Re: any Cray users out there in netCDF-land?

[Remik Ziemlinski <Remik.Ziemlinski@xxxxxxxx>]

At GFDL, we're reviving FFIO for SGI's Origin and Altix systems (we no 
longer have a CRAY).  Speedups of 13x (read) and 9x (write) have been 
seen on the Origins by setting the NETCDF_FFIOSPEC environment variable 
to 'cache:256:2'.  Regression tests (on the Origins) are in progress and 
show no errors yet.  The bufa and mr FFIO layers doesn't seem to work, 
though.

The Altix port builds and runs, but is yet to be tested for stability 
and performance.

We've augmented ffio.c and ncio.c to use a new macro SGI_FFIO, since SGI 
offers a C interface to the 'assign' environment.  xdiff-ing these files 
 shows that not much changed vis-a-vis the netcdf-3.6.0-p1 originals.

ftp://ftp.gfdl.noaa.gov/pub/rsz/ncio.c
ftp://ftp.gfdl.noaa.gov/pub/rsz/ffio.c

Stay tuned for the remaining tests.

--
Remik Ziemlinski                        Raytheon Company
NOAA/Geophysical Fluid Dynamics Lab.    Remik.Ziemlinski at noaa d0t gov
P.O. Box 308                            1.609.452.6500 ext. 6977
Princeton, NJ 08542 USA                 1.609.987.5063 fax