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<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>In addition to </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Rémi</span></font><font size=2
face=Arial><span lang=EN-US style='font-size:10.0pt;font-family:Arial'>
question and Janne answer I ran the same project on 3 different systems; one
older athlon 1800+ with 512 mb ddr, an amd athlon 64 X2 dual core 3800+ with
1Gb ddr and on a newer core Duo system (ibm t60 notebook) T2400 with 1.5 Gb
ddr2. Unfortunately I do not have a pentium 4 system at hand. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>The trnsys project that was used for the test consists
of a large heating facility, non standard types, weather and dhw data readers,
type 56, various simulation summary types,… (but no external routines)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>Trnsys 15 was used with the successive solver method.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>processing time:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>amd Athlon XP 1800+ (1.53 GHz): 64.23 sec.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>amd Athlon X2 3800+ (1 GHz): 57.64 sec. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>amd Athlon X2 3800+ (2 GHz): 29.38 sec.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>intel Core Duo T2400 (1.83GHz): 33.67 sec.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>Even at 1 GHz the newer athon (A64) architecture is
faster than the previous generation athlon (XP) at 1.53 GHz. The second core is
not used during trnsys simulations !!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>Ram usage stays well below 20 mb on each run.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>My guess (based on various processor architectures benchmarks
I’ve seen on the net) is that later generation Pentium 4’s (>3GHz)
are comparable to the newer atlhon 64 generation at 2 GHz in non multiple
threading applications (although at a much higher energy consumption!). Newer
intel core duo and core 2 duo systems will be quicker than comparable athlon 64
systems (at the same clock speed) and will require a lot less power under load
than a Pentium 4 system (less heat -> less noise)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>The benefit of dual core here is not the decrease in
calculation time but in the usability of the system (when a trnsys calculation
is running I can still use other applications like matlab or excel without slowing
down the trnsys simulation)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>raf<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
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