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I understand that. I only suggest a way how to decrease this count
number. For example you have an array of 2.5 GB size.<br>
Now a little trick:<br>
MPI_Send(array, arraysize/sizeof(int), MPI_INT,......);<br>
Thus you'll send the entire array without data loss or integer overflow.<br>
<br>
Hisham Adel ßØèÕâ:
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style="font-family: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; font-size: inherit; line-height: inherit; font-size-adjust: inherit; font-stretch: inherit;"
valign="top">The problem is in the count number not in the data type.<br>
<br>
Thanks a lot<br>
<br>
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--- On <b>Thu, 10/2/08, The Source <i><a class="moz-txt-link-rfc2396E" href="mailto:thesourcehim@gmail.com"><thesourcehim@gmail.com></a></i></b>
wrote:<br>
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style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;">From:
The Source <a class="moz-txt-link-rfc2396E" href="mailto:thesourcehim@gmail.com"><thesourcehim@gmail.com></a><br>
Subject: Re: [mpich-discuss] MPICH2 & Large data<br>
To: <a class="moz-txt-link-abbreviated" href="mailto:mpich-discuss@mcs.anl.gov">mpich-discuss@mcs.anl.gov</a><br>
Date: Thursday, October 2, 2008, 3:08 PM<br>
<br>
<div id="yiv1934828495"> Send, using different MPI data
types. For example MPI_INT instead of
MPI_CHAR, so element number will be 4 time smaller. The other way is to
split data to several messages.<br>
<br>
Hisham Adel ßØèÕâ:
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Hi,<br>
<br>
I am trying to send large data (2.5GB) using MPICH2. When the other
node is going to receive the data it can not cause in MPI_RECV (void *
buffer, Int count, .......) the count number will be very large than
the integer range.<br>
<br>
how can I make it receive large data ?<br>
Is there any solution for this problem ?<br>
<br>
Thanks alot<br>
<br>
Regards,<br>
Hisham Adel<br>
<br>
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