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Re: [pooma-dev] Compile Time Problems and Pooma 2
From: |
Dave Nystrom |
Subject: |
Re: [pooma-dev] Compile Time Problems and Pooma 2 |
Date: |
Tue, 29 May 2001 12:43:22 -0600 (MDT) |
Jeffrey Oldham writes:
> On Mon, May 28, 2001 at 02:46:58PM -0600, Dave Nystrom wrote:
> > this last Friday when b18 was virtually idle except for my compiles. The
> > stunning result is that I could build either a debug or optimized version
> > of
> > the library faster on my 2 year old 366 MHz Pentium 2 laptop with 384
> > MBytes
> > of memory than I could on an idle b18 using 16 processors. I find this
> > result to be truly stunning. The majority of the compile time, at least
> > 90%,
> > on b18 was spent in the backend C compiler.
>
> I am not surprised that a Pentium is faster than b18. When building
> gcc, my sequential Linux/Pentium i686 computer runs faster than
> Nirvana using ten processors. Starting a new process under Irix seems
> to be very slow and also the processors are slower.
Oh well, I confess to still being stunned. When compiling the secure version
of our code which sits on top of Pooma 1, I've been able to beat the time
that I get using my 4 processor Linux box from VALinux which has 500 MHz
processors and 10000 rpm disks and 2 GBytes of ram. Of course, it was 16
processors versus 4 and b18 did not beat my quad by much.
> Thanks,
> Jeffrey D. Oldham
> address@hidden
>
--
Dave Nystrom email: address@hidden
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