If you use the C standard library function fopen, your
file IO has nothing to do with MPI. You'd better check the file sharing/mapping
support of the underlying OS of your MPI nodes. Do you want to check with
MPI-IO?
Sent: Monday, July 12, 2010 9:01 PM
Subject: Re: [Boost-users] boost C++ load data from
file
thanks
I am working on a multi-computer MPI cluster system.
If I put some data
files in /home/mypath/folder, is it possible that all non-head nodes can access
the files in the folder ?
I need to load some data to some nodes, if all nodes can access the data, I
do not need to load them to each node one by one.
If multiple nodes access the same file to get data, is there conflict
?
For example,
fopen(myFile) by node 1, at the same time fopen(myFile) by node
2.
Is it allowed to do that on MPI cluster without conflict ?
thansk
Jinxu Ding
July 12 2010
> Date: Tue, 13 Jul 2010 02:35:53 +0200
> From:
theom3ga@gmail.com
> To: boost-users@lists.boost.org
> Subject: Re:
[Boost-users] boost C++ load data from file
>
> Hi Jack,
>
> > (1) how to load the data from 24 x 28 files
by boost C++?
> > It is boring to type file's name one by one
in program.
> > Is there an alternative to load the data by indexing
the file names ?
>
> You can use boost.filesystem to iterate over
all the files contained
> in a folder.
>
> > (2) how to
index the item of the datastructure by boost C++ ?
>
> I don't
really get how the file structure is supposed to be. Could you
> clarify
it, maybe including a small example and/or file and folder
>
hierachy?
>
> > Hotmail is redefining busy with tools for the
New Busy.
>
> I don't think hotmail is redefining anything. Well,
yes, mediocrity.
> Get yourself a real mail account, like GMail.
>
> --
> José Tomás Tocino García
>
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