| IDL and MPI [message #15364] |
Mon, 10 May 1999 00:00  |
Karl Young
Messages: 31
Registered: April 1996
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Member |
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I've been making various attempts at "parallelizing" IDL (maybe an
oxymoron forevermore !) with no luck. E.g. I tried using a callable IDL
program as the interface to a multiprocessor program (written with MPI
library calls) on a Sun HPC 3500 system. The program compiled but didn't
run because of an apparent incompatibility between the multiprocessor
environment and the shareable library containing the callable IDL
functions. Since a lot of the people that participate in this group are
a lot more clever than I am I thought I'd ask the general question: Has
anybody been able to use IDL in conjunction with MPI (or PVM or any
other parallel library), and if so how did they do it ? Thanks for any
suggestions (and I'll be happy to summarize any replys)
-- KY
Karl Young
UCSF,VA Medical Center
MRS Unit (114M)
4150 Clement Street
San Francisco, CA 94121
Email: kyoung@itsa.ucsf.edu
Phone: (415) 750-2158 lab
(415) 750-9463 home
FAX: (415) 668-2864
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| Re: IDL and MPI [message #15399 is a reply to message #15364] |
Fri, 14 May 1999 00:00  |
Nathaniel Livesey
Messages: 5
Registered: April 1996
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Junior Member |
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Ah a like mind!
I have written a set of IDL wrappers for PVM3. I considered posting to
this group and the pvm group to say I had done so, but decided people would
just think I must be mad, and should be using Fortran or whatever (which
I know I should, but I guess I'm lazy and too used to IDL.)
As well as wrapping the PVM calls, I also wrote a higher level
`SendIDLVariable' routine which decomposes any IDL variable (structures,
nested structures etc.) and sends it to another IDL process by PVM. If
people are interested I could knock these routines into shape and send them
out.
I've not looked into MPI, though I may do so in the future.
Feel free to contact me if you want these.
Nathaniel
------------------------------------------------------------ -------
Nathaniel Livesey - Microwave Limb Sounder group.
Postal address: Mail Stop 183-701, Jet Propulsion Laboratory,
4800 Oak Grove Drive, Pasadena, California 91109.
Telephone: [+1] (818) 354 4214 (+voice mail),
fax: [+1] (818) 393 5065
Email: livesey@mls.jpl.nasa.gov
------------------------------------------------------------ -------
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| Re: IDL and MPI [message #15432 is a reply to message #15364] |
Wed, 19 May 1999 00:00 |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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Larry Busse (ljb@ljbdev.com) writes:
> BTW...I guess your only as old as you feel.
Oh, please, Larry. Don't be telling me that. :-(
Cheers,
David
P.S. Let's just say that with the nice weather I've been
playing more tennis and I'm *feeling* older than ever.
On the other hand, my young pup of a son is having a hell
of a time with my serve. :-)
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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| Re: IDL and MPI [message #15434 is a reply to message #15364] |
Wed, 19 May 1999 00:00 |
Larry Busse
Messages: 7
Registered: February 1999
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Junior Member |
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David Fanning wrote:
>
> Liam Gumley (Liam.Gumley@ssec.wisc.edu) writes:
>
>>> As well as wrapping the PVM calls, I also wrote a higher level
>>> `SendIDLVariable' routine which decomposes any IDL variable (structures,
>>> nested structures etc.) and sends it to another IDL process by PVM. If
>>> people are interested I could knock these routines into shape and send them
>>> out.
>>
>> I for one would like to encourage you to make these routines available.
>
> Uh, could someone tell the oldsters in the group what PVM is!?
>
> :-(
>
> David
> --
> David Fanning, Ph.D.
> Fanning Software Consulting
> Phone: 970-221-0438 E-Mail: davidf@dfanning.com
> Coyote's Guide to IDL Programming: http://www.dfanning.com/
> Toll-Free IDL Book Orders: 1-888-461-0155
David,
PVM stands for Parallel Virtual Machine. It's a way to use a bunch of
networked computers to work on your problem in parallel. Check out
http://www.epm.ornl.gov/pvm/ for the official doctrine.
BTW...I guess your only as old as you feel.
--
Larry Busse Phone: (606)344-9433
L.J.B. Development Fax: (606)341-8486
3384 Madison Pike mailto:larry@ljbdev.com
Fort Wright, KY 41017 http://www.ljbdev.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~
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| Re: IDL and MPI [message #15469 is a reply to message #15364] |
Mon, 17 May 1999 00:00 |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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Liam Gumley (Liam.Gumley@ssec.wisc.edu) writes:
>> As well as wrapping the PVM calls, I also wrote a higher level
>> `SendIDLVariable' routine which decomposes any IDL variable (structures,
>> nested structures etc.) and sends it to another IDL process by PVM. If
>> people are interested I could knock these routines into shape and send them
>> out.
>
> I for one would like to encourage you to make these routines available.
Uh, could someone tell the oldsters in the group what PVM is!?
:-(
David
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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| Re: IDL and MPI [message #15472 is a reply to message #15364] |
Mon, 17 May 1999 00:00 |
Liam Gumley
Messages: 473
Registered: November 1994
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Senior Member |
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Nathaniel Livesey wrote:
> I have written a set of IDL wrappers for PVM3. I considered posting to
> this group and the pvm group to say I had done so, but decided people would
> just think I must be mad, and should be using Fortran or whatever (which
> I know I should, but I guess I'm lazy and too used to IDL.)
>
> As well as wrapping the PVM calls, I also wrote a higher level
> `SendIDLVariable' routine which decomposes any IDL variable (structures,
> nested structures etc.) and sends it to another IDL process by PVM. If
> people are interested I could knock these routines into shape and send them
> out.
I for one would like to encourage you to make these routines available.
Cheers,
Liam.
---
Liam E. Gumley
Space Science and Engineering Center, UW-Madison
http://cimss.ssec.wisc.edu/~gumley
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