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From: Pierre Valiron (Pierre.Valiron_at_[hidden])
Date: 2004-08-13 02:02:14


On Thu, 12 Aug 2004, William Boatin wrote:

> how do i go about checking for compatible integers and floats?
> how do i fix it if i dont have compatible integers and floats on the 64 and
> 32 bit machines? you mention that it is a compiler option... which i cant
> seem to find in the installation guide that comes with lam-mpi.

First you should decide which compiler to use for C and fortran on each
platform. The choice may be guided by the requirements of your parallel
applications (performance, portability, etc...).

Then have a look at the compiler guide for each compiler on each platform.

Usually relevant options looks like -i4 for default 32 bit integers (4
bytes) et -i8 for default 64 bit integers (8 bytes).

Then you should configure the LAM install to use these compilers with
these options. The LAM guide explains how to select a compiler and
options. The choice of compiler and options is obviously beyond LAM.

Best.
Pierre.

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