Experimental Physics and
Industrial Control System

Nick,

 > 
 > Under VxWorks I typically get a little over 30MByte/s average throughput
 > in a test in which a largish message (few Mbytes) gets ping-ponged between

Thanks for the test info. For MEGACAM (32 2Kx4K thinned CCDs =
512MBytes/image) we are considering _not_ having the image data travel
on the VMEbus - epecially if we can't sustain at least a 40MByte/sec
transfer.

Current thoughts are 5 CPUs in the crate, 1 for control/status with a
Control Lan (= EPICS CA ?) interface, 4 with both Fiber Channel and
Data Lan (= PVM ?) interfaces...


Peregrine

-------------------------------------------------------------------------------
Peregrine M. McGehee			http://www.cfht.hawaii.edu/~mcgehee
Telescope Control Systems Group 	Canada-France-Hawaii Telescope
(808) 885-3178				P.O. Box 1597, Kamuela, Hawaii 96743	

Navigate by Date:

Prev: Re: tcl/tk , tcl-dp and blt which and where? Rozelle Wright

Next: Booting lots of diskless VxWorks clients Brett M. Kettering

Index: 1994  1995  1996  <1997>  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 

Navigate by Thread:

Prev: Re: PowerPC/VME64 Nick Dillon

Next: Booting lots of diskless VxWorks clients Brett M. Kettering

Index: 1994  1995  1996  <1997>  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024