fnddr@acad3.fai.alaska.edu (04/10/90)
We are looking at a setup which essentially takes a 16-bit sample stream and performs ffts on it. One proposed solution would have a Sun-4/330 with a Mercury array processor and adc on its VMEbus. The Mercury specs claim it can do a 1024-point FFT in 2.7ms. However, some Mercury competitors say that, when the bus i/o overhead and the SunOS i/o overhead are figured in, the average time required to do the FFT on a data stream is much much longer. In particular Sky is pushing their RISC+AP board as solution to this problem. So, if anybody is running such a system, I'd like to hear about the actual performance levels. Any comments on the reliability of the APs (MTBF) would also be welcome. Thanks, Don Rice Internet: fnddr@acad3.fai.alaska.edu Geophysical Institute E-mail: fnddr@alaska.bitnet University of Alaska Phone: (907) 474-7569 Fairbanks, AK 99775 Loran: 64.86N 212.16E