Is it possible you are compiling with -p?
Abe
Rocky Rhodes wrote:
When I run bin/manta in the trunk directory, someone creates a
"gmon.out" file. Whoever is doing this must be calling mcount, but I
don't see any obvious calls in the code to anything like gmon or gprof
or similar...
Hansong is checking out the trunk and will see if my results are
reproducible or just somehow related to the history of my tree.
Rocky
-----Original Message-----
From: Abe Stephens [mailto:abe@sci.utah.edu]
Sent: Monday, December 12, 2005 4:55 PM
To: Rocky Rhodes
Subject: Re: [MANTA] trunk performance on Altix
Maybe decrease the sampling frequency? I'm not sure why this function
would show up in one build and not the other. Is it labeled as being
in
kernel or user space?changes
Abe
Rocky Rhodes wrote:
Histx shows over 50% of the trunk time being spent in mcount. Google
shows this to have something to do with profiling. Does this ring a
bell?
Rocky
-----Original Message-----branch
From: Abe Stephens [mailto:abe@sci.utah.edu]
Sent: Monday, December 12, 2005 4:25 PM
To: Rocky Rhodes
Cc: Steven G. Parker
Subject: Re: [MANTA] trunk performance on Altix
Wow, we'll certainlly have to look into this-- I will try to run a
profile tonight--
Abe
Rocky Rhodes wrote:
For bin/manta -np4 with cockpit.v3c1 and cockpit-path1, itanium
gives me 3.75 fps and the trunk code gives me 1.34 fps.
-----Original Message-----
From: Abe Stephens [mailto:abe@sci.utah.edu]
Sent: Monday, December 12, 2005 4:01 PM
To: Rocky Rhodes
Subject: Re: [MANTA] trunk performance on Altix
There were quite a few changes merged across and many style
comparison.with
made
during the merge so this type of thing isn't unexpected.
I am working on merging the last itanium2 changes over (most deal
texturing) and then I'll do a comprehensive performance
fpsHave you tried any of the kdtree scenes?with
Abe
Rocky Rhodes wrote:
I have updated from the trunk and compiled on my Altix. Bin/manta
shows me the nice shiny board and checkerboard ground plane, but
performance is not what it is in the itanium branch. On a machine
branch1.6 GHz processors, "bin/manta" gives me 1.4 fps on the itanium
and 0.99 fps on the main trunk. "bin/manta -np 4" gives me 5.5
-g).on
the itanium branch and 1.6 fps on the main trunk.
I think both are being compiled with "Release" flags (-O3 -IPO
Rocky
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