Fractal benchmark

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jaezeen
Posts: 7
Joined: Tue Dec 15, 2009 8:52 pm

Re: Fractal benchmark

Unread postby jaezeen » Tue Dec 15, 2009 10:45 pm

Hey, Must say this is a great site and resource. I'm new to the world of Irix. My first play toy is a 2100 with 8 350 cpus. I've been banging my head trying to figure out why this script will not run. All files have been unpacked into the same directory and have full permissions. However, upon execution it keeps coming back with frects0088.txt cannot open. And a few lines saying not found but I'm not sure what that is in ref to. I can open the .txt in an editor so it's not corrupt and I've replaced all the files several times. It's probably one of those silly simple things I'm not aware of yet...Please help...
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Martin Steen
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Location: Braunschweig (Germany)
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Re: Fractal benchmark

Unread postby Martin Steen » Wed Dec 16, 2009 2:01 am

jaezeen wrote:Hey, Must say this is a great site and resource. I'm new to the world of Irix. My first play toy is a 2100 with 8 350 cpus. I've been banging my head trying to figure out why this script will not run. All files have been unpacked into the same directory and have full permissions. However, upon execution it keeps coming back with frects0088.txt cannot open. And a few lines saying not found but I'm not sure what that is in ref to. I can open the .txt in an editor so it's not corrupt and I've replaced all the files several times. It's probably one of those silly simple things I'm not aware of yet...Please help...


Welcome to the forum - you start with a "big iron"!

What happens if you just type ./run1.sh
(without the leading "sh"?)

Greetings,
Martin

jaezeen
Posts: 7
Joined: Tue Dec 15, 2009 8:52 pm

Re: Fractal benchmark

Unread postby jaezeen » Thu Dec 17, 2009 1:57 am

./run1.sh is what I started with but that returned me a command not found. However, success! Since I'm not that practiced at console I thought it would be easy to unpack the tar file on a windows box, I then burned the files to cd and dumped on the Irix box. Something must have gotten lost that way. I burned the untarred file onto disk and and with a little reading in the man pages unpacked on the SGI and then everything worked. However, it seems to be only using primarily one cpu. The first run was on 4 and then the second on 6. So the times where pretty slow? Thanks.
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jaezeen
Posts: 7
Joined: Tue Dec 15, 2009 8:52 pm

Re: Fractal benchmark

Unread postby jaezeen » Thu Dec 17, 2009 2:21 am

Ok, I spoke to soon. I get full activity on 2 cpus and 50% on two others starting at Run2 render 2. It's still running and I'll play around with changing the threads and make my own compile with mipspro when I get a chance. This is an interesting program to get started learning with. Thanks, I'll be digging into alot of the other stuff here as I get time :)

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Martin Steen
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Joined: Tue Sep 25, 2007 2:00 am
Location: Braunschweig (Germany)
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Re: Fractal benchmark

Unread postby Martin Steen » Thu Dec 17, 2009 2:38 am

jaezeen wrote:./run1.sh is what I started with but that returned me a command not found. However, success! Since I'm not that practiced at console I thought it would be easy to unpack the tar file on a windows box, I then burned the files to cd and dumped on the Irix box. Something must have gotten lost that way. I burned the untarred file onto disk and and with a little reading in the man pages unpacked on the SGI and then everything worked. However, it seems to be only using primarily one cpu. The first run was on 4 and then the second on 6. So the times where pretty slow? Thanks.


Some programs (e.g. FTP-clients) change the line-endings of textfiles. Looks like this happend
while unpacking.
Windows uses a different encoding for lineends (0x0D 0x0A) than Unix (0x0A).
Most Unix-shells don't like the Windows lineends. You can tell if a file has
Windows lineendings by opening it in the vi-texteditor. The text is full
of "^M"-characters in Windows-textfiles.
I have a tittle tool ("unixlf") to convert windows-textfiles to unix-textfiles.

About the speed: try to run "run2.sh". It seems that Irix doesn't uses all CPUs when an
application is running too short. Unfortunatelly, I don't have a multi-CPU SGI. The
program was developed with a Phenom-Quadcore and Ubuntu/64. With Linux, all
CPU-cores running full speed from the start.

Greetings,
Martin

jaezeen
Posts: 7
Joined: Tue Dec 15, 2009 8:52 pm

Re: Fractal benchmark

Unread postby jaezeen » Thu Dec 17, 2009 1:44 pm

Thanks. I figured something like that happen and it's good to know exactly what for future reference. Especially, since there will be some more back and forth transfer from platforms in the future for me as I'll want to write on my laptop. The fractal program has special interest for me since I work in a closely allied field of wave boundary theory and so wish to learn to write similar programs. I'd be curious to know the function and parameters for the three fractals in the program.

Origin 2100 8Cpus @350Mhz 16Gb ram
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