| IDL 5.4 and MacOS 9.1 [message #25291] |
Wed, 30 May 2001 00:38  |
![Dominik[1] is currently offline](theme/default/images/xoffline.png.pagespeed.ic.XRkd1fkXye.png "Dominik[1] is currently offline")
Dominik[1]
Messages: 46
Registered: April 2001
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Does somebody has experience with IDL 5.4 on a G3 with MacOS 9.1?
On our system it is starting very slow, so we have to wait for more than one
minute after loading.
Dom
--
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Dominik Paul
Uniklinik Freiburg
Abt. Nuklearmedizin/PET
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| Re: IDL 5.4 and MacOS 9.1 [message #25327 is a reply to message #25291] |
Thu, 07 June 2001 08:50  |
Pavel A. Romashkin
Messages: 531
Registered: November 2000
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Senior Member |
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Hi Dominik,
> Maybe you are right. The SCSI drive is a external (5 or 10 MB per sec ?) in
> an older G3 (but not an upgraded) with an SCSI port still directly on the
> board. There is no network connection at all. Hope you know which one I
> mean, this beige G3 with 233MHz. There is no network connection at all. On
> the weekend I will format the external drive and/or reinstal my system.
I know the machine you are talking about, we have one here. My colleague
uses it as a shelf for a G4 Titanium laptop now, after the upgrades.
Even the internal data bus on that one is slow compared to G4s. I would
guess that revamping the external drive is not going to improve it a
lot, and suggest that you use the internal drive. Although on my pre-G3
PowerComputing clone I have at home IDL started still faster than on
yours, using a 20 Mb/s SCSI bus. So I'd blame a slow, fragmented drive.
> So, another thing we observed is, that a big calculation a P3 with 900Mhz
> and 512MB took 42 secs, while on a Mac the same calculating only took 22
> secs. Does somebody have experience in performance comparison Mac<->PC ???
RSI said that Macs are the fastest to run IDL. I assume that pertains to
G4s, where IDL takes advantage of the Motorola's chip. My guess here
would be that G3 chip is a little more efficient than a P3 (while more
expensive), and the system bus is faster. Does P3 have a 33 MHz bus? You
can get some idea if you run IDL's timetests on both and look at which
tests are slower on a Pentium. I'd bet those would be disk access tests.
I want to try IDL on my home PC w/Duron 750, but need toget a CD from RSI.
Cheers,
Pavel
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| Re: IDL 5.4 and MacOS 9.1 [message #25331 is a reply to message #25291] |
Thu, 07 June 2001 01:13 |
Dominik[1]
Messages: 46
Registered: April 2001
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Member |
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Maybe you are right. The SCSI drive is a external (5 or 10 MB per sec ?) in
an older G3 (but not an upgraded) with an SCSI port still directly on the
board. There is no network connection at all. Hope you know which one I
mean, this beige G3 with 233MHz. There is no network connection at all. On
the weekend I will format the external drive and/or reinstal my system.
On the blue/white G3 here in my Office, IDL is running very fast. Here the
G3 has the same Operating system, (less memory), the same IDL version with
the same Demo license.
So, another thing we observed is, that a big calculation a P3 with 900Mhz
and 512MB took 42 secs, while on a Mac the same calculating only took 22
secs. Does somebody have experience in performance comparison Mac<->PC ???
Systems:
blue/white G3 with 400Mhz, 256 MB, MacOS 9.1, internal IBM SCSI drive with
an Adaptec SCSI Controller
Siemens PC with P3 900Mhz, 512 MB, Windows 2000, normal internal Harddrive
(IDE)
Dom
"Pavel A. Romashkin" <pavel.romashkin@noaa.gov> schrieb im Newsbeitrag
news:3B1E65E6.A635183F@noaa.gov...
> Hi David,
>
>> Pavel seems to have given up on us, much to
>> my personal disappointment. He would know about this. :-(
>
> How could you even think so? I was away on a trip for a month! I am back
> with all silly advice I have to offer :-)
>
> I agree that this is this individual computer's fault. Either it is an
> upgraded Mac with a G3 chip that has an old SCSI drive that's slow, or
> the drive is badly fragmented. Even an Apple G3 that comes with an
> EIDE33 drive bus should do faster than this. A newer G4s come with at
> least an EIDE66, or maybe even ATA100 drives. It takes about a second
> toget 5.4 running on mine.
>
> Cheers,
> Pavel
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| Re: IDL 5.4 and MacOS 9.1 [message #25422 is a reply to message #25325] |
Thu, 07 June 2001 09:40 |
Pavel A. Romashkin
Messages: 531
Registered: November 2000
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Senior Member |
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> I think they were referring to the as-yet-unreleased Altivec-tuned
> version of IDL they demoed with Jobs at MacWorld last year. I guess
> we've yet to see how fast IDL can be on the G4.
Velocity Engine Support Enabled
IDL Version 5.4 (MacOS PowerMac). (c) 2000, Research Systems, Inc.
Welcome to IDL for Macintosh.
IDL technical support can be reached at:
Phone: (303) 786-9900
Fax: (303) 786-9909
E-mail: support@ResearchSystems.com
This is the first thing you see when you start up IDL on a G4.
Cheers,
Pavel
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