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Exploring the Use of a Reliable IP Multicast to Distribute BaBar's Online Event Processing and Filter Software to a Large Number of Farm Machines.

DE2004826446

Publication Date	2002
Personal Author	Ishihara, T.
Page Count	20
Abstract	Currently, the problem at hand is in distributing identical copies of OEP and filter software to a large number of farm nodes. One of the common methods used to transfer these softwares is through unicast. Unicast protocol faces the problem of repetitiously sending the same data over the network. Since the sending rate is limited, this process poses to be a bottleneck. Therefore, one possible solution to this problem lies in creating a reliable multicast protocol. A specific type of multicast protocol is the Bulk Multicast Protocol. This system consists of one sender distributing data to many receivers. The sender delivers data at a given rate of data packets. In response to that, the receiver replies to the sender with a status packet which contains information about the packet loss in terms of Negative Acknowledgment. The probability of the status packet sent back to the sender is +, where N is the number of receivers. The protocol is designed to have approximately 1 status packet for each data packet sent.
Keywords	BaBar detectors Particle accelerators B mesons Data processing Radiation detectors CP invariance Probability Accelerator facilities Nuclear instruments Decay Computer codes Data transmission
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Stanford Linear Accelerator Center, CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200510

Exploring the Use of a Reliable IP Multicast to Distribute BaBar's Online Event Processing and Filter Software to a Large Number of Farm Machines.

Exploring the Use of a Reliable IP Multicast to Distribute BaBar's Online Event Processing and Filter Software to a Large Number of Farm Machines.
DE2004826446

Publication Date	2002
Personal Author	Ishihara, T.
Page Count	20
Abstract	Currently, the problem at hand is in distributing identical copies of OEP and filter software to a large number of farm nodes. One of the common methods used to transfer these softwares is through unicast. Unicast protocol faces the problem of repetitiously sending the same data over the network. Since the sending rate is limited, this process poses to be a bottleneck. Therefore, one possible solution to this problem lies in creating a reliable multicast protocol. A specific type of multicast protocol is the Bulk Multicast Protocol. This system consists of one sender distributing data to many receivers. The sender delivers data at a given rate of data packets. In response to that, the receiver replies to the sender with a status packet which contains information about the packet loss in terms of Negative Acknowledgment. The probability of the status packet sent back to the sender is +, where N is the number of receivers. The protocol is designed to have approximately 1 status packet for each data packet sent.
Keywords	BaBar detectors Particle accelerators B mesons Data processing Radiation detectors CP invariance Probability Accelerator facilities Nuclear instruments Decay Computer codes Data transmission
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Stanford Linear Accelerator Center, CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200510