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Topic: Parallel Toolbox
Replies: 2   Last Post: Feb 3, 2013 11:29 AM

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Edwardo

Posts: 7
Registered: 11/24/12
Re: Parallel Toolbox
Posted: Feb 3, 2013 11:29 AM
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Edric M Ellis <eellis@mathworks.com> wrote in message <ytwehi2znzx.fsf@uk-eellis0l.dhcp.mathworks.com>...
> "Edwardo " <edwardo.rivera@upr.edu> writes:
>

> > I will use the toolbox with spmd: message passing. I have some
> > experience with MPI in C. I search some doc abour the labSend and
> > labReceive functions.
> >
> > My question are: Did I need to specify the exact quantity of what I want to
> > receive as in C? (looks line not)

>
> You do not. You can send any MATLAB data types, and the receiving side
> automatically gets the right size and type of data.
>

> > To receive information, did the variable
> > "data" be the same size as what is being received?
> > ----------------------------------------------
> > data = labReceive(source,tag)
> > -----------------------------------------------

>
> No, you do not need to pre-allocate 'data' - any previous value is
> ignored and overwritten.
>

> > If I need to read a lot of files that are in my home directory on a cluster and
> > the other matlab workers are in other computers, (cores) (because is a
> > cluster...) the workers can have access to a file that is in my home directory??
> > (the answer mut be no right??)

>
> That depends on how your cluster is set up. Some are set up so that all
> worker nodes can see a common filesystem.
>
> Cheers,
>
> Edric.


Hi Edric,
Thaks for the info! So, Let's say that the other computers can see my home directory in the cluster. That means that they can read a file, each one? that will be awesome for me.



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