Problem about Reporting Service (SSRS) for SharePoint 2010 Integration

Recently i faced fallowing error and decided that write about an article about SSRS with Sharepoint Integration because of MSDN articles is very detailed but sometimes the people can miss the basic points.Lets see what we faced:

The configuration parameter SharePointIntegrated is set to True but Share Point Object Model cannot be loaded.

System.IO.FileNotFoundException: Could not load file or assembly ‘Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c’ or one of its dependencies. The system cannot find the file specified. File name: ‘Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c’ at Microsoft.ReportingServices.SharePoint.Objects.RSSPImpSecurity.set_StaticCatchAccessDeniedException(Boolean value) at Microsoft.ReportingServices.SharePoint.Server.SharePointServiceHelper..ctor() at Microsoft.ReportingServices.SharePoint.Server.SharePointServiceHelperFactory.get_ServiceHelper() WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog]. . (rsSharePointObjectModelNotInstalled) Get Online Help

The cause of the problem is the server which SSRS installed has not  sharepoint installation.SSRS server and the sharepoint technology instance are on separated machines.If you deep in MSDN articles you can find fallowing informations :

“You plan to immediately install the Reporting Services Add-in and configure report server integration settings on the SharePoint site. If the report server provides report processing capability to a SharePoint farm, you must also install a SharePoint Web front end on the report server computer so that you can join it to the farm”
http://technet.microsoft.com/en-us/library/cc281311.aspx
“For deployments that include a SharePoint server farm, install a SharePoint Web front-end on the report server computer. The Web front-end joins the report server computer to a SharePoint farm. Installing the Web front-end on the report server computer is only necessary if you deploy the report server and the SharePoint technology instance on separate computers.”
Configuring Reporting Services for SharePoint 2010 Integration http://technet.microsoft.com/en-us/library/bb326356.aspx

Conculution:
So the SSRS server must be a member of the sharepoint farm. In order to join the farm, the farm must aware of the SSRS server. So we need to install the sharepoint web front-end on the SSRS server to make it able to communicate with other machines.

Please check for more info:
Requirements for Running Reporting Services in SharePoint Integrated Mode
http://technet.microsoft.com/en-us/library/bb283190.aspx