloud:~/nvidia/driver/NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv$ CC="gcc -DNV_VMAP_4_PRESENT -DNV_SIGNAL_STRUCT_RLIM" make SYSSRC=/lib/modules/2.6.22.9/source SYSOUT=/lib/modules/2.6.22.9/build module [[BR]]
rider@cloud:~/nvidia/driver/NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv$ mkdir -p /lib/modules/2.6.22.9/extra [[BR]]
rider@cloud:~/nvidia/driver/NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv$ sudo cp nvidia.ko /lib/modules/2.6.22.9/extra/ [[BR]]
rider@cloud:~/nvidia/driver/NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv$ sudo depmod -a [[BR]]
rider@cloud:~/nvidia/driver/NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv$ sudo modprobe nvidia [[BR]]
{{{
errMsg: nvidia: Unknown symbol __phys_addr
}}}

PS: Test1 & Test2 Modified File [[BR]]
{{{
#Kernel Source (Test1)
/usr/src/linux/include/asm/smp.h
/usr/src/linux/include/xen/interface/memory.h

#NVIDIA Source (Test2)
NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv/nv.c
NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv/nv-vm.c
NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv/conftest.sh
NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv/Makefile.kbuild
NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv/nv-linux.h
NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv/os-interface.c
NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv/nv-linux.h_old
NVIDIA-Linux-x86_64-180.22-pkg2/usr/src/nv/conftest.sh_old
}}}

== 1.4 NVIDIA GPU !StatusCheck ==
rock@cloud:~$ sudo nvidia-xconfig -query-gpu-info [[BR]]
{{{
# GPU Status check
Number of GPUs: 1

GPU #0:
  Name      : GeForce 9800 GT
  PCI BusID : PCI:1:0:0

  Number of Display Devices: 1

  Display Device 0 (CRT-0):
     EDID Name             : ViewSonic VA721
     Minimum HorizSync     : 30.000 kHz
     Maximum HorizSync     : 82.000 kHz
     Minimum VertRefresh   : 50 Hz
     Maximum VertRefresh   : 85 Hz
     Maximum PixelClock    : 140.000 MHz
     Maximum Width         : 1280 pixels
     Maximum Height        : 1024 pixels
     Preferred Width       : 1280 pixels
     Preferred Height      : 1024 pixels
     Preferred VertRefresh : 60 Hz
     Physical Width        : 340 mm
     Physical Height       : 270 mm
}}}
rock@cloud:~$ sudo nvidia-smi [[BR]]
{{{
Gpus found in probe:
Found Gpuid 0x1000
Attaching all probed Gpus...OK
Getting unit information...OK
Getting all static information..
}}}

= Part 2 Xen PCI Express configuration !HowTo =

== 2.1 Xen_Kernel_config ==
{{{
CONFIG_XEN_PCIDEV_FRONTEND=y
CONFIG_XEN_PCIDEV_BACKEND=y
CONFIG_XEN_PCIDEV_BACKEND_PASS is not set
CONFIG_XEN_PCIDEV_BACKEND_VPCI=y
CONFIG_XEN_PCIDEV_BACKEND_SLOT is not set
}}}
== 2.2 DEV_IDs confirmation ==
rider@cloud:~$ sudo lspci -vvn [[BR]]
{{{
01:00.0 0300: 10de:0605 (rev a2) ---> ---> vendorID + DEV_IDs
	Subsystem: 1043:82a0
	Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin A routed to IRQ 16
	Region 0: Memory at fd000000 (32-bit, non-prefetchable) [disabled] [size=16M]
	Region 1: Memory at d0000000 (64-bit, prefetchable) [disabled] [size=256M]
	Region 3: Memory at fa000000 (64-bit, non-prefetchable) [disabled] [size=32M]
	Region 5: I/O ports at dc80 [disabled] [size=128]
	Expansion ROM at fea00000 [disabled] [size=128K]
	Capabilities: [60] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [68] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
		Address: 0000000000000000  Data: 0000
	Capabilities: [78] Express (v1) Endpoint, MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <4us
			ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
		DevCtl:	Report errors: Correctable- Non-Fatal+ Fatal+ Unsupported-
			RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+
			MaxPayload 128 bytes, MaxReadReq 512 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x16, ASPM L0s L1, Latency L0 <512ns, L1 <1us
			ClockPM- Suprise- LLActRep- BwNot-
		LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
	Kernel driver in use: nvidia
	Kernel modules: nvidia, nvidiafb
}}}

