[MPICH] MPI_GET_ADDRESS

[Kenneth Rempe]

Hi Bill,

The output from configure on both AIX and Linux is "checking size of 
void *... 4."
So, it likes there is a problem with the sign fortran integers.

Ken


William Gropp wrote:
> At 01:51 PM 4/21/2006, Kenneth Rempe wrote:
>> Bill,
>>
>> Okay, what am I looking for in the configure output. Is there a why 
>> to override what configure is setting?
>> Also, is this a problem because in C++ you can use an unsigned int 
>> for addresses up to 4GB but in fortran it is a signed integer
>> which only can go up to 2GB?
>
> The first thing to look for is the size of void *.  The line should 
> look like
>
> checking size of void *...8
>
> If the size if 4, then you have 32 bit pointers.  There may then be a 
> problem, as you suspect, with the signed integer in Fortran.
>
> Bill
>
>
>> Thanks
>>
>> Ken
>>
>> William Gropp wrote:
>>
>>> At 08:02 AM 4/21/2006, Kenneth Rempe wrote:
>>>
>>>> ...
>>>> On both the Linux and IBM the value of MPI_ADDRESS_KIND is set to a 
>>>> 4 byte integer.
>>>
>>>
>>> That's the problem.  If the sizeof a pointer is 8 bytes, then 
>>> MPI_ADDRESS_KIND should be an 8 byte integer. What is the output of 
>>> configure for MPICH2?  Note that MPICH2 must be configured with 
>>> compatible compiler options for systems that support multiple 
>>> datatype sizes (such as 32 and 64bit pointers).
>>>
>>> Bill
>>>
>>>
>>>> Linux   Red Hat Enterprise 3
>>>>           Lahey Fortran Compiler version 6.2c
>>>>           gcc version 3.2.3
>>>>
>>>> IBM    Aix 5.2
>>>>           xlf compiler version 8.1
>>>>           xlc compiler version 6.0
>>>>
>>>>
>>>> -- 
>>>> *** NOTE: soa.com will no longer be used after February 1, 2006, 
>>>> please change your address book ***
>>>>
>>>> Kenneth R. Rempe                * email: 
>>>> kenneth.rempe at studsvikscandpower.com
>>>> Studsvik Scandpower, Inc.       * 504 Shoup Avenue Suite #201     * 
>>>> voice:  208-522-4630
>>>> Idaho Falls, ID USA 83402-3502  * fax:    208-522-1187
>>>
>>>
>>> William Gropp
>>> http://www.mcs.anl.gov/~gropp
>>
>>
>>
>> -- 
>> *** NOTE: soa.com will no longer be used after February 1, 2006, 
>> please change your address book ***
>>
>> Kenneth R. Rempe                * email: 
>> kenneth.rempe at studsvikscandpower.com
>> Studsvik Scandpower, Inc.       * 504 Shoup Avenue Suite #201     * 
>> voice:  208-522-4630
>> Idaho Falls, ID USA 83402-3502  * fax:    208-522-1187
>
> William Gropp
> http://www.mcs.anl.gov/~gropp

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