Switchless event building farm for the belle data acquisitionsystem |
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Authors: | Nakao M Itoh R Suzuki SY Yamauchi M Won E Kim HJ Roh S-H Kim H-W Kim H-O Yanaka S |
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Affiliation: | High Energy Accelerator Res. Organ., Tsukuba; |
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Abstract: | We designed a switchless event building farm for the Belle experiment at the KEKB e+e- collider, as a replacement of the existing event builder and the online farm systems. In the new system, PCs are directly interconnected with multiple point-to-point Fast and Gigabit Ethernet connections. The PCs build the detector data in two steps to perform distributed event processing. We set up a test system and confirmed the event building performance meets our new requirements using a realistic prototype software. The system is being installed as scheduled using the summer shutdown time in 2001 |
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