1. 1
My Raspberry Pi
2013/MAY/27
たけおか@AXE
twitter: @takeoka
www.takeoka.org/~take/

2. 2
AXE's Basic Software
雷神(Raideen):Cluster Linux
axLinux:Embedded
HDD recorder , Digital TV
Network Equipmen
Mobile Devices
Robot (AICS)
Japan Air Self-Defense Force
Enhanced scheduler
Embedded BSD
Original Realtime OS
絹(Kinu), XTAL

3. 3
AXE Supports Japanese CPU
FujitsuFujitsu FR/VFR/V Renesas ElectronicsRenesas Electronics
SH-Mobile,SH2ASH-Mobile,SH2A
ToshibaToshiba MePMeP
ToshiaToshia CELLCELL
EpsonEpson C33/C17C33/C17
SharpSharp LH795xxLH795xx
Sanyo LC690132Sanyo LC690132
Renesas ElectronicsRenesas Electronics
V850V850

4. 4
Takeoka's activity on NPO
 Japan Embedded Systems Technology Association(JASA.or.jp)
– Techincal Division Vice President, Steering Board member
 OSS Consortium (osscons.jp)
– Vice Chairman , Steering Board member
 PC Cluster Consortium (pccluster.org)
– Steering Board member
 the OpenGroup (opengroup.org)
– RT&ES member

5. 5
axLinux Cluster for hadoop
ATOM ×16CPU(32 Cores)
 Each node run with Diskless Linux
– OS startup by Diskless boot
 Easy Administration
– Scales up to hundreds Mega CPUs
– NIS, DHCP, NFS
 Hadoop supported
– Each node has local fast HDD
 MPI supported
 OpenMP supported

6. 6
My Raspberry Pi
3 Nodes Cluster Machine :-)
6 Cores
High Reliable
24 hours × a few months
Low power consumption
Low heat generation

7. 7
Raspberry Pi Cluster
3 Nodes Cluster Machine
6 Cores
Single core performance; ARM11@700MHz
Dhrystones per Second:
1503759.4
Comparable to Pentium III P3 733
Whetstones (C Converted Double Precision) :
625.0 MIPS
Reasonable , but I hope NEON (SIMD)
MPI in C
Computing user never uses Python :-)
mpich2-1.4.1p1
Master storage is shared by NFS
Convenient for MPI

8. 8
Raspberry PI Cluster
3 Nodes Cluster Machine
Invoke MPI from Master Node
Master storage is shared by NFS
Convenient for MPI
ARM
Core
ARM
Core
Local
Storage
16GB
USB Mem.
ARM
Core
ARM
Core
Master
Storage
16GB
USB Mem.
Master Node
ARM
Core
ARM
Core
Local
Storage
16GB
USB Mem.
NFS

9. 9
Raspberry PI is Gateway to my Home

Very difficult to reach internal server from Internet

Multi NAT environment

I can not configure the common (shared) NAT router

VPN connection Raspi and Internet Server resolves

Raspi: 192.168.xx.xx ← ppp over ssh → www.takeoka.org: 192.168.yy.yy

Set static Routing on my NotePC

route add 192.168.xx..xx netmask 255.255.255.0 gw www.takeoka.org

※address information is not real
ARM
Core
ARM
Core
Master
Storage
16GB
USB Mem.
Master Node
NAT
router
InternetNAT
router
apartment house, Kanda, Tokyo
192.168.xx.xx LAN
VPN (PPP over ssh)
Ordinary routing
My Note PC (Ubuntu)
at everywhere
www.takeoka.org
Internet Server
- Fixed IP address
(at Kyoto)

10. 10
Raspberry PI is File Server at Home

No file is left at home

All file can be accessed from anywhere

Samba (SMB)? I don't use Windows usually

Need not Cloud :-)
ARM
Core
ARM
Core
Master
Storage
16GB
USB Mem.
Master Node
NAT
router
InternetNAT
router
apartment house, Kanda, Tokyo
192.168.xx.xx LAN
VPN (PPP over ssh)
Raspi
Cluster Nodes
Raspi
Desktop machine
NFS
My Note PC (Ubuntu)
at everywhere
www.takeoka.org
Internet Server
- Fixed IP address
(at Kyoto)

11. 11
Expectation or Hope

More Low power consumption

Big number of Raspberry Pi runs

Normally Off Computing architecture

My file server is not used only about 18 hours / 1day

I expect MRAM

Magnetic Memory, LSI scale

Enables Completely power off

Toshiba is developing MRAM for replacing main memory (DRAM)