Look i have found that:
http://www.realworldtech.com/page.cfm?ArticleID=RWT021005084318&p=4
"The estimate given by IBM at ISSCC 2005 was that the DP FP computation in the SPE has an approximate 10:1 disadvantage in terms of throughput compared to SP FP computation. Given this estimate, the peak DP FP throughput of an 8 SPE CELL processor is approximately 25~30 GFlops when the DP FP capability of the PPE is also taken into consideration. In comparison, Earth Simulator, the machine that previously held the honor as the world’s fastest supercomputer, uses a variant of NEC’s SX-5 CPU (0.15um, 500 MHz) and achieves a rating of 8 GFlops per CPU. Clearly, the CELL processor contains enough compute power to present itself as a serious competitor not only in the multimedia-entertainment industry, but also in the scientific community that covets DP FP performance."
http://www.realworldtech.com/page.cfm?ArticleID=RWT021005084318&p=8
"After some discussion (and more wine), it was determined that the ATO unit is most likely the Atomic (memory) unit responsible for coherency observation/interaction with dataflow on the EIB. Then, after the injection of more liquid refreshments (CH3CH2OH), it was theorized that the RTB most likely stood for some sort of Register Translation Block whose precise functionality was unknown to those outside of the SPE. However, this theory would turn out to be incorrect.
Finally, after sufficient numbers of hydrocarbon bonds have been broken down into H-OH on Wednesday, a member of the CELL processor team member tracked down the relevant information and he writes:
The R in RTB is an internal 1 character identifier that denotes that the RTB block is a unit in the SPE. The TB in RTB stands for "Test Block". It contains the ABIST (Array Built In Self Test) engines for the Local Store and other arrays in the SPE, as well as other test related control functions for the SPE.
"
What do you think about this??
http://www.realworldtech.com/page.cfm?ArticleID=RWT021005084318&p=4
"The estimate given by IBM at ISSCC 2005 was that the DP FP computation in the SPE has an approximate 10:1 disadvantage in terms of throughput compared to SP FP computation. Given this estimate, the peak DP FP throughput of an 8 SPE CELL processor is approximately 25~30 GFlops when the DP FP capability of the PPE is also taken into consideration. In comparison, Earth Simulator, the machine that previously held the honor as the world’s fastest supercomputer, uses a variant of NEC’s SX-5 CPU (0.15um, 500 MHz) and achieves a rating of 8 GFlops per CPU. Clearly, the CELL processor contains enough compute power to present itself as a serious competitor not only in the multimedia-entertainment industry, but also in the scientific community that covets DP FP performance."
http://www.realworldtech.com/page.cfm?ArticleID=RWT021005084318&p=8
"After some discussion (and more wine), it was determined that the ATO unit is most likely the Atomic (memory) unit responsible for coherency observation/interaction with dataflow on the EIB. Then, after the injection of more liquid refreshments (CH3CH2OH), it was theorized that the RTB most likely stood for some sort of Register Translation Block whose precise functionality was unknown to those outside of the SPE. However, this theory would turn out to be incorrect.
Finally, after sufficient numbers of hydrocarbon bonds have been broken down into H-OH on Wednesday, a member of the CELL processor team member tracked down the relevant information and he writes:
The R in RTB is an internal 1 character identifier that denotes that the RTB block is a unit in the SPE. The TB in RTB stands for "Test Block". It contains the ABIST (Array Built In Self Test) engines for the Local Store and other arrays in the SPE, as well as other test related control functions for the SPE.
"
What do you think about this??