== 2.3 PCI Backend Configuration ==
=== 2.3.1 Binding at Boot ===
# Important: You'll need to unload the NVIDIA driver before setting up the pci-backend. [[BR]] 
rider@cloud:~$ sudo modprobe -r nvidia [[BR]]
rider@cloud:~$ sudo vim /boot/grub/menu.lst [[BR]]
{{{
module  /boot/vmlinuz-2.6.22.9 root=UUID=d3fa560e-7071-46d8-a168-036f40960c7b ro console=tty0 pciback.hide=(0000:01:00.0)
}}}

=== 2.3.2 Late Binding ===
rider@cloud:~$ sudo modprobe -r nvidia [[BR]]
rider@cloud:~$ sudo vim /etc/modprobe.d/blacklist [[BR]]
{{{
# nvidia driver autoload-disabled
blacklist nvidia                                                                                                        
}}}
rider@cloud:~$ sudo su - [[BR]]
# Hide the device from dom0 so pciback can take control. [[BR]]
root@cloud:~$ echo -n "0000:01:00.0" > /sys/bus/pci/drivers/nvidia/unbind [[BR]]

# Give the dev_ids to pciback, and give it a new slot then bind.[[BR]]
root@cloud:~$ echo -n "0000:01:00.0" > /sys/bus/pci/drivers/pciback/new_slot [[BR]]
root@cloud:~$ echo -n "0000:01:00.0" > /sys/bus/pci/drivers/pciback/bind [[BR]]

# You can use an initialization script to invoke the PCIE device at startup. [[BR]]

root@cloud:~$ cat /sys/bus/pci/drivers/pciback/slots [[BR]]
{{{ 
0000:01:00.0
}}}

# Caution: Make sure that the device is not controlled by any driver: there should be no driver symlink for nvidia. [[BR]] 
{{{
PATH: /sys/bus/pci/devices/0000:01:00.0/
driver -> ../../../../bus/pci/drivers/nvidia ---> This symlink shouldn't exist.
}}}

=== 2.3.3 Permissive Flag ===
rider@cloud:~$ sudo vim /etc/xen/xend-pci-permissive.sxp [[BR]]
{{{
(unconstrained_dev_ids
     #('0123:4567:89AB:CDEF')
     ('0000:01:00.0')
)
}}}

=== 2.3.4 User-space Quirks ===
rider@cloud:~$ sudo vim /etc/xen/xend-pci-quirks.sxp [[BR]]
{{{
(pci_ids
   # Entries are formated as follows:  
   #     <vendor>:<device>[:<subvendor>:<subdevice>]

   ('10de:0605'   # NVIDIA 9800GT
   )
)
}}}

=== 2.3.5 PCI Frontend Configuration ===
rider@cloud:~$ sudo vim /etc/xen/vm01.cfg [[BR]]
{{{
# We create a new virtual machine named "vm01",and pci_ids configuration example is as below.
# In this case, we take the "PCI Express" deviceID for example.
pci =['01:00.0']
}}}

{{{
01:00.0 --> PCI Express
00:01.0 --> PCI bridge: Intel Corporation 82Q35 Express PCI Express Root Port
00:1d.0 --> USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller
00:1d.1 --> USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller
00:1d.2 --> USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller
00:1d.7 --> USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller
}}}

rider@cloud:/etc/xen$ sudo xm create vm01.cfg[[BR]]
rider@cloud:/etc/xen$ dmesg | grep pciback [[BR]]
{{{
pciback 0000:01:00.0: seizing device
pciback: vpci: 0000:01:00.0: assign to virtual slot 0
}}}

rider@cloud:~$ sudo xm console vm01 [[BR]]
vm01:~# dmesg | grep pci [[BR]]
{{{
pcifront pci-0: Installing PCI frontend
pcifront pci-0: Creating PCI Frontend Bus 0000:00
}}}

