From: Yar Baily (msmabc@hotmail.com)
Date: Wed Oct 01 2003 - 15:34:32 EDT
One of my users is a professor who has Fortran code that he developed over the
years. Primarily he runs this code on HP-UX C3600 machines but recently he got
a new Dell laptop 2.5 GHz, Linux installed on it and Fortran compiler too. He
says that the performance of his 32 bit Linux laptop is comparable to 64 bit
HP-UX for sure but it out performs 10 times the SUN Blade 2000. It is very
disturbing for me to hear as these SUN machines are just 1-2 year old while
the HP are around 4-5 years old.
Now, he tells me that when he fires the job on PC or HP machines, it utilizes
the 100% of the processor power. While when he runs the same job on SUN, it
only utilizes 50% of the processor while a great number of HD I/O activity
takes place hence it take longer time to finish the job.
These SUN Blades have fiber channel hard disks that are supposed to be better
that SCSI or IDE, isn't it ? And in my view there should not be much of swap
I/O activity there anyways as these SUN Blades are equipped with 2GB RAM.
I would like expert opinions on this situation and any suggestions that would
allow me to tweak the performance of these SUN machines or identify any
problems. I have installed Solaris 8 a fresh with all patches and just the
Forte 7 Compiler Collection but no difference. I personally believe that these
machines are much more powerful than the other two.
Regards
Yar Baily
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