1. University of Technology
Computer engineering and information technology Department
software platform
Multi computer-sending message:
-PVM “parallel virtual Machine”,” MPI Message passing system”
- Open MOSIX, single system image.
Multiprocessor- sharing memory:
-OpenMP, Open specification for multiprocessing.
- Unix process and thread, library PThread.
Distributed share memory:
-”patch” for OpenMOSIX.
Grid computing :
- Globus Toolkit.
Note : some technique use in software is very important for us:
Check point and restart.

2. University of Technology
Computer engineering and information technology Department
Grid computing
Infrastructures enable to integrating and mutual (collaborate ) use resources such as “executing computer, network, data base , tools, services, etc…”, also organize sharing and space filed.
Pervasive computing infrastructure that supports large-scale and resource-intensive applications.
Go about new variety in distributed computing by dynamically sharing alternating resources.
An important concept in grids is the virtual organization, which offers a unified view of resources.
Integration big homogenous systems.

3. Grid-Architecture components
University of Technology
Computer engineering and information technology Department
Grid-Architecture components
Grid is distributed system consist of :
Computers:
a- Server: support service.
b- application: mutual cooperation.
Network:
a- WAN.
b- transport service: fast transfer data between application.
c- Switching, Routing, Protocols, Security.
Storage data:
a- Disk connect to network to store big quantity data. 3

4. Grid-Architecture Application Application Collective
University of Technology
Computer engineering and information technology Department
Grid-Architecture
Application
Application
Collective
Grid Protocol Architecture
Resources
Internet protocol architecture
Transport
Connectivity
Network
Fabric
Link

5. Collective- planning, diagnostic, allocate.
University of Technology
Computer engineering and information technology Department
Grid- Architecture
Application.
Collective- planning, diagnostic, allocate.
Resources – Safety share resources.
Information protocols, data about structure and state.
Manage protocols- decide sharing.
Connectivity- provide secure communication and authentication service, depend on TCP/IP.
Fabric:
Need it to access to local network resources.
Include: execute computer, data disk, code, space field.

6. Grid-Usage Connection sharing performance computer.
University of Technology
Computer engineering and information technology Department
Grid-Usage
Connection sharing performance computer.
Using is restriction: “grid” is specify to concert area doesn’t extend for all general computing .
Not only for heavy computing force (use for most area of distributed computed )

7. Classification “Grid”
University of Technology
Computer engineering and information technology Department
Classification “Grid”
Standard:
generate on base (public domain ).
Sharing program and data.
Interactive:
Provide high availability, limiting local user resources.
Visual, virtual reality.
High power computing(HPC):
Distributed numeric compute.
Demanding compute over large volume of data.
Demanding for big network capacity and synchronization.

8. Standard grid implementing
University of Technology
Computer engineering and information technology Department
Standard grid implementing
OGSA- Open Grid Services Architecture.
OGSI- Open Grid Services Infrastructure” to provide an infrastructure layer for the Open Grid Services Architecture (OGSA). ”:
Basic element for grid is: OGSA.
Require specification to generate, control and exchange information between grid servers.
Grid services are web services, full same request and duties to communicate between client and grid.
Grid service support safety toward fault.

9. University of Technology
Computer engineering and information technology Department
Globus Toolkit
Globus resources Allocation manager; Perform request for resources, by local instruction (generate process, control and serve it ).
Grid security Infrastructure; authenticate right access, constricting pass global to local user.
Monitoring and discovery; information service, consist of LDAP(Light-weight Discovery Access Protocol), serve to indicate stat net, servers and data base.
Globus access to Second Storage; enable access sharing application to local data.
Nexus,globus_io; communication in heterogeneous space.

10. The Open Grid Services Architecture (OGSA) describes an architecture for a service-oriented grid computing environment for business and scientific use.
developed within the Global Grid Forum (GGF).
OGSA is based on several other Web service technologies, OGSA is a distributed interaction and computing architecture based around services, assuring interoperability on heterogeneous systems so that different types of resources can communicate and share information.
The Open Grid Services Infrastructure (OGSI) was published by the Global Grid Forum (GGF), It was intended to provide an infrastructure layer for the Open Grid Services Architecture (OGSA).