= Part 3 Running CUDA on Xen !HowTo =

== 3.1 Create a virtual machine for CUDA ==

rider@cloud:~$ sudo vim /etc/xen-tools/xen-tools.conf [[BR]]
{{{
dir = /home
install-method = debootstrap
size   = 6Gb      # Disk image size.
memory = 256Mb    # Memory size
swap   = 128Mb    # Swap size
fs     = ext3     # use the EXT3 filesystem for the disk image.
dist   = hardy    # Default distribution to install. ---> For CUDA Support (Ubuntu 8.0.4)
image  = sparse   # Specify sparse vs. full disk images.
gateway   = 140.XXX.XXX.XXX
netmask   = 255.255.255.0
broadcast = 140.XXX.XXX.XXX
kernel      = /boot/vmlinuz-`uname -r`
initrd      = /boot/initrd.img-`uname -r`
mirror = http://gb.archive.ubuntu.com/ubuntu/
ext3_options   = noatime,nodiratime,errors=remount-ro
ext2_options   = noatime,nodiratime,errors=remount-ro
xfs_options    = defaults
reiser_options = defaults
}}}
rider@cloud:~$ sudo xen-create-image --hostname cuda --ip 140.XXX.XXX.XXX [[BR]]

== 3.2 Running CUDA Example on !VirtualMachine ==

Step1: [[BR]]
# !VirtualMachine startup [[BR]]
rider@cloud:~$ sudo xm create cuda.cfg [[BR]]

Step2: [[BR]]
# Remote login [[BR]]
rider@350Z:~$ ssh 140.xxx.xxx.xxx [[BR]]
# Local login [[BR]]
rider@cloud:~$ sudo xm console cuda [[BR]]

Step3: [[BR]]
# NVIDIA CUDA toolkit & sdk installation. Reference: Chapter1: 1.1 - Basic Environment [[BR]]

Step4: [[BR]]
# Build your own cuda project or cuda example running test. Reference: Chapter3: 3.3 - Running CUDA Example on Xen [[BR]]

# Example:Device Bandwidth [[BR]]
rider@cuda:/usr/local/NVIDIA_CUDA_SDK/bin/linux/release$ sudo ./bandwidthTest  [[BR]]

{{{
(Running on Xen_VirtualMachine)
Device 0: "GeForce 9800 GT"
Quick Mode
Host to Device Bandwidth for Pageable memory
.
Transfer Size (Bytes)	Bandwidth(MB/s)
 33554432		31999998.0

Quick Mode
Device to Host Bandwidth for Pageable memory
.
Transfer Size (Bytes)	Bandwidth(MB/s)
 33554432		320000000.0

Quick Mode
Device to Device Bandwidth
.
Transfer Size (Bytes)	Bandwidth(MB/s)
 33554432		640000000.0

&&&& Test PASSED
}}}


# Example:Device Query [[BR]]
rider@cuda:/usr/local/NVIDIA_CUDA_SDK/bin/linux/release$ sudo ./deviceQuery [[BR]]

{{{
(Running on Xen_VirtualMachine)
Device 0: "GeForce 9800 GT"
  Major revision number:                         0
  Minor revision number:                         0
  Total amount of global memory:                 6385920 bytes
  Number of multiprocessors:                     11007
  Number of cores:                               88056
  Total amount of constant memory:               6385872 bytes
  Total amount of shared memory per block:       3236702400 bytes
  Total number of registers available per block: 6385904
  Warp size:                                     0
  Maximum number of threads per block:           0
  Maximum sizes of each dimension of a block:    0 x 6385808 x 0
  Maximum sizes of each dimension of a grid:     0 x 0 x 2
  Maximum memory pitch:                          3234490924 bytes
  Texture alignment:                             3236702608 bytes
  Clock rate:                                    0.00 GHz
  Concurrent copy and execution:                 Yes
}}}

== 3.3 Running CUDA Example on Xen ==

'''Important:'''[[BR]]
In this case, We have to use "gcc-4.1" & "g++-4.1" instead of "gcc-4.3" to avoid getting stdio error.[[BR]]
{{{
/usr/include/bits/stdio2.h(...): error: identifier "__builtin_va_arg_pack" is undefined
}}}

