[mpich-discuss] libmpich.a "No such file or directory"

[Si Hammond]

Can you try...

mpicc -o main.o -c main.c
mpicc -o hello main.o

You should see the main.o in the directory, if no errors on the screen then it sounds like its working fine.


S.

On 15 Aug 2010, at 16:21, sasha lambert wrote:

> I tried compiling using mpicc, and nothing seems to happen.
> The prompt just reappears and no executable file has been made.
> 
> Sasha
> 
> On Sun, Aug 15, 2010 at 11:12 AM, Si Hammond <simon.hammond at gmail.com> wrote:
> Have you tried compiling with mpicc?
> 
> mpicc -o hello main.c 
> 
> This sets up the linking etc for you.
> 
> 
> 
> S.
> 
> 
> On 15 Aug 2010, at 16:02, sasha lambert wrote:
> 
>> I'm fairly new to unix and mpich, so please bear with me.
>> 
>> I've tried to compile a simple "hello" program below:
>> 
>> /*The Parallel Hello World Program*/
>> #include <stdio.h>
>> #include <mpi.h>
>> 
>> main(int argc, char **argv)
>> {
>> 	int node;
>> 	MPI_Init(&argc,&argv);
>> 	MPI_Comm_rank(MPI_COMM_WORLD, &node);
>> 	
>> 	printf("Hello World from Node %d\n",node);
>> 	
>> 	MPI_Finalize();
>> }
>> 
>> Here is the shell response:
>> 
>> $ gcc main.c -o hello
>> Undefined symbols:
>>   "_MPI_Comm_rank", referenced from:
>>       _main in ccWLoMyo.o
>>   "_MPI_Finalize", referenced from:
>>       _main in ccWLoMyo.o
>>   "_MPI_Init", referenced from:
>>       _main in ccWLoMyo.o
>> ld: symbol(s) not found
>> collect2: ld returned 1 exit status
>> 
>> I tried searching for "MPI_init" in libmpich.a, thinking it might have to do with the added underscore in " _MPI_Init".
>> Shell response:
>> 
>> $ nm libmpich.a | grep mpi_init
>> nm: can't open file: libmpich.a (No such file or directory)
>> 
>> I've added usr/local/lib to the PATH, but still nothing. Any suggestions?
>> 
>> Thanks,
>> Sasha
>> _______________________________________________
>> mpich-discuss mailing list
>> mpich-discuss at mcs.anl.gov
>> https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss
> 
> 
> ---------------------------------------------------------------------------------------
> Si Hammond
> 
> Research Fellow & Knowledge Transfer Associate
> Performance Computing & Visualisation Group
> Department of Computer Science
> University of Warwick, CV4 7AL, UK
> http://go.warwick.ac.uk/hpsg
> ----------------------------------------------------------------------------------------
> 
> 
> 
> 
> 
> _______________________________________________
> mpich-discuss mailing list
> mpich-discuss at mcs.anl.gov
> https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss
> 
> 
> _______________________________________________
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> https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss


---------------------------------------------------------------------------------------
Si Hammond

Research Fellow & Knowledge Transfer Associate
Performance Computing & Visualisation Group
Department of Computer Science
University of Warwick, CV4 7AL, UK
http://go.warwick.ac.uk/hpsg
----------------------------------------------------------------------------------------




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