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<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US">I work
for the Centre d'Expertise Hydrique du Québec (CEHQ,
http://www.cehq.gouv.qc.ca), which is an agency of the Québec's ministry of
environment (formely the Ministère du développement durable et des parcs du
gouvernement du Québec). Among various objectives, the CEHQ operates the
hydrometric network of the </SPAN><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US">province</SPAN><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US"> of
</SPAN><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US">Québec</SPAN><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US"> and
supports the management of public dams by producing hydrological
forecasts.</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US"> </SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US">Over
nearly ten years, our hydrological forecasts have been produced dayly at a 3h
timestep by integrating meteorological forecasts data of the canadian model GEM.
<SPAN style="mso-spacerun: yes"> </SPAN>To process the GEM input data, we
use the GRADS system</SPAN><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial; mso-ansi-language: EN-US"> </SPAN><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US">(Grid
Analysis and Display System (GrADS), version 1.8SL11. We run GRADS on a serial
computer, an it works perfectly well. However, recently we aquired a few
quadcores computers and found a way to make GRADS work in parallel for us. The
idea is simple, and consists to let GRADS 1 computes the temperature mean, while
GRADS 2 computes the precipitation in the same time. As a result, we save half
of the computing time every morning. This work almost fine, except that in
certains executions we have an error of initialisation of GRADS or GRADS
sometimes freezes. So we are unable to use this idea for
now.</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 8.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US"> </SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US">We
wonder if there is a version of GRADS that works in parallel, or are there some
limits to the use of GRADS that we should know, and that we could overpass with
some adjustments.</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 8.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US"> </SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US">We
thank you in advance for any technical assistance you may kindly provide to us,
or for your help by transmitting this message to a colleague that may better
answer to these questions.</SPAN></P>
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<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US">Best
Regards,</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US"> </SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13.5pt; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US">Pierre
Lacombe, computer analyst</SPAN></P></FONT></DIV></BODY></HTML>