Example !HowTo : [[BR]]
rider@cloud:~/opt/NVIDIA_CUDA_SDK$ sudo make [[BR]]
rider@cloud:~/opt/NVIDIA_CUDA_SDK$ cd ./bin/linux/release/ [[BR]]
rider@cloud:~/opt/NVIDIA_CUDA_SDK/bin/linux/release$ ./bandwidthTest [[BR]]
rider@cloud:~/opt/NVIDIA_CUDA_SDK/bin/linux/release$ ./deviceQuery [[BR]]

### Demo Example ###
{{{
(Running on Xen + Lustre Kernel)
Running on......
      device 0:GeForce 9800 GT
Quick Mode
Host to Device Bandwidth for Pageable memory
.
Transfer Size (Bytes)	Bandwidth(MB/s)
 33554432		1574.6

Quick Mode
Device to Host Bandwidth for Pageable memory
.
Transfer Size (Bytes)	Bandwidth(MB/s)
 33554432		1187.9

Quick Mode
Device to Device Bandwidth
.
Transfer Size (Bytes)	Bandwidth(MB/s)
 33554432		41442.7

&&&& Test PASSED

Press ENTER to exit...
}}}
{{{
(Running on Xen + Lustre Kernel)
There is 1 device supporting CUDA

Device 0: "GeForce 9800 GT"
  Major revision number:                         1
  Minor revision number:                         1
  Total amount of global memory:                 1073414144 bytes
  Number of multiprocessors:                     14
  Number of cores:                               112
  Total amount of constant memory:               65536 bytes
  Total amount of shared memory per block:       16384 bytes
  Total number of registers available per block: 8192
  Warp size:                                     32
  Maximum number of threads per block:           512
  Maximum sizes of each dimension of a block:    512 x 512 x 64
  Maximum sizes of each dimension of a grid:     65535 x 65535 x 1
  Maximum memory pitch:                          262144 bytes
  Texture alignment:                             256 bytes
  Clock rate:                                    1.51 GHz
  Concurrent copy and execution:                 Yes
}}}

= Part 4 Running 3D-Applications on Xen !HowTo by using different Graphics Libraries =

== 4.1 Using OpenGL on Dom1 ==

=== 4.1.1 Build VNC Server for DomU-OpenGL===

rider@nvidia:~$ sudo apt-get install gdm sun-java6-jdk xdebconfigurator xfonts-100dpi xfonts-75dpi xfonts-base [[BR]]
rider@nvidia:~$ sudo vim /etc/gdm/gdm.conf [[BR]]
{{{
DisallowTCP=false
}}}
{{{
# VNC Server
[server-VNC]
name=VNC server
command=/opt/TurboVNC/bin/vncserver -geometry 800x600 -depth 24
flexible=true
}}}

== 4.2 Using VMGL on Dom2 ==

=== 4.2.1 Build VNC Server DomU-VMGL ===

rider@vmgl:~$ sudo apt-get install gdm sun-java6-jdk xdebconfigurator xfonts-100dpi xfonts-75dpi xfonts-base [[BR]]
rider@vmgl:~$ sudo vim /etc/gdm/gdm.conf
{{{
DisallowTCP=false
}}}
{{{
# VNC Server
[server-VNC]
name=VNC server
command=/usr/bin/Xvnc -geometry 800x600 -depth 24
flexible=true
}}}

== 4.3 Suspending & Resuming between DomU ==


Reference: [[BR]]
1.NVIDIA CUDA: http://www.nvidia.com/object/cuda_home.html [[BR]]
2.openSUSE NVIDIA + Xen: http://en.opensuse.org/Use_Nvidia_driver_with_Xen [[BR]]
3.NVIDIA GPUs DEV_IDs: http://www.laptopvideo2go.com/forum/index.php?showtopic=7664 [[BR]]
4.pci_ids db: http://www.pcidatabase.com/ [[BR]]
5.Xen: assigning PCI devices to a domain: http://www.bestgrid.org/index.php/Xen:_assigning_PCI_devices_to_a_domain [[BR]]
6.Xen PCI Passthrough: http://www.wlug.org.nz/XenPciPassthrough [[BR]]
7.Xen Users' Manual v3.0: http://www.cl.cam.ac.uk/research/srg/netos/xen/readmes/user/ [[BR]]
8.VT-d in Xen: http://wiki.xensource.com/xenwiki/VTdHowTo [[BR]]