Jeff Squyres wrote:
> On Thu, 17 Jul 2003, Matthew Bettencourt wrote:
>
>
>>>Generally, this error indicates that configure was not able to compile/run
>>>a simple fortran program. Can you verify that your fortran compiler
>>>works?
>>
>>Yes, f77 code works fine with this. Even the lam-6.x compiles just fine
>>as well. I am not sure how much the configur escript has changed since
>>then, I did notice more options.
>
>
> Send the output of configure and your config.log file (please compress).
Ugh, it turns out that it was a misconfig on our system and it is not
working (well, it is going beyond that point) where one had to
explicitly set /usr/lib in the LIBPATH sometimes. I can't find someone
who knows when you need to do this but ... Ugh...
Thanks for you help
>
>
>>If you have any suggestions of things that I may wish to set that would
>>be great to get some more performance out of this thing.
>
>
> Have a look at the User's Guide and the notes on the TCP RPI; you might
> want to bump up the small message size. This won't improve the latency,
> but it may improve your overall message passing performance if you pass
> sizeable messages around.
tyically, messages are small, on the order of 1k typical halo exchange
so it is latency driven, not BW.
I will try playing with that since I have a test case
M
>
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