LAM/MPI General User's Mailing List Archives

From: Brian Barrett (brbarret_at_[hidden])
Date: 2007-09-27 00:01:48

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• In reply to: Rohit Prakash: "LAM: error using complex numbers array"
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• Reply: Rohit Prakash: "Re: LAM: error using complex numbers array"

On Sep 26, 2007, at 5:15 AM, Rohit Prakash wrote:

> MPI_Send(input_to_p0,SIZE,MPI_2COMPLEX,
> 1,tag0,MPI_COMM_WORLD);
>

MPI_2COMPLEX is a special datatype used for MAXLOC and MINLOC
reductions with Fortran. There is no predefined C datatype to
describe a complex (since C doesn't have a native complex datatype).

The easiest way to handle this would be to use MPI_TYPE_VECTOR to
create a datatype that consists of two consecutive MPI_FLOAT datatypes.

Hope this helps,

Brian

• Next message: Davide Cesari: "Re: LAM: mpirun on dual cores Opterons 8214HE"
• Previous message: Ruini Xue: "LAM: Find an MPI Application"
• In reply to: Rohit Prakash: "LAM: error using complex numbers array"
• Next in thread: Rohit Prakash: "Re: LAM: error using complex numbers array"
• Reply: Rohit Prakash: "Re: LAM: error using complex numbers